TY  - JOUR
AU  - Kutyła, Dawid
AU  - Krstajić Pajić, Mila N.
AU  - Lačnjevac, Uroš Č.
AU  - Marzec, Mateusz M.
AU  - Elezović, Nevenka R.
AU  - Żabiński, Piotr
PY  - 2024-02
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6992
AB  - This study investigates the structure, electrochemical behavior and hydrogen evolution reaction (HER) performance of electrodeposited Ru–Co alloy coatings. The alloys were prepared from a 0.75 M Co2+ + 0.025 M Ru3+ solution at various potentials ranging from −0.5 to −1.2 V vs. SCE. Results reveal that the Ru and Co deposition processes are interdependent. The deposition of nobler Ru from the mixed metal solution reaches pure diffusion control already at −0.7 V compared to −1.0 V from a single Ru bath. On the other hand, Co deposition is significantly facilitated in the presence of Ru in the solution. Consequently, as the deposition potential changes from −0.6 to −1.0 V, Ru–Co solid solution coatings characterized by a distinct globular morphology are formed, with their Co content increasing from 22.1/7.4 to 70.2/86.1 wt% for the Cu/Ti2AlC MAX phase substrate applied. The alloy catalysts are found to show much better HER activity and stability in alkaline than in acidic solutions. The best Ru–Co@Ti2AlC sample, electrodeposited at −0.6 V, requires an overpotential of only −95 mV to deliver a current density of −100 mA cm−2 in 1 M KOH, thus outperforming most Ru–Co-based HER electrocatalysts reported to date.
PB  - Elsevier Ltd.
T2  - International Journal of Hydrogen Energy
T1  - Ru–Co alloy coatings electrodeposited on a MAX phase substrate as efficient catalysts for the hydrogen evolution reaction
EP  - 40
SP  - 28
VL  - 56
DO  - 10.1016/j.ijhydene.2023.11.296
ER  - 

@article{
author = "Kutyła, Dawid and Krstajić Pajić, Mila N. and Lačnjevac, Uroš Č. and Marzec, Mateusz M. and Elezović, Nevenka R. and Żabiński, Piotr",
year = "2024-02",
abstract = "This study investigates the structure, electrochemical behavior and hydrogen evolution reaction (HER) performance of electrodeposited Ru–Co alloy coatings. The alloys were prepared from a 0.75 M Co2+ + 0.025 M Ru3+ solution at various potentials ranging from −0.5 to −1.2 V vs. SCE. Results reveal that the Ru and Co deposition processes are interdependent. The deposition of nobler Ru from the mixed metal solution reaches pure diffusion control already at −0.7 V compared to −1.0 V from a single Ru bath. On the other hand, Co deposition is significantly facilitated in the presence of Ru in the solution. Consequently, as the deposition potential changes from −0.6 to −1.0 V, Ru–Co solid solution coatings characterized by a distinct globular morphology are formed, with their Co content increasing from 22.1/7.4 to 70.2/86.1 wt% for the Cu/Ti2AlC MAX phase substrate applied. The alloy catalysts are found to show much better HER activity and stability in alkaline than in acidic solutions. The best Ru–Co@Ti2AlC sample, electrodeposited at −0.6 V, requires an overpotential of only −95 mV to deliver a current density of −100 mA cm−2 in 1 M KOH, thus outperforming most Ru–Co-based HER electrocatalysts reported to date.",
publisher = "Elsevier Ltd.",
journal = "International Journal of Hydrogen Energy",
title = "Ru–Co alloy coatings electrodeposited on a MAX phase substrate as efficient catalysts for the hydrogen evolution reaction",
pages = "40-28",
volume = "56",
doi = "10.1016/j.ijhydene.2023.11.296"
}

Kutyła, D., Krstajić Pajić, M. N., Lačnjevac, U. Č., Marzec, M. M., Elezović, N. R.,& Żabiński, P.. (2024-02). Ru–Co alloy coatings electrodeposited on a MAX phase substrate as efficient catalysts for the hydrogen evolution reaction. in International Journal of Hydrogen Energy
Elsevier Ltd.., 56, 28-40.
https://doi.org/10.1016/j.ijhydene.2023.11.296

Kutyła D, Krstajić Pajić MN, Lačnjevac UČ, Marzec MM, Elezović NR, Żabiński P. Ru–Co alloy coatings electrodeposited on a MAX phase substrate as efficient catalysts for the hydrogen evolution reaction. in International Journal of Hydrogen Energy. 2024;56:28-40.
doi:10.1016/j.ijhydene.2023.11.296 .

Kutyła, Dawid, Krstajić Pajić, Mila N., Lačnjevac, Uroš Č., Marzec, Mateusz M., Elezović, Nevenka R., Żabiński, Piotr, "Ru–Co alloy coatings electrodeposited on a MAX phase substrate as efficient catalysts for the hydrogen evolution reaction" in International Journal of Hydrogen Energy, 56 (2024-02):28-40,
https://doi.org/10.1016/j.ijhydene.2023.11.296 . .

TY  - JOUR
AU  - Petričević, Aleksandar
AU  - Jović, Vladimir D.
AU  - Krstajić Pajić, Mila N.
AU  - Zabinski, Piotr
AU  - Elezović, Nevenka R.
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5353
AB  - Catalytic activity towards the oxygen reduction reaction (ORR) in 0.5 M H2SO4 was investigated at sub-monolayers and ultra-thin layers (corresponding to 10, 30 and 100 monolayers, (MLs)) of Pt electrochemically deposited on (Nb-Ti)2AlC substrate. Electrochemical deposition of Pt layers on (Nb-Ti)2AlC substrate was achieved from the solution containing 3 mM K2PtCl4 + 0.5 M NaCl (pH 4) under the conditions of convective diffusion (RPM = 400) using linear sweep voltammetry (LSV) at a sweep rate of 2 mV s-1, by determining limiting potential for deposition of each Pt sample from the QPt vs. E curves. The Pt samples were characterized X-ray photoelectron spectroscopy (XPS). XPS analysis showed that practically the whole surface of (Nb-Ti)2AlC substrate is covered with homogeneous layer of Pt, while Pt ion reduction was complete to metallic form – Pt(0) valence state. Then oxygen reduction was studied at rotating disc electrode by cyclic voltammetry and linear sweep voltammetry. Two different Tafel slopes were observed, one close to 60 mV dec-1 in low current densities region and second one ~ 120 mV dec-1 in high current densities region. This novel catalyst exhibited higher activity in comparison to carbon supported one, in terms of mass activity – kinetic current density normalized to Pt loading.
AB  - Ispitivana je reakcija redukcije kiseonika na tankim slojevima platine u 0.5 mol dm-3 H2SO4. Tanki
slojevi platine – čija količina naelektrisanja odgovara 10, 30 i 100 teorijskih monoslojeva Pt su
istaloženi na nosaču od (Nb-Ti)2AlC. Za elektrohemijsko taloženje je korišćen rastvor 3 mM
K2PtCl4 + 0.5 M NaCl pH = 4, u uslovima konvektivne difuzije (RPM = 400) primenom metode
linearne skenirajuće voltametrije (LSV) pri brzini promene potencijala od 2 mV s-1
. Elektrohemijski
dobijeni platinski katalizatori na pomenutom nosaču su okarakterisani metodom fotoelektronske
spektroskopija X-zraka (XPS), kao i elektrohemijskim tehnikama.
Za određivanje realne elektrohemijski aktivne površine elektrode je primenjena ciklična
voltametrija, integracijom ispod anodnog dela voltamograma u oblasti adsorpcije vodonika na
potpotencijalima. Za ispitivanje kinetike reakcije redukcije kiseonika je korišćena metoda linearne
skenirajuće voltametrije na rotirajućoj disk elektrodi. Dobijene su dve vrednosti Tafelovog nagiba,
jedna približno 60 mV dek-1
u oblasti malih prenapetosti, a druga ~ 120 mV dek-1
, u oblasti većih
gustina struje. Katalitička aktivnost katalizatora je poređena sa vrednostima iz literature dobijenim
na platini na ugljeničim nosačima na 0.85 V prema reverzibilnoj vodoničnoj elektrodi, izražena kao
kinetička gustina struje po realnoj površini electrode, ili specifična aktivnost – izražena kao
kinetička gustina struje po masi platine. Pokazano je da katalizator sa 10 monoslojeva platine
poseduje veoma dobru katalitičku aktivnost, posebno izraženu po masi istaložene platine.
PB  - Engineers Society for Corrosion
T2  - Zaštita materijala
T1  - Oxygen reduction reaction on electrochemically deposited sub-monolayers and ultra-thin layers of Pt on (Nb-Ti)2AlC substrate
T1  - Reakcija redukcije kiseonika na elektrohemijski istaloženim tankim slojevima platine na (Nb-Ti)2alc nosaču
EP  - 164
IS  - 2
SP  - 153
VL  - 63
DO  - 10.5937/zasmat2202153P
ER  - 

@article{
author = "Petričević, Aleksandar and Jović, Vladimir D. and Krstajić Pajić, Mila N. and Zabinski, Piotr and Elezović, Nevenka R.",
year = "2022",
abstract = "Catalytic activity towards the oxygen reduction reaction (ORR) in 0.5 M H2SO4 was investigated at sub-monolayers and ultra-thin layers (corresponding to 10, 30 and 100 monolayers, (MLs)) of Pt electrochemically deposited on (Nb-Ti)2AlC substrate. Electrochemical deposition of Pt layers on (Nb-Ti)2AlC substrate was achieved from the solution containing 3 mM K2PtCl4 + 0.5 M NaCl (pH 4) under the conditions of convective diffusion (RPM = 400) using linear sweep voltammetry (LSV) at a sweep rate of 2 mV s-1, by determining limiting potential for deposition of each Pt sample from the QPt vs. E curves. The Pt samples were characterized X-ray photoelectron spectroscopy (XPS). XPS analysis showed that practically the whole surface of (Nb-Ti)2AlC substrate is covered with homogeneous layer of Pt, while Pt ion reduction was complete to metallic form – Pt(0) valence state. Then oxygen reduction was studied at rotating disc electrode by cyclic voltammetry and linear sweep voltammetry. Two different Tafel slopes were observed, one close to 60 mV dec-1 in low current densities region and second one ~ 120 mV dec-1 in high current densities region. This novel catalyst exhibited higher activity in comparison to carbon supported one, in terms of mass activity – kinetic current density normalized to Pt loading., Ispitivana je reakcija redukcije kiseonika na tankim slojevima platine u 0.5 mol dm-3 H2SO4. Tanki
slojevi platine – čija količina naelektrisanja odgovara 10, 30 i 100 teorijskih monoslojeva Pt su
istaloženi na nosaču od (Nb-Ti)2AlC. Za elektrohemijsko taloženje je korišćen rastvor 3 mM
K2PtCl4 + 0.5 M NaCl pH = 4, u uslovima konvektivne difuzije (RPM = 400) primenom metode
linearne skenirajuće voltametrije (LSV) pri brzini promene potencijala od 2 mV s-1
. Elektrohemijski
dobijeni platinski katalizatori na pomenutom nosaču su okarakterisani metodom fotoelektronske
spektroskopija X-zraka (XPS), kao i elektrohemijskim tehnikama.
Za određivanje realne elektrohemijski aktivne površine elektrode je primenjena ciklična
voltametrija, integracijom ispod anodnog dela voltamograma u oblasti adsorpcije vodonika na
potpotencijalima. Za ispitivanje kinetike reakcije redukcije kiseonika je korišćena metoda linearne
skenirajuće voltametrije na rotirajućoj disk elektrodi. Dobijene su dve vrednosti Tafelovog nagiba,
jedna približno 60 mV dek-1
u oblasti malih prenapetosti, a druga ~ 120 mV dek-1
, u oblasti većih
gustina struje. Katalitička aktivnost katalizatora je poređena sa vrednostima iz literature dobijenim
na platini na ugljeničim nosačima na 0.85 V prema reverzibilnoj vodoničnoj elektrodi, izražena kao
kinetička gustina struje po realnoj površini electrode, ili specifična aktivnost – izražena kao
kinetička gustina struje po masi platine. Pokazano je da katalizator sa 10 monoslojeva platine
poseduje veoma dobru katalitičku aktivnost, posebno izraženu po masi istaložene platine.",
publisher = "Engineers Society for Corrosion",
journal = "Zaštita materijala",
title = "Oxygen reduction reaction on electrochemically deposited sub-monolayers and ultra-thin layers of Pt on (Nb-Ti)2AlC substrate, Reakcija redukcije kiseonika na elektrohemijski istaloženim tankim slojevima platine na (Nb-Ti)2alc nosaču",
pages = "164-153",
number = "2",
volume = "63",
doi = "10.5937/zasmat2202153P"
}

Petričević, A., Jović, V. D., Krstajić Pajić, M. N., Zabinski, P.,& Elezović, N. R.. (2022). Oxygen reduction reaction on electrochemically deposited sub-monolayers and ultra-thin layers of Pt on (Nb-Ti)2AlC substrate. in Zaštita materijala
Engineers Society for Corrosion., 63(2), 153-164.
https://doi.org/10.5937/zasmat2202153P

Petričević A, Jović VD, Krstajić Pajić MN, Zabinski P, Elezović NR. Oxygen reduction reaction on electrochemically deposited sub-monolayers and ultra-thin layers of Pt on (Nb-Ti)2AlC substrate. in Zaštita materijala. 2022;63(2):153-164.
doi:10.5937/zasmat2202153P .

Petričević, Aleksandar, Jović, Vladimir D., Krstajić Pajić, Mila N., Zabinski, Piotr, Elezović, Nevenka R., "Oxygen reduction reaction on electrochemically deposited sub-monolayers and ultra-thin layers of Pt on (Nb-Ti)2AlC substrate" in Zaštita materijala, 63, no. 2 (2022):153-164,
https://doi.org/10.5937/zasmat2202153P . .

TY  - JOUR
AU  - Elezović, Nevenka R.
AU  - Zabinski, P.
AU  - Lačnjevac, Uroš
AU  - Krstajić-Pajić, Mila
AU  - Jović, V. D.
PY  - 2021
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/10
AB  - Two types of iridium oxide films formed at the Ti-2 AlC substrate were investigated: (1) anodically electrodeposited iridium oxide film from the solution based on IrCl(3)xH(2)O; (2) iridium oxide film prepared by cycling thin layer of electrodeposited Ir in the 0.5 M H2SO4 from - 0.25 to 1.20 V. It was shown that during anodic electrodeposition of iridium oxide film (1) coulombic efficiency decreases with increasing anodic potential, being only 3% atE = 0.7 V vs. SCE and 26% atE = 0.62 V vs. SCE. A pair of peaks corresponding to the transition Ir(III)-oxide/Ir(IV)-oxide was present on the CVs recorded in 0.5 M H2SO4. While cycling pure Ir thin layer in the solution of 0.5 M H2SO4 from - 0.25 to 1.20 V (2) up to 100 cycles, typical CV response was characterized with the prepeak and a pair of peaks corresponding to the Ir(III)/Ir(IV)-oxide transition. With the increase of cycles number to 150, additional peak at potential of 1.0 V appeared. This peak was formed on the account of pair of peaks corresponding to the Ir(III)/Ir(IV)-oxide transition. The oxygen evolution reaction (OER) was investigated at both iridium oxide films. It was shown that the Tafel slope for the OER was similar to 40 mV dec(-1)for the first polarization curve, confirming that the rds was a reaction S-OH - gt  S-O-ads + H++ e(-). As the number of recorded polarization curves increased, the activity of both types of iridium oxide films decreased, due to dissolution of iridium oxide films at the potentials of the OER. It is shown that anodically electrodeposited iridium oxide film is more active for the OER than that obtained by cycling electrodeposited iridium layer. However, both iridium oxide films exhibited insufficient stability.
PB  - Springer, New York
T2  - Journal of Solid State Electrochemistry
T1  - Electrochemical deposition and characterization of iridium oxide films on Ti2AlC support for oxygen evolution reaction
EP  - 363
IS  - 1
SP  - 351
VL  - 25
DO  - 10.1007/s10008-020-04816-7
ER  - 

@article{
author = "Elezović, Nevenka R. and Zabinski, P. and Lačnjevac, Uroš and Krstajić-Pajić, Mila and Jović, V. D.",
year = "2021",
abstract = "Two types of iridium oxide films formed at the Ti-2 AlC substrate were investigated: (1) anodically electrodeposited iridium oxide film from the solution based on IrCl(3)xH(2)O; (2) iridium oxide film prepared by cycling thin layer of electrodeposited Ir in the 0.5 M H2SO4 from - 0.25 to 1.20 V. It was shown that during anodic electrodeposition of iridium oxide film (1) coulombic efficiency decreases with increasing anodic potential, being only 3% atE = 0.7 V vs. SCE and 26% atE = 0.62 V vs. SCE. A pair of peaks corresponding to the transition Ir(III)-oxide/Ir(IV)-oxide was present on the CVs recorded in 0.5 M H2SO4. While cycling pure Ir thin layer in the solution of 0.5 M H2SO4 from - 0.25 to 1.20 V (2) up to 100 cycles, typical CV response was characterized with the prepeak and a pair of peaks corresponding to the Ir(III)/Ir(IV)-oxide transition. With the increase of cycles number to 150, additional peak at potential of 1.0 V appeared. This peak was formed on the account of pair of peaks corresponding to the Ir(III)/Ir(IV)-oxide transition. The oxygen evolution reaction (OER) was investigated at both iridium oxide films. It was shown that the Tafel slope for the OER was similar to 40 mV dec(-1)for the first polarization curve, confirming that the rds was a reaction S-OH - gt  S-O-ads + H++ e(-). As the number of recorded polarization curves increased, the activity of both types of iridium oxide films decreased, due to dissolution of iridium oxide films at the potentials of the OER. It is shown that anodically electrodeposited iridium oxide film is more active for the OER than that obtained by cycling electrodeposited iridium layer. However, both iridium oxide films exhibited insufficient stability.",
publisher = "Springer, New York",
journal = "Journal of Solid State Electrochemistry",
title = "Electrochemical deposition and characterization of iridium oxide films on Ti2AlC support for oxygen evolution reaction",
pages = "363-351",
number = "1",
volume = "25",
doi = "10.1007/s10008-020-04816-7"
}

Elezović, N. R., Zabinski, P., Lačnjevac, U., Krstajić-Pajić, M.,& Jović, V. D.. (2021). Electrochemical deposition and characterization of iridium oxide films on Ti2AlC support for oxygen evolution reaction. in Journal of Solid State Electrochemistry
Springer, New York., 25(1), 351-363.
https://doi.org/10.1007/s10008-020-04816-7

Elezović NR, Zabinski P, Lačnjevac U, Krstajić-Pajić M, Jović VD. Electrochemical deposition and characterization of iridium oxide films on Ti2AlC support for oxygen evolution reaction. in Journal of Solid State Electrochemistry. 2021;25(1):351-363.
doi:10.1007/s10008-020-04816-7 .

Elezović, Nevenka R., Zabinski, P., Lačnjevac, Uroš, Krstajić-Pajić, Mila, Jović, V. D., "Electrochemical deposition and characterization of iridium oxide films on Ti2AlC support for oxygen evolution reaction" in Journal of Solid State Electrochemistry, 25, no. 1 (2021):351-363,
https://doi.org/10.1007/s10008-020-04816-7 . .

TY  - JOUR
AU  - Elezović, Nevenka R.
AU  - Krstajić-Pajić, Mila
AU  - Jović, Vladimir D.
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4551
AB  - The hydrogen evolution reaction (HER) was investigated at sub-monolayers of iridium electrodeposited on Ti2AlC substrate. The lowest amount of electrodeposited iridium was 3 close-packed (111) monolayers (3 ML), while the highest one was 22 ML (3, 5, 10, 15 and 22 ML). The lowest and the highest amounts of iridium were electrodeposited by linear sweep voltammetry (LSV), while the other three samples were electrodeposited by controlled potential coulometry, from the solution containing 1 mM, or 3 mM K3IrCl6 + 0.5 M Na2SO4 (pH 6.2) at 70 °C. The HER was investigated by polarization and electrochemical impedance spectroscopy (EIS) measurements. Polarization curves for iridium sub-monolayers equal, or higher than 6 ML showed low Tafel slope of -14 to -16 mV dec-1 up to about -0.1 A cm-2, while at higher current densities the Tafel slopes increased, varying between -40 and -72 mV dec-1. The highest value of exchange current density (jo) was obtained for 6 ML of electrodeposited iridium, being -27.89 A g-1. The overpotential at j = -0.3 A cm-2 could be determined for samples containing 15 ML and 22 ML of iridium, being 82 mV.
AB  - Izdvajanje vodonika ispitivano je u rastvoru sumporne kiseline na elektrohemijski istaloženim slojevima (od 3 monosloja do 22 monosloja) iridijuma na podlozi od Ti2AlC. Najmanja i najveća količina iridijuma (3 i 22 monosloja) elektrohemijski su istaložene metodom linearne voltametrije, dok su preostala tri uzorka (6, 10 i 15 monoslojeva) elektrohemijski istaložena pri konstantnom potencijalu do potrebne količine naelektrisanja iz rastvora 1 mM, ili 3 mM K3IrCl6 + 0.5 M Na2SO4 (pH 6.2) na temperaturi rastvora od 70 °C. Reakcija izdvajanja vodonika ispitivana je na svim elektrodama snimanjem polarizacionih krivih. Za uzorak sa 22 monosloja Ir primenjena je i metoda impedanse. Polarizacione krive za uzorke sa 6, 10, 15 i 22 monosloja Ir bile su okarakterisane malom vrednošću Tafel-ovog nagiba od -14 to -16 mV dek-1 u oblasti gustina struja do -0.1 A cm-2, dok se Tafel-ov nagib povećavao pri većim gustinama struja varirajući od -40 do -72 mV dek-1. Najveća vrednost specifične gustine struje izmene (jo) dobijena je kod uzorka sa 6 monoslojeva Ir i iznosila je - 27.89 A g-1. Za uzorke sa 15 i 22 monosloja Ir vrednost prenapetosti pri gustini struje j = -0.3 A cm-2 (uslovi industrijske proizvodnje vodonika) iznosila je 82 mV.
PB  - Engineering Society for Corrosion, Belgrade, Serbia
T2  - Zaštita materijala
T1  - Sub-monolayers of iridium electrodeposited on Ti2AlC substrate as catalysts for hydrogen evolution reaction in sulfuric acid solution
T1  - Nekoliko monoslojeva elektrohemijski istaloženog iridijuma na podlozi od Ti2AlC kao katalizatori za izdvajanje vodonika u rastvoru sumporne kiseline
EP  - 191
IS  - 3
SP  - 181
VL  - 61
DO  - 10.5937/zasmat2003181E
ER  - 

@article{
author = "Elezović, Nevenka R. and Krstajić-Pajić, Mila and Jović, Vladimir D.",
year = "2020",
abstract = "The hydrogen evolution reaction (HER) was investigated at sub-monolayers of iridium electrodeposited on Ti2AlC substrate. The lowest amount of electrodeposited iridium was 3 close-packed (111) monolayers (3 ML), while the highest one was 22 ML (3, 5, 10, 15 and 22 ML). The lowest and the highest amounts of iridium were electrodeposited by linear sweep voltammetry (LSV), while the other three samples were electrodeposited by controlled potential coulometry, from the solution containing 1 mM, or 3 mM K3IrCl6 + 0.5 M Na2SO4 (pH 6.2) at 70 °C. The HER was investigated by polarization and electrochemical impedance spectroscopy (EIS) measurements. Polarization curves for iridium sub-monolayers equal, or higher than 6 ML showed low Tafel slope of -14 to -16 mV dec-1 up to about -0.1 A cm-2, while at higher current densities the Tafel slopes increased, varying between -40 and -72 mV dec-1. The highest value of exchange current density (jo) was obtained for 6 ML of electrodeposited iridium, being -27.89 A g-1. The overpotential at j = -0.3 A cm-2 could be determined for samples containing 15 ML and 22 ML of iridium, being 82 mV., Izdvajanje vodonika ispitivano je u rastvoru sumporne kiseline na elektrohemijski istaloženim slojevima (od 3 monosloja do 22 monosloja) iridijuma na podlozi od Ti2AlC. Najmanja i najveća količina iridijuma (3 i 22 monosloja) elektrohemijski su istaložene metodom linearne voltametrije, dok su preostala tri uzorka (6, 10 i 15 monoslojeva) elektrohemijski istaložena pri konstantnom potencijalu do potrebne količine naelektrisanja iz rastvora 1 mM, ili 3 mM K3IrCl6 + 0.5 M Na2SO4 (pH 6.2) na temperaturi rastvora od 70 °C. Reakcija izdvajanja vodonika ispitivana je na svim elektrodama snimanjem polarizacionih krivih. Za uzorak sa 22 monosloja Ir primenjena je i metoda impedanse. Polarizacione krive za uzorke sa 6, 10, 15 i 22 monosloja Ir bile su okarakterisane malom vrednošću Tafel-ovog nagiba od -14 to -16 mV dek-1 u oblasti gustina struja do -0.1 A cm-2, dok se Tafel-ov nagib povećavao pri većim gustinama struja varirajući od -40 do -72 mV dek-1. Najveća vrednost specifične gustine struje izmene (jo) dobijena je kod uzorka sa 6 monoslojeva Ir i iznosila je - 27.89 A g-1. Za uzorke sa 15 i 22 monosloja Ir vrednost prenapetosti pri gustini struje j = -0.3 A cm-2 (uslovi industrijske proizvodnje vodonika) iznosila je 82 mV.",
publisher = "Engineering Society for Corrosion, Belgrade, Serbia",
journal = "Zaštita materijala",
title = "Sub-monolayers of iridium electrodeposited on Ti2AlC substrate as catalysts for hydrogen evolution reaction in sulfuric acid solution, Nekoliko monoslojeva elektrohemijski istaloženog iridijuma na podlozi od Ti2AlC kao katalizatori za izdvajanje vodonika u rastvoru sumporne kiseline",
pages = "191-181",
number = "3",
volume = "61",
doi = "10.5937/zasmat2003181E"
}

Elezović, N. R., Krstajić-Pajić, M.,& Jović, V. D.. (2020). Sub-monolayers of iridium electrodeposited on Ti2AlC substrate as catalysts for hydrogen evolution reaction in sulfuric acid solution. in Zaštita materijala
Engineering Society for Corrosion, Belgrade, Serbia., 61(3), 181-191.
https://doi.org/10.5937/zasmat2003181E

Elezović NR, Krstajić-Pajić M, Jović VD. Sub-monolayers of iridium electrodeposited on Ti2AlC substrate as catalysts for hydrogen evolution reaction in sulfuric acid solution. in Zaštita materijala. 2020;61(3):181-191.
doi:10.5937/zasmat2003181E .

Elezović, Nevenka R., Krstajić-Pajić, Mila, Jović, Vladimir D., "Sub-monolayers of iridium electrodeposited on Ti2AlC substrate as catalysts for hydrogen evolution reaction in sulfuric acid solution" in Zaštita materijala, 61, no. 3 (2020):181-191,
https://doi.org/10.5937/zasmat2003181E . .

TY  - CONF
AU  - Krstajić Pajić, Mila N.
AU  - Stevanović, Sanja I.
AU  - Radmilović, Vuk V.
AU  - Zabinski, Piotr
AU  - Elezović, Nevenka R.
AU  - Radmilović, Velimir R.
AU  - Gojković, Snežana Lj.
AU  - Jovanović, Vladislava M.
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/7311
AB  - Formic acid is one of the most promising small organic molecules that can be used as fuel in polymer
electrolyte fuel cells. These systems are recognized as high-efficiency energy conversion devices which could
offer energy generated from electrochemical processes. At carbon supported platinum nanoparticles as state
of the art anodic catalysts formic acid oxidation reaction (FAOR) proceeds through a dual path mechanism
that includes the formation of CO in the indirect reaction pathway. Since CO is a catalytic poison, the best
way to address this problem is to synthesize catalysts that would either provide prompt CO oxidation and
removal, or favour the direct reaction pathway to completely avoid CO formation and electrode poisoning.
PtAu systems are considered as efficient catalysts for FAOR due to the ensemble effect of Au on Pt, however
the optimal ratio of these two elements is still quite vague. Given the experience with water in oil
microemulsion synthesis for preparation of shape controlled Pt nanoparticles,1 bimetallic PtAu/C
nanocatalysts were synthesized by the same procedure, following a simultaneous precursor reduction
methodology.2 The amount of the capping agent used, was varied in order to cause formation of
nanoparticles with different shape (cubic or tetrahedron like). Addition of a very low, but very finely dispersed
amount of Au significantly increases the catalytic activity, and also affects kinetic of the particle growth,
influencing the particle shape. Ordered structure of these particles contributes to their stability as well. These
results were obtained by Electrochemical and High Resolution Transmission Electron Microscopy
characterization (HRTEM) with Energy Dispersive X-ray Spectroscopy (EDXS), along with X-Ray Diffraction and
(XRD) and X-Ray Photoelectron Spectroscopy (XPS).
PB  - International Association of Physical Chemists
C3  - Book of Abstracts / 7th Regional Symposium on Electrochemistry – South East Europe & 8th Kurt Schwabe Symposium, Split, Croatia, May 27-30, 2019
T1  - Catalysis at nano level: Promoting Pt nanoparticle activity by Au decoration
SP  - 119
UR  - https://hdl.handle.net/21.15107/rcub_technorep_7311
ER  - 

@conference{
author = "Krstajić Pajić, Mila N. and Stevanović, Sanja I. and Radmilović, Vuk V. and Zabinski, Piotr and Elezović, Nevenka R. and Radmilović, Velimir R. and Gojković, Snežana Lj. and Jovanović, Vladislava M.",
year = "2019",
abstract = "Formic acid is one of the most promising small organic molecules that can be used as fuel in polymer
electrolyte fuel cells. These systems are recognized as high-efficiency energy conversion devices which could
offer energy generated from electrochemical processes. At carbon supported platinum nanoparticles as state
of the art anodic catalysts formic acid oxidation reaction (FAOR) proceeds through a dual path mechanism
that includes the formation of CO in the indirect reaction pathway. Since CO is a catalytic poison, the best
way to address this problem is to synthesize catalysts that would either provide prompt CO oxidation and
removal, or favour the direct reaction pathway to completely avoid CO formation and electrode poisoning.
PtAu systems are considered as efficient catalysts for FAOR due to the ensemble effect of Au on Pt, however
the optimal ratio of these two elements is still quite vague. Given the experience with water in oil
microemulsion synthesis for preparation of shape controlled Pt nanoparticles,1 bimetallic PtAu/C
nanocatalysts were synthesized by the same procedure, following a simultaneous precursor reduction
methodology.2 The amount of the capping agent used, was varied in order to cause formation of
nanoparticles with different shape (cubic or tetrahedron like). Addition of a very low, but very finely dispersed
amount of Au significantly increases the catalytic activity, and also affects kinetic of the particle growth,
influencing the particle shape. Ordered structure of these particles contributes to their stability as well. These
results were obtained by Electrochemical and High Resolution Transmission Electron Microscopy
characterization (HRTEM) with Energy Dispersive X-ray Spectroscopy (EDXS), along with X-Ray Diffraction and
(XRD) and X-Ray Photoelectron Spectroscopy (XPS).",
publisher = "International Association of Physical Chemists",
journal = "Book of Abstracts / 7th Regional Symposium on Electrochemistry – South East Europe & 8th Kurt Schwabe Symposium, Split, Croatia, May 27-30, 2019",
title = "Catalysis at nano level: Promoting Pt nanoparticle activity by Au decoration",
pages = "119",
url = "https://hdl.handle.net/21.15107/rcub_technorep_7311"
}

Krstajić Pajić, M. N., Stevanović, S. I., Radmilović, V. V., Zabinski, P., Elezović, N. R., Radmilović, V. R., Gojković, S. Lj.,& Jovanović, V. M.. (2019). Catalysis at nano level: Promoting Pt nanoparticle activity by Au decoration. in Book of Abstracts / 7th Regional Symposium on Electrochemistry – South East Europe & 8th Kurt Schwabe Symposium, Split, Croatia, May 27-30, 2019
International Association of Physical Chemists., 119.
https://hdl.handle.net/21.15107/rcub_technorep_7311

Krstajić Pajić MN, Stevanović SI, Radmilović VV, Zabinski P, Elezović NR, Radmilović VR, Gojković SL, Jovanović VM. Catalysis at nano level: Promoting Pt nanoparticle activity by Au decoration. in Book of Abstracts / 7th Regional Symposium on Electrochemistry – South East Europe & 8th Kurt Schwabe Symposium, Split, Croatia, May 27-30, 2019. 2019;:119.
https://hdl.handle.net/21.15107/rcub_technorep_7311 .

Krstajić Pajić, Mila N., Stevanović, Sanja I., Radmilović, Vuk V., Zabinski, Piotr, Elezović, Nevenka R., Radmilović, Velimir R., Gojković, Snežana Lj., Jovanović, Vladislava M., "Catalysis at nano level: Promoting Pt nanoparticle activity by Au decoration" in Book of Abstracts / 7th Regional Symposium on Electrochemistry – South East Europe & 8th Kurt Schwabe Symposium, Split, Croatia, May 27-30, 2019 (2019):119,
https://hdl.handle.net/21.15107/rcub_technorep_7311 .

TY  - JOUR
AU  - Krstajić-Pajić, Mila
AU  - Stevanović, Sanja
AU  - Radmilović, Vuk
AU  - Gavrilović-Wohlmuther, Aleksandra
AU  - Zabinski, Piotr
AU  - Elezović, Nevenka R.
AU  - Radmilović, Velimir R.
AU  - Gojković, Snežana Lj.
AU  - Jovanović, Vladislava M.
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4330
AB  - Low loading PtAu nanoparticles supported on high area carbon were synthesized by water-in-oil microemulsion method and examined for formic acid and methanol oxidation. Prepared catalyst powder was characterized by Xray diffraction (XRD), transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDS) and X-ray photoelectron spectroscopy (XPS). These techniques revealed that the catalyst contains rather agglomerated quasi-spherical particles, similar to 4 nm diameter, composed of a solid solution of Pt and Au with only similar to 4 at% of Au. In spite of such low Au content, both onset and peak potentials for CO oxidation are shifted some 150 mV to more positive values in comparison to Pt synthesized in the same manner due to stronger binding of CO as a result of notable electronic effect. It is important that this small quantity of Au also significantly influences oxidation of formic acid promoting direct path and suppressing indirect path in formic acid oxidation in a degree as expected by a much larger quantity of Au. Such improvement could be due exclusively by ensemble effect of high number of small Pt domains which formation could be possible only by very fine dispersion of such low Au quantity. High number of small Pt domains is corroborated by lower activity for methanol oxidation in comparison to Pt catalyst synthesized by the same procedure. These results emphasize the importance of the Au dispersion on the surface of Pt over its quantity in PtAu catalyst with regards to both, the ensemble and the electronic effects.
PB  - Elsevier Science Bv, Amsterdam
T2  - Applied Catalysis B-Environmental
T1  - Dispersion effect in formic acid oxidation on PtAu/C nanocatalyst prepared by water-in-oil microemulsion method
EP  - 593
SP  - 585
VL  - 243
DO  - 10.1016/j.apcatb.2018.10.064
ER  - 

@article{
author = "Krstajić-Pajić, Mila and Stevanović, Sanja and Radmilović, Vuk and Gavrilović-Wohlmuther, Aleksandra and Zabinski, Piotr and Elezović, Nevenka R. and Radmilović, Velimir R. and Gojković, Snežana Lj. and Jovanović, Vladislava M.",
year = "2019",
abstract = "Low loading PtAu nanoparticles supported on high area carbon were synthesized by water-in-oil microemulsion method and examined for formic acid and methanol oxidation. Prepared catalyst powder was characterized by Xray diffraction (XRD), transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDS) and X-ray photoelectron spectroscopy (XPS). These techniques revealed that the catalyst contains rather agglomerated quasi-spherical particles, similar to 4 nm diameter, composed of a solid solution of Pt and Au with only similar to 4 at% of Au. In spite of such low Au content, both onset and peak potentials for CO oxidation are shifted some 150 mV to more positive values in comparison to Pt synthesized in the same manner due to stronger binding of CO as a result of notable electronic effect. It is important that this small quantity of Au also significantly influences oxidation of formic acid promoting direct path and suppressing indirect path in formic acid oxidation in a degree as expected by a much larger quantity of Au. Such improvement could be due exclusively by ensemble effect of high number of small Pt domains which formation could be possible only by very fine dispersion of such low Au quantity. High number of small Pt domains is corroborated by lower activity for methanol oxidation in comparison to Pt catalyst synthesized by the same procedure. These results emphasize the importance of the Au dispersion on the surface of Pt over its quantity in PtAu catalyst with regards to both, the ensemble and the electronic effects.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Applied Catalysis B-Environmental",
title = "Dispersion effect in formic acid oxidation on PtAu/C nanocatalyst prepared by water-in-oil microemulsion method",
pages = "593-585",
volume = "243",
doi = "10.1016/j.apcatb.2018.10.064"
}

Krstajić-Pajić, M., Stevanović, S., Radmilović, V., Gavrilović-Wohlmuther, A., Zabinski, P., Elezović, N. R., Radmilović, V. R., Gojković, S. Lj.,& Jovanović, V. M.. (2019). Dispersion effect in formic acid oxidation on PtAu/C nanocatalyst prepared by water-in-oil microemulsion method. in Applied Catalysis B-Environmental
Elsevier Science Bv, Amsterdam., 243, 585-593.
https://doi.org/10.1016/j.apcatb.2018.10.064

Krstajić-Pajić M, Stevanović S, Radmilović V, Gavrilović-Wohlmuther A, Zabinski P, Elezović NR, Radmilović VR, Gojković SL, Jovanović VM. Dispersion effect in formic acid oxidation on PtAu/C nanocatalyst prepared by water-in-oil microemulsion method. in Applied Catalysis B-Environmental. 2019;243:585-593.
doi:10.1016/j.apcatb.2018.10.064 .

Krstajić-Pajić, Mila, Stevanović, Sanja, Radmilović, Vuk, Gavrilović-Wohlmuther, Aleksandra, Zabinski, Piotr, Elezović, Nevenka R., Radmilović, Velimir R., Gojković, Snežana Lj., Jovanović, Vladislava M., "Dispersion effect in formic acid oxidation on PtAu/C nanocatalyst prepared by water-in-oil microemulsion method" in Applied Catalysis B-Environmental, 243 (2019):585-593,
https://doi.org/10.1016/j.apcatb.2018.10.064 . .

TY  - JOUR
AU  - Elezović, Nevenka R.
AU  - Zabinski, Piotr
AU  - Krstajić-Pajić, Mila
AU  - Tokarski, Tomasz
AU  - Jović, Borka M.
AU  - Jović, Vladimir D.
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4011
AB  - The AgPd alloys were electrodeposited onto Au and glassy carbon disc electrodes from the solution containing 0 001 mol dm(-3) PdCl2 + 0.04 mol dm(-3) AgCl + 0.1 mol dm(-3) HCl + 12 mol dm(-3) LiCl under the non-stationary diffusion (quiescent electrolyte) and convective diffusion (omega = 1000 rpm) to the different amounts of charge and at different current densities. Electro-deposited alloy layers were characterized by the anodic linear sweep voltam-metry (ALSV), scanning electron microscopy, energy dispersive X-ray spectro-scopy (EDS) and X-ray photoelectron spectroscopy (XPS). The compositions of the AgPd alloys determined by the EDS were almost identical to the theoretically predicted ones, while the compositions obtained by XPS and ALSV analysis were similar to each other, but different from those obtained by EDS. Deviation from the theoretically predicted values (determined by the ratio j(L)(Pd)/j(Ag)) was more pronounced at lower current densities and lower charges of AgPd alloys electrodeposition, due to the lower current efficiencies for alloys electrodeposition. The ALSV analysis indicated the presence of Ag and Pd, expressed by two ALSV peaks, and in some cases the presence of the additional peak, which was found to correspond to the dissolution of large AgPd crystals, formed at thicker electrodeposits (higher electrodeposition charge), indicating, for the first time, that besides the phase structure, the morphology of alloy electrodeposit could also influence the shape of the ALSV response. In addition to Ag and Pd, the XPS analysis confirmed the presence of AgCl at the surface of samples electrodeposited to low thicknesses (amounts of charge).
PB  - Srpsko hemijsko društvo, Beograd
T2  - Journal of the Serbian Chemical Society
T1  - Electrochemical deposition and characterization of AgPd alloy layers
EP  - 609
IS  - 5
SP  - 593
VL  - 83
DO  - 10.2298/JSC171103011E
ER  - 

@article{
author = "Elezović, Nevenka R. and Zabinski, Piotr and Krstajić-Pajić, Mila and Tokarski, Tomasz and Jović, Borka M. and Jović, Vladimir D.",
year = "2018",
abstract = "The AgPd alloys were electrodeposited onto Au and glassy carbon disc electrodes from the solution containing 0 001 mol dm(-3) PdCl2 + 0.04 mol dm(-3) AgCl + 0.1 mol dm(-3) HCl + 12 mol dm(-3) LiCl under the non-stationary diffusion (quiescent electrolyte) and convective diffusion (omega = 1000 rpm) to the different amounts of charge and at different current densities. Electro-deposited alloy layers were characterized by the anodic linear sweep voltam-metry (ALSV), scanning electron microscopy, energy dispersive X-ray spectro-scopy (EDS) and X-ray photoelectron spectroscopy (XPS). The compositions of the AgPd alloys determined by the EDS were almost identical to the theoretically predicted ones, while the compositions obtained by XPS and ALSV analysis were similar to each other, but different from those obtained by EDS. Deviation from the theoretically predicted values (determined by the ratio j(L)(Pd)/j(Ag)) was more pronounced at lower current densities and lower charges of AgPd alloys electrodeposition, due to the lower current efficiencies for alloys electrodeposition. The ALSV analysis indicated the presence of Ag and Pd, expressed by two ALSV peaks, and in some cases the presence of the additional peak, which was found to correspond to the dissolution of large AgPd crystals, formed at thicker electrodeposits (higher electrodeposition charge), indicating, for the first time, that besides the phase structure, the morphology of alloy electrodeposit could also influence the shape of the ALSV response. In addition to Ag and Pd, the XPS analysis confirmed the presence of AgCl at the surface of samples electrodeposited to low thicknesses (amounts of charge).",
publisher = "Srpsko hemijsko društvo, Beograd",
journal = "Journal of the Serbian Chemical Society",
title = "Electrochemical deposition and characterization of AgPd alloy layers",
pages = "609-593",
number = "5",
volume = "83",
doi = "10.2298/JSC171103011E"
}

Elezović, N. R., Zabinski, P., Krstajić-Pajić, M., Tokarski, T., Jović, B. M.,& Jović, V. D.. (2018). Electrochemical deposition and characterization of AgPd alloy layers. in Journal of the Serbian Chemical Society
Srpsko hemijsko društvo, Beograd., 83(5), 593-609.
https://doi.org/10.2298/JSC171103011E

Elezović NR, Zabinski P, Krstajić-Pajić M, Tokarski T, Jović BM, Jović VD. Electrochemical deposition and characterization of AgPd alloy layers. in Journal of the Serbian Chemical Society. 2018;83(5):593-609.
doi:10.2298/JSC171103011E .

Elezović, Nevenka R., Zabinski, Piotr, Krstajić-Pajić, Mila, Tokarski, Tomasz, Jović, Borka M., Jović, Vladimir D., "Electrochemical deposition and characterization of AgPd alloy layers" in Journal of the Serbian Chemical Society, 83, no. 5 (2018):593-609,
https://doi.org/10.2298/JSC171103011E . .

TY  - JOUR
AU  - Elezović, Nevenka R.
AU  - Radmilović, Velimir R
AU  - Krstajić, Nedeljko V
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5834
AB  - In this manuscript a survey of the contemporary research related to platinum nanocatalysts on metal oxide based supports for low temperature fuel cell applications is presented. Different carbon based supports, used as state of the art materials, are listed and discussed, as well. Although carbon based materials possess many desirable properties, such as high surface area, high conductivity and relatively low cost and easy synthesis, the large scale commercialization is limited by instability under accelerated stability testing, simulating real fuel cell operating conditions. To overcome these disadvantages of carbon supports, different metal oxide based ones have been studied and promising results are referenced. The most often used oxide based supports for low temperature fuel cell applications are presented in this review. Suitable discussion and future research related remarks are given, as well.
PB  - Royal Soc Chemistry, Cambridge
T2  - RSC Advances
T1  - Platinum nanocatalysts on metal oxide based supports for low temperature fuel cell applications
EP  - 6801
IS  - 8
SP  - 6788
VL  - 6
DO  - 10.1039/C5RA22403A
ER  - 

@article{
author = "Elezović, Nevenka R. and Radmilović, Velimir R and Krstajić, Nedeljko V",
year = "2016",
abstract = "In this manuscript a survey of the contemporary research related to platinum nanocatalysts on metal oxide based supports for low temperature fuel cell applications is presented. Different carbon based supports, used as state of the art materials, are listed and discussed, as well. Although carbon based materials possess many desirable properties, such as high surface area, high conductivity and relatively low cost and easy synthesis, the large scale commercialization is limited by instability under accelerated stability testing, simulating real fuel cell operating conditions. To overcome these disadvantages of carbon supports, different metal oxide based ones have been studied and promising results are referenced. The most often used oxide based supports for low temperature fuel cell applications are presented in this review. Suitable discussion and future research related remarks are given, as well.",
publisher = "Royal Soc Chemistry, Cambridge",
journal = "RSC Advances",
title = "Platinum nanocatalysts on metal oxide based supports for low temperature fuel cell applications",
pages = "6801-6788",
number = "8",
volume = "6",
doi = "10.1039/C5RA22403A"
}

Elezović, N. R., Radmilović, V. R.,& Krstajić, N. V.. (2016). Platinum nanocatalysts on metal oxide based supports for low temperature fuel cell applications. in RSC Advances
Royal Soc Chemistry, Cambridge., 6(8), 6788-6801.
https://doi.org/10.1039/C5RA22403A

Elezović NR, Radmilović VR, Krstajić NV. Platinum nanocatalysts on metal oxide based supports for low temperature fuel cell applications. in RSC Advances. 2016;6(8):6788-6801.
doi:10.1039/C5RA22403A .

Elezović, Nevenka R., Radmilović, Velimir R, Krstajić, Nedeljko V, "Platinum nanocatalysts on metal oxide based supports for low temperature fuel cell applications" in RSC Advances, 6, no. 8 (2016):6788-6801,
https://doi.org/10.1039/C5RA22403A . .

TY  - JOUR
AU  - Elezović, Nevenka R.
AU  - Ercius, P.
AU  - Kovac, Janez
AU  - Radmilović, Velimir R
AU  - Babić, Biljana M.
AU  - Krstajić, Nedeljko V
PY  - 2015
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5799
AB  - Ruthenium oxide/titanium oxide, with a Ru:Ti atomic ratio of 7:3 was synthesized by modified sol-gel procedure and used as a support for platinum nanocatalyst for oxygen reduction reaction. The synthesized materials were characterized in terms of morphology, particle size distribution, chemical and phase composition by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), high angle annular dark filed scanning transmission electron microscopy (HAADF, STEM) and electron energy loss spectroscopy (EELS). XPS spectra revealed that Ru atoms were in mainly in Ru(4+) oxidation state, the Ti atoms in Ti(4+) oxidation state, whereas the Pt-atoms were in metallic state. TEM analysis proved that platinum nanoparticles nucleated at both oxide species and homogeneous distribution was observed. The average platinum nanoparticle size was 3.05 nm. Electrochemically active surface area of platinum was 32 m(2) g(-1). Kinetics of the oxygen reduction was studied at rotating disc electrode in 0.5 mol dm(-3) HClO4 solution, at 25 degrees C. The catalytic activities expressed in terms of specific activity (per electrochemically active surface area of platinum) and mass activity (per mass of platinum) were determined and compared to Pt catalyst on carbon support. The high catalytic activity was proven by electrochemical characterization.
PB  - Elsevier Science Sa, Lausanne
T2  - Journal of Electroanalytical Chemistry
T1  - Synthesis and characterization of Pt nanocatalyst on Ru0.7Ti0.3O2 support as a cathode for fuel cells application
EP  - 171
SP  - 164
VL  - 739
DO  - 10.1016/j.jelechem.2014.12.033
ER  - 

@article{
author = "Elezović, Nevenka R. and Ercius, P. and Kovac, Janez and Radmilović, Velimir R and Babić, Biljana M. and Krstajić, Nedeljko V",
year = "2015",
abstract = "Ruthenium oxide/titanium oxide, with a Ru:Ti atomic ratio of 7:3 was synthesized by modified sol-gel procedure and used as a support for platinum nanocatalyst for oxygen reduction reaction. The synthesized materials were characterized in terms of morphology, particle size distribution, chemical and phase composition by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), high angle annular dark filed scanning transmission electron microscopy (HAADF, STEM) and electron energy loss spectroscopy (EELS). XPS spectra revealed that Ru atoms were in mainly in Ru(4+) oxidation state, the Ti atoms in Ti(4+) oxidation state, whereas the Pt-atoms were in metallic state. TEM analysis proved that platinum nanoparticles nucleated at both oxide species and homogeneous distribution was observed. The average platinum nanoparticle size was 3.05 nm. Electrochemically active surface area of platinum was 32 m(2) g(-1). Kinetics of the oxygen reduction was studied at rotating disc electrode in 0.5 mol dm(-3) HClO4 solution, at 25 degrees C. The catalytic activities expressed in terms of specific activity (per electrochemically active surface area of platinum) and mass activity (per mass of platinum) were determined and compared to Pt catalyst on carbon support. The high catalytic activity was proven by electrochemical characterization.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Journal of Electroanalytical Chemistry",
title = "Synthesis and characterization of Pt nanocatalyst on Ru0.7Ti0.3O2 support as a cathode for fuel cells application",
pages = "171-164",
volume = "739",
doi = "10.1016/j.jelechem.2014.12.033"
}

Elezović, N. R., Ercius, P., Kovac, J., Radmilović, V. R., Babić, B. M.,& Krstajić, N. V.. (2015). Synthesis and characterization of Pt nanocatalyst on Ru0.7Ti0.3O2 support as a cathode for fuel cells application. in Journal of Electroanalytical Chemistry
Elsevier Science Sa, Lausanne., 739, 164-171.
https://doi.org/10.1016/j.jelechem.2014.12.033

Elezović NR, Ercius P, Kovac J, Radmilović VR, Babić BM, Krstajić NV. Synthesis and characterization of Pt nanocatalyst on Ru0.7Ti0.3O2 support as a cathode for fuel cells application. in Journal of Electroanalytical Chemistry. 2015;739:164-171.
doi:10.1016/j.jelechem.2014.12.033 .

Elezović, Nevenka R., Ercius, P., Kovac, Janez, Radmilović, Velimir R, Babić, Biljana M., Krstajić, Nedeljko V, "Synthesis and characterization of Pt nanocatalyst on Ru0.7Ti0.3O2 support as a cathode for fuel cells application" in Journal of Electroanalytical Chemistry, 739 (2015):164-171,
https://doi.org/10.1016/j.jelechem.2014.12.033 . .

TY  - JOUR
AU  - Obradović, Maja
AU  - Gojković, Snežana Lj.
AU  - Elezović, Nevenka R.
AU  - Ercius, P.
AU  - Radmilović, Velimir R.
AU  - Vračar, Ljiljana M.
AU  - Krstajić, Nedeljko V.
PY  - 2012
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2127
AB  - The catalytic activity of WC/Pt electrocatalysts towards hydrogen oxidation reaction (HOR) in acid solution was studied. Tungsten carbide (WC) prepared by polycondensation of resorcinol and formaldehyde in the presence of ammonium metatungstate salt and CTABr surfactant was used as the support of a Pt electrocatalyst (WC/Pt). The obtained WC/Pt electrodes were characterized by XRD, HRTEM, EDS, EELS and electrochemical measurements. HRTEM analysis showed that the WC particles possess a core-shell structure with a metallic tungsten core and a shell composed of a mixture of tungsten carbides shell (WC and W2C). The WC/Pt catalyst is composed of well-dispersed sub-nanometer Pt clusters which consist of a few to several tens of Pt atoms. EELS measurements indicate that the WC particles function as nucleation sites for Pt nanoparticles. Based on the Tafel-Heyrovsky-Volmer mechanism the corresponding kinetic equations were derived to describe the HOR current-potential behavior over the entire potential region on RDE. The fitting showed that in the lower potential region HOR on Pt proceeds most likely via the Tafel-Volmer (TV) pathway. The kinetic results also showed that the WC/Pt(1%) when compared to the standard C/Pt(1%) electrode led to a remarkable enhancement of the hydrogen oxidation in an acidic medium, which was explained by H-spill-over between platinum and tungsten carbide.
PB  - Elsevier Science Sa, Lausanne
T2  - Journal of Electroanalytical Chemistry
T1  - The kinetics of the hydrogen oxidation reaction on WC/Pt catalyst with low content of Pt nano-particles
EP  - 32
SP  - 24
VL  - 671
DO  - 10.1016/j.jelechem.2012.01.026
ER  - 

@article{
author = "Obradović, Maja and Gojković, Snežana Lj. and Elezović, Nevenka R. and Ercius, P. and Radmilović, Velimir R. and Vračar, Ljiljana M. and Krstajić, Nedeljko V.",
year = "2012",
abstract = "The catalytic activity of WC/Pt electrocatalysts towards hydrogen oxidation reaction (HOR) in acid solution was studied. Tungsten carbide (WC) prepared by polycondensation of resorcinol and formaldehyde in the presence of ammonium metatungstate salt and CTABr surfactant was used as the support of a Pt electrocatalyst (WC/Pt). The obtained WC/Pt electrodes were characterized by XRD, HRTEM, EDS, EELS and electrochemical measurements. HRTEM analysis showed that the WC particles possess a core-shell structure with a metallic tungsten core and a shell composed of a mixture of tungsten carbides shell (WC and W2C). The WC/Pt catalyst is composed of well-dispersed sub-nanometer Pt clusters which consist of a few to several tens of Pt atoms. EELS measurements indicate that the WC particles function as nucleation sites for Pt nanoparticles. Based on the Tafel-Heyrovsky-Volmer mechanism the corresponding kinetic equations were derived to describe the HOR current-potential behavior over the entire potential region on RDE. The fitting showed that in the lower potential region HOR on Pt proceeds most likely via the Tafel-Volmer (TV) pathway. The kinetic results also showed that the WC/Pt(1%) when compared to the standard C/Pt(1%) electrode led to a remarkable enhancement of the hydrogen oxidation in an acidic medium, which was explained by H-spill-over between platinum and tungsten carbide.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Journal of Electroanalytical Chemistry",
title = "The kinetics of the hydrogen oxidation reaction on WC/Pt catalyst with low content of Pt nano-particles",
pages = "32-24",
volume = "671",
doi = "10.1016/j.jelechem.2012.01.026"
}

Obradović, M., Gojković, S. Lj., Elezović, N. R., Ercius, P., Radmilović, V. R., Vračar, L. M.,& Krstajić, N. V.. (2012). The kinetics of the hydrogen oxidation reaction on WC/Pt catalyst with low content of Pt nano-particles. in Journal of Electroanalytical Chemistry
Elsevier Science Sa, Lausanne., 671, 24-32.
https://doi.org/10.1016/j.jelechem.2012.01.026

Obradović M, Gojković SL, Elezović NR, Ercius P, Radmilović VR, Vračar LM, Krstajić NV. The kinetics of the hydrogen oxidation reaction on WC/Pt catalyst with low content of Pt nano-particles. in Journal of Electroanalytical Chemistry. 2012;671:24-32.
doi:10.1016/j.jelechem.2012.01.026 .

Obradović, Maja, Gojković, Snežana Lj., Elezović, Nevenka R., Ercius, P., Radmilović, Velimir R., Vračar, Ljiljana M., Krstajić, Nedeljko V., "The kinetics of the hydrogen oxidation reaction on WC/Pt catalyst with low content of Pt nano-particles" in Journal of Electroanalytical Chemistry, 671 (2012):24-32,
https://doi.org/10.1016/j.jelechem.2012.01.026 . .

TY  - JOUR
AU  - Babić, Biljana M.
AU  - Gulicovski, Jelena
AU  - Gajić Krstajić, Ljiljana
AU  - Elezović, Nevenka
AU  - Radmilović, Velimir R.
AU  - Krstajić, Nedeljko
AU  - Vračar, Ljiljana
PY  - 2009
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5531
AB  - The kinetics and mechanism of the hydrogen oxidation reaction were studied in 0.5 mol dm-3 HClO4 solution on an electrode based on titanium oxide with Magneli phase structure-supported platinum electrocatalyst applied on rotation Au disk electrode. Pt catalyst was prepared by impregnation method from 2-propanol solution of Pt(NH3)2(NO2)2 and sub-stoichiometric titanium oxide powder. Sub-stiochiometric titanium oxide support was characterized by X-ray diffraction and BET techniques. The synthesized catalyst was analyzed by TEM technique. Based on Tafel-Heyrovsky-Volmer mechanism the corresponding kinetic equations were derived to describe the hydrogen oxidation current-potential behavior on RDE over the entire potential region. The polarization RDE curves were fitted with derived polarization equations according to proposed model. The fitting shows that the HOR on Pt proceeds most likely via the Tafel-Volmer (TV) pathway in the lower potential region, while the Heyrovsky-Volmer (HV) pathway is operative in the higher potential region. It is pointed out that Tafel equation that has been frequently used for the kinetics analysis in the HOR, can not reproduce the polarization curves measured with high mass-transport rates. Polarization measurements on RDE revealed that the Pt catalyst deposited on titanium suboxide support showed equal specific activity for the HOR compared to conventional carbon-supported Pt fuel cell catalyst. © 2008 Elsevier B.V. All rights reserved.
PB  - Elsevier
T2  - Journal of Power Sources
T1  - Kinetic study of the hydrogen oxidation reaction on sub-stoichiometric titanium oxide-supported platinum electrocatalyst in acid solution
EP  - 106
IS  - 1
SP  - 99
VL  - 193
DO  - 10.1016/j.jpowsour.2008.11.142
UR  - https://hdl.handle.net/21.15107/rcub_dais_3480
ER  - 

@article{
author = "Babić, Biljana M. and Gulicovski, Jelena and Gajić Krstajić, Ljiljana and Elezović, Nevenka and Radmilović, Velimir R. and Krstajić, Nedeljko and Vračar, Ljiljana",
year = "2009",
abstract = "The kinetics and mechanism of the hydrogen oxidation reaction were studied in 0.5 mol dm-3 HClO4 solution on an electrode based on titanium oxide with Magneli phase structure-supported platinum electrocatalyst applied on rotation Au disk electrode. Pt catalyst was prepared by impregnation method from 2-propanol solution of Pt(NH3)2(NO2)2 and sub-stoichiometric titanium oxide powder. Sub-stiochiometric titanium oxide support was characterized by X-ray diffraction and BET techniques. The synthesized catalyst was analyzed by TEM technique. Based on Tafel-Heyrovsky-Volmer mechanism the corresponding kinetic equations were derived to describe the hydrogen oxidation current-potential behavior on RDE over the entire potential region. The polarization RDE curves were fitted with derived polarization equations according to proposed model. The fitting shows that the HOR on Pt proceeds most likely via the Tafel-Volmer (TV) pathway in the lower potential region, while the Heyrovsky-Volmer (HV) pathway is operative in the higher potential region. It is pointed out that Tafel equation that has been frequently used for the kinetics analysis in the HOR, can not reproduce the polarization curves measured with high mass-transport rates. Polarization measurements on RDE revealed that the Pt catalyst deposited on titanium suboxide support showed equal specific activity for the HOR compared to conventional carbon-supported Pt fuel cell catalyst. © 2008 Elsevier B.V. All rights reserved.",
publisher = "Elsevier",
journal = "Journal of Power Sources",
title = "Kinetic study of the hydrogen oxidation reaction on sub-stoichiometric titanium oxide-supported platinum electrocatalyst in acid solution",
pages = "106-99",
number = "1",
volume = "193",
doi = "10.1016/j.jpowsour.2008.11.142",
url = "https://hdl.handle.net/21.15107/rcub_dais_3480"
}

Babić, B. M., Gulicovski, J., Gajić Krstajić, L., Elezović, N., Radmilović, V. R., Krstajić, N.,& Vračar, L.. (2009). Kinetic study of the hydrogen oxidation reaction on sub-stoichiometric titanium oxide-supported platinum electrocatalyst in acid solution. in Journal of Power Sources
Elsevier., 193(1), 99-106.
https://doi.org/10.1016/j.jpowsour.2008.11.142
https://hdl.handle.net/21.15107/rcub_dais_3480

Babić BM, Gulicovski J, Gajić Krstajić L, Elezović N, Radmilović VR, Krstajić N, Vračar L. Kinetic study of the hydrogen oxidation reaction on sub-stoichiometric titanium oxide-supported platinum electrocatalyst in acid solution. in Journal of Power Sources. 2009;193(1):99-106.
doi:10.1016/j.jpowsour.2008.11.142
https://hdl.handle.net/21.15107/rcub_dais_3480 .

Babić, Biljana M., Gulicovski, Jelena, Gajić Krstajić, Ljiljana, Elezović, Nevenka, Radmilović, Velimir R., Krstajić, Nedeljko, Vračar, Ljiljana, "Kinetic study of the hydrogen oxidation reaction on sub-stoichiometric titanium oxide-supported platinum electrocatalyst in acid solution" in Journal of Power Sources, 193, no. 1 (2009):99-106,
https://doi.org/10.1016/j.jpowsour.2008.11.142 .,
https://hdl.handle.net/21.15107/rcub_dais_3480 .

TY  - JOUR
AU  - Elezović, Nevenka R.
AU  - Gajić Krstajić, Ljiljana
AU  - Radmilović, Velimir R.
AU  - Vračar, Ljiljana
AU  - Krstajić, Nedeljko
PY  - 2009
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5525
AB  - The influence of poisoning of Pt catalyst by CO on the kinetics and mechanism of H2 oxidation reaction (HOR) at Pt/C electrode in 0.5 mol dm-3 HClO4, saturated with H2 containing 100 ppm CO, was examined with rotating disc electrode (RDE) at 22 °C. Commercial carbon black, Vulcan XC-72 was used as support, while Pt/C catalyst was prepared by modified polyol synthesis method in an ethylene glycol (EG) solution. The kinetically controlled current (Ik) for the HOR at Pt/C decreases significantly at CO coverage (ΘCO) > 0.6. For ΘCO < 0.6 the HOR takes place through Tafel-Volmer mechanism with Tafel reaction as rate-determining step at the low CO coverage, while Volmer step controls the overall reaction rate at the medium CO coverage. When CO coverage is higher then 0.6, Heyrovsky-Volmer mechanism is operative for the HOR with Heyrovsky as the rate-determining step (rds). © 2008 Elsevier Ltd. All rights reserved.
PB  - Elsevier
T2  - Electrochimica Acta
T1  - Effect of chemisorbed carbon monoxide on Pt/C electrode on the mechanism of the hydrogen oxidation reaction
EP  - 1382
IS  - 4
SP  - 1375
VL  - 54
DO  - 10.1016/j.electacta.2008.08.067
UR  - https://hdl.handle.net/21.15107/rcub_dais_3485
ER  - 

@article{
author = "Elezović, Nevenka R. and Gajić Krstajić, Ljiljana and Radmilović, Velimir R. and Vračar, Ljiljana and Krstajić, Nedeljko",
year = "2009",
abstract = "The influence of poisoning of Pt catalyst by CO on the kinetics and mechanism of H2 oxidation reaction (HOR) at Pt/C electrode in 0.5 mol dm-3 HClO4, saturated with H2 containing 100 ppm CO, was examined with rotating disc electrode (RDE) at 22 °C. Commercial carbon black, Vulcan XC-72 was used as support, while Pt/C catalyst was prepared by modified polyol synthesis method in an ethylene glycol (EG) solution. The kinetically controlled current (Ik) for the HOR at Pt/C decreases significantly at CO coverage (ΘCO) > 0.6. For ΘCO < 0.6 the HOR takes place through Tafel-Volmer mechanism with Tafel reaction as rate-determining step at the low CO coverage, while Volmer step controls the overall reaction rate at the medium CO coverage. When CO coverage is higher then 0.6, Heyrovsky-Volmer mechanism is operative for the HOR with Heyrovsky as the rate-determining step (rds). © 2008 Elsevier Ltd. All rights reserved.",
publisher = "Elsevier",
journal = "Electrochimica Acta",
title = "Effect of chemisorbed carbon monoxide on Pt/C electrode on the mechanism of the hydrogen oxidation reaction",
pages = "1382-1375",
number = "4",
volume = "54",
doi = "10.1016/j.electacta.2008.08.067",
url = "https://hdl.handle.net/21.15107/rcub_dais_3485"
}

Elezović, N. R., Gajić Krstajić, L., Radmilović, V. R., Vračar, L.,& Krstajić, N.. (2009). Effect of chemisorbed carbon monoxide on Pt/C electrode on the mechanism of the hydrogen oxidation reaction. in Electrochimica Acta
Elsevier., 54(4), 1375-1382.
https://doi.org/10.1016/j.electacta.2008.08.067
https://hdl.handle.net/21.15107/rcub_dais_3485

Elezović NR, Gajić Krstajić L, Radmilović VR, Vračar L, Krstajić N. Effect of chemisorbed carbon monoxide on Pt/C electrode on the mechanism of the hydrogen oxidation reaction. in Electrochimica Acta. 2009;54(4):1375-1382.
doi:10.1016/j.electacta.2008.08.067
https://hdl.handle.net/21.15107/rcub_dais_3485 .

Elezović, Nevenka R., Gajić Krstajić, Ljiljana, Radmilović, Velimir R., Vračar, Ljiljana, Krstajić, Nedeljko, "Effect of chemisorbed carbon monoxide on Pt/C electrode on the mechanism of the hydrogen oxidation reaction" in Electrochimica Acta, 54, no. 4 (2009):1375-1382,
https://doi.org/10.1016/j.electacta.2008.08.067 .,
https://hdl.handle.net/21.15107/rcub_dais_3485 .

TY  - JOUR
AU  - Elezović, Nevenka R.
AU  - Babić, Biljana M.
AU  - Radmilović, Velimir R.
AU  - Gojković, Snežana Lj.
AU  - Krstajić, Nedeljko V.
AU  - Vračar, Ljiljana M.
PY  - 2008
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1282
AB  - The oxidation of methanol and reduction of oxygen were studied on MoOx-Pt/C nano-catalysts prepared by the polyole method combined by MoOx post-deposition. The catalysts were characterized by TEM and EDX. The presented composition of the electrode is very similar to the nominal ones and post-deposited MoOx species block only a small fraction of the active Pt particle surface area. MoOx deposition on the carbon support can be ruled out from the EDX results and the low mobility of these oxides at corresponding conditions. The electrode catalytic activity in the electrooxidation of methanol and the reduction of oxygen was studied by steady-state voltammetry and cyclic voltammetry. MoOx-Pt/C catalyst exhibits higher catalytic activity than Pt/C for the oxygen reduction. The catalytic effect in oxidation of methanol is achieved only under potentiodynamic conditions, when poisoning species have no enough time to develop fully.
PB  - Elsevier Science Bv, Amsterdam
T2  - Journal of Power Sources
T1  - Pt/C doped by MoOx as the electrocatalyst for oxygen reduction and methanol oxidation
EP  - 255
IS  - 1
SP  - 250
VL  - 175
DO  - 10.1016/j.jpowsour.2007.09.011
ER  - 

@article{
author = "Elezović, Nevenka R. and Babić, Biljana M. and Radmilović, Velimir R. and Gojković, Snežana Lj. and Krstajić, Nedeljko V. and Vračar, Ljiljana M.",
year = "2008",
abstract = "The oxidation of methanol and reduction of oxygen were studied on MoOx-Pt/C nano-catalysts prepared by the polyole method combined by MoOx post-deposition. The catalysts were characterized by TEM and EDX. The presented composition of the electrode is very similar to the nominal ones and post-deposited MoOx species block only a small fraction of the active Pt particle surface area. MoOx deposition on the carbon support can be ruled out from the EDX results and the low mobility of these oxides at corresponding conditions. The electrode catalytic activity in the electrooxidation of methanol and the reduction of oxygen was studied by steady-state voltammetry and cyclic voltammetry. MoOx-Pt/C catalyst exhibits higher catalytic activity than Pt/C for the oxygen reduction. The catalytic effect in oxidation of methanol is achieved only under potentiodynamic conditions, when poisoning species have no enough time to develop fully.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Journal of Power Sources",
title = "Pt/C doped by MoOx as the electrocatalyst for oxygen reduction and methanol oxidation",
pages = "255-250",
number = "1",
volume = "175",
doi = "10.1016/j.jpowsour.2007.09.011"
}

Elezović, N. R., Babić, B. M., Radmilović, V. R., Gojković, S. Lj., Krstajić, N. V.,& Vračar, L. M.. (2008). Pt/C doped by MoOx as the electrocatalyst for oxygen reduction and methanol oxidation. in Journal of Power Sources
Elsevier Science Bv, Amsterdam., 175(1), 250-255.
https://doi.org/10.1016/j.jpowsour.2007.09.011

Elezović NR, Babić BM, Radmilović VR, Gojković SL, Krstajić NV, Vračar LM. Pt/C doped by MoOx as the electrocatalyst for oxygen reduction and methanol oxidation. in Journal of Power Sources. 2008;175(1):250-255.
doi:10.1016/j.jpowsour.2007.09.011 .

Elezović, Nevenka R., Babić, Biljana M., Radmilović, Velimir R., Gojković, Snežana Lj., Krstajić, Nedeljko V., Vračar, Ljiljana M., "Pt/C doped by MoOx as the electrocatalyst for oxygen reduction and methanol oxidation" in Journal of Power Sources, 175, no. 1 (2008):250-255,
https://doi.org/10.1016/j.jpowsour.2007.09.011 . .

TY  - JOUR
AU  - Elezović, Nevenka R.
AU  - Babić, Biljana M.
AU  - Krstajić, Nedeljko V.
AU  - Gojković, Snežana Lj.
AU  - Vračar, Ljiljana M.
PY  - 2008
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1346
AB  - The temperature dependence of oxygen reduction reaction (ORR) was studied on highly dispersed Pt nanoparticles supported on a carbon cryo-gel. The specific surface area of the support was 517 m2 g-1, the Pt particles diameter was about 2.7 nm and the loading of the catalyst was 20 wt.%. The kinetics of the ORR at the Pt/C electrode was examined in 0.50 mol dm-3 HClO4 solution in the temperature range from 274 to 318 K. At all temperatures, two distinct E-log j regions were observed; at low current densities with a slope of -2.3RT/F and at high current densities with a slope of -2.3´2RT/F. In order to confirm the mechanism of oxygen reduction previously suggested at a polycrystalline Pt and a Pt/Ebonex nanostructured electrode, the apparent enthalpies of activation at selected potentials vs. the reversible hydrogen electrode were calculated in both current density regions. Although ∆H ≠a,1  gt  ∆H ≠a,h , it was a,1 a, h found that the enthalpies of activation at the zero Galvani potential difference were the same and hence it could be concluded that the rate-determining step of the ORR was the same in both current density regions. The synthesized Pt/C catalyst showed a small enhancement in the catalytic activity for ORR in comparison to the polycrystalline Pt, but no change in the mechanism of the reaction.
AB  - Kinetika reakcije redukcije kiseonika je ispitivana na nanočesticama platine dispergovanim na ugljeničnom nosaču, u 0,50 mol dm-3 HClO4, u temperaturnom intervalu od 278 do 318 K. Za sintezu Pt katalizatora (Pt/C) je primenjena modifikovana poliol metoda iz rastvora etilen glikola, dok je kao nosač korišćen ugljenični kriogel. Katalizator je okarakterisan primenom BET metode, difrakcije X-zraka (XRD) i transmisione elektronske mikroskopije (TEM). Kinetika reakcije redukcije kiseonika ispitivana je korišćenjem stacionarne polarizacione metode i metode ciklične voltametrije. Oblast malih gustina struje, na svim teperaturama, na krivoj polarizacije, karakteriše vrednost Tafelovog nagiba od -2.3RT/F, dok je u oblasti visokih gustina struje vrednost ovog nagiba -2.3x2RT/F. Određene su vrednosti prividne entalpije aktivacije na konstantnim potencijalima, za obe oblasti gustina struja, i njihova razlika iskazana za nulu Galvanijeve razlike potencijala. Potvrđeno je da je mehanizam redukcije kiseonika, kao i stupanj koji određuje ukupnu brzinu reakcije isti u obe oblasti gustina struja, a da je razlika u kinetici reakcije posledica razlike u zavisnosti adsorpcije reakcionih intermedijara od potencijala. Poređenjem katalitičke aktivnosti, izražene preko gustine struje po realnoj površini katalizatora, konstatovana je nešto veća aktivnost Pt/C katalizatora u odnosu na polikristalnu Pt.
PB  - Serbian Chemical Society, Belgrade
T2  - Journal of the Serbian Chemical Society
T1  - Temperature dependence of the kinetics of oxygen reduction on carbon-supported pt nanoparticles
T1  - Temperaturna zavisnost elektrohemijske redukcije kiseonika na nanočesticama platine na ugljeničnom nosaču
EP  - 654
IS  - 6
SP  - 641
VL  - 73
UR  - https://hdl.handle.net/21.15107/rcub_technorep_1346
ER  - 

@article{
author = "Elezović, Nevenka R. and Babić, Biljana M. and Krstajić, Nedeljko V. and Gojković, Snežana Lj. and Vračar, Ljiljana M.",
year = "2008",
abstract = "The temperature dependence of oxygen reduction reaction (ORR) was studied on highly dispersed Pt nanoparticles supported on a carbon cryo-gel. The specific surface area of the support was 517 m2 g-1, the Pt particles diameter was about 2.7 nm and the loading of the catalyst was 20 wt.%. The kinetics of the ORR at the Pt/C electrode was examined in 0.50 mol dm-3 HClO4 solution in the temperature range from 274 to 318 K. At all temperatures, two distinct E-log j regions were observed; at low current densities with a slope of -2.3RT/F and at high current densities with a slope of -2.3´2RT/F. In order to confirm the mechanism of oxygen reduction previously suggested at a polycrystalline Pt and a Pt/Ebonex nanostructured electrode, the apparent enthalpies of activation at selected potentials vs. the reversible hydrogen electrode were calculated in both current density regions. Although ∆H ≠a,1  gt  ∆H ≠a,h , it was a,1 a, h found that the enthalpies of activation at the zero Galvani potential difference were the same and hence it could be concluded that the rate-determining step of the ORR was the same in both current density regions. The synthesized Pt/C catalyst showed a small enhancement in the catalytic activity for ORR in comparison to the polycrystalline Pt, but no change in the mechanism of the reaction., Kinetika reakcije redukcije kiseonika je ispitivana na nanočesticama platine dispergovanim na ugljeničnom nosaču, u 0,50 mol dm-3 HClO4, u temperaturnom intervalu od 278 do 318 K. Za sintezu Pt katalizatora (Pt/C) je primenjena modifikovana poliol metoda iz rastvora etilen glikola, dok je kao nosač korišćen ugljenični kriogel. Katalizator je okarakterisan primenom BET metode, difrakcije X-zraka (XRD) i transmisione elektronske mikroskopije (TEM). Kinetika reakcije redukcije kiseonika ispitivana je korišćenjem stacionarne polarizacione metode i metode ciklične voltametrije. Oblast malih gustina struje, na svim teperaturama, na krivoj polarizacije, karakteriše vrednost Tafelovog nagiba od -2.3RT/F, dok je u oblasti visokih gustina struje vrednost ovog nagiba -2.3x2RT/F. Određene su vrednosti prividne entalpije aktivacije na konstantnim potencijalima, za obe oblasti gustina struja, i njihova razlika iskazana za nulu Galvanijeve razlike potencijala. Potvrđeno je da je mehanizam redukcije kiseonika, kao i stupanj koji određuje ukupnu brzinu reakcije isti u obe oblasti gustina struja, a da je razlika u kinetici reakcije posledica razlike u zavisnosti adsorpcije reakcionih intermedijara od potencijala. Poređenjem katalitičke aktivnosti, izražene preko gustine struje po realnoj površini katalizatora, konstatovana je nešto veća aktivnost Pt/C katalizatora u odnosu na polikristalnu Pt.",
publisher = "Serbian Chemical Society, Belgrade",
journal = "Journal of the Serbian Chemical Society",
title = "Temperature dependence of the kinetics of oxygen reduction on carbon-supported pt nanoparticles, Temperaturna zavisnost elektrohemijske redukcije kiseonika na nanočesticama platine na ugljeničnom nosaču",
pages = "654-641",
number = "6",
volume = "73",
url = "https://hdl.handle.net/21.15107/rcub_technorep_1346"
}

Elezović, N. R., Babić, B. M., Krstajić, N. V., Gojković, S. Lj.,& Vračar, L. M.. (2008). Temperature dependence of the kinetics of oxygen reduction on carbon-supported pt nanoparticles. in Journal of the Serbian Chemical Society
Serbian Chemical Society, Belgrade., 73(6), 641-654.
https://hdl.handle.net/21.15107/rcub_technorep_1346

Elezović NR, Babić BM, Krstajić NV, Gojković SL, Vračar LM. Temperature dependence of the kinetics of oxygen reduction on carbon-supported pt nanoparticles. in Journal of the Serbian Chemical Society. 2008;73(6):641-654.
https://hdl.handle.net/21.15107/rcub_technorep_1346 .

Elezović, Nevenka R., Babić, Biljana M., Krstajić, Nedeljko V., Gojković, Snežana Lj., Vračar, Ljiljana M., "Temperature dependence of the kinetics of oxygen reduction on carbon-supported pt nanoparticles" in Journal of the Serbian Chemical Society, 73, no. 6 (2008):641-654,
https://hdl.handle.net/21.15107/rcub_technorep_1346 .

TY  - JOUR
AU  - Elezović, Nevenka R.
AU  - Babić, Biljana M.
AU  - Vracar, L. J. M.
AU  - Krstajić, Nedeljko V.
PY  - 2007
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5493
AB  - The oxygen reduction reaction was investigated in 0.1 M NaOH solution, on a porous coated electrode formed of Pt particles supported on carbon cryogel. The Pt/C catalyst was characterized by the X-ray diffraction (XRD), transmission electron microscopy (TEM) and cyclic voltammetry techniques. The results demonstrated a successful reduction of Pt to metallic form and homogenous Pt particle size distribution with a mean particle size of about 2.7 nm. The ORR kinetics was investigated by linear sweep polarization at a rotating disc electrode. The results showed the existence of two E - log j regions, usually referred to polycrystalline Pt in acid and alkaline solution. At low Current densities (led), the Tafel slope was found to be close to -2.3RT/F, while at high current densities (bed) it was found to be close to -2x2.3RT/F. It is proposed that the main path in the ORR mechanism on Pt particles was the direct four-electron process, with the transfer of the first electron as the rate determining step. If the activities are expressed through the specific current densities, a small enhancement of the catalytic activity for Pt/C was observed compared to that of polycrystalline Pt. The effect of the Pt particle size on the electrocatalysis of oxygen reduction was ascribed to the predominant (111) facets of the platinum crystallites.
PB  - Srpsko hemijsko društvo, Beograd
T2  - Journal of the Serbian Chemical Society
T1  - Oxygen reduction at platinum nanoparticles supported on carbon cryogel in alkaline solution
EP  - 708
IS  - 7
SP  - 699
VL  - 72
DO  - 10.2298/JSC0707699E
ER  - 

@article{
author = "Elezović, Nevenka R. and Babić, Biljana M. and Vracar, L. J. M. and Krstajić, Nedeljko V.",
year = "2007",
abstract = "The oxygen reduction reaction was investigated in 0.1 M NaOH solution, on a porous coated electrode formed of Pt particles supported on carbon cryogel. The Pt/C catalyst was characterized by the X-ray diffraction (XRD), transmission electron microscopy (TEM) and cyclic voltammetry techniques. The results demonstrated a successful reduction of Pt to metallic form and homogenous Pt particle size distribution with a mean particle size of about 2.7 nm. The ORR kinetics was investigated by linear sweep polarization at a rotating disc electrode. The results showed the existence of two E - log j regions, usually referred to polycrystalline Pt in acid and alkaline solution. At low Current densities (led), the Tafel slope was found to be close to -2.3RT/F, while at high current densities (bed) it was found to be close to -2x2.3RT/F. It is proposed that the main path in the ORR mechanism on Pt particles was the direct four-electron process, with the transfer of the first electron as the rate determining step. If the activities are expressed through the specific current densities, a small enhancement of the catalytic activity for Pt/C was observed compared to that of polycrystalline Pt. The effect of the Pt particle size on the electrocatalysis of oxygen reduction was ascribed to the predominant (111) facets of the platinum crystallites.",
publisher = "Srpsko hemijsko društvo, Beograd",
journal = "Journal of the Serbian Chemical Society",
title = "Oxygen reduction at platinum nanoparticles supported on carbon cryogel in alkaline solution",
pages = "708-699",
number = "7",
volume = "72",
doi = "10.2298/JSC0707699E"
}

Elezović, N. R., Babić, B. M., Vracar, L. J. M.,& Krstajić, N. V.. (2007). Oxygen reduction at platinum nanoparticles supported on carbon cryogel in alkaline solution. in Journal of the Serbian Chemical Society
Srpsko hemijsko društvo, Beograd., 72(7), 699-708.
https://doi.org/10.2298/JSC0707699E

Elezović NR, Babić BM, Vracar LJM, Krstajić NV. Oxygen reduction at platinum nanoparticles supported on carbon cryogel in alkaline solution. in Journal of the Serbian Chemical Society. 2007;72(7):699-708.
doi:10.2298/JSC0707699E .

Elezović, Nevenka R., Babić, Biljana M., Vracar, L. J. M., Krstajić, Nedeljko V., "Oxygen reduction at platinum nanoparticles supported on carbon cryogel in alkaline solution" in Journal of the Serbian Chemical Society, 72, no. 7 (2007):699-708,
https://doi.org/10.2298/JSC0707699E . .

TY  - JOUR
AU  - Elezović, Nevenka
AU  - Babić, Biljana M.
AU  - Krstajić, Nedeljko
AU  - Gajić Krstajić, Ljiljana
AU  - Vračar, Ljiljana
PY  - 2007
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5497
AB  - Home-made carbon cryogel synthesized by sol-gel polycondensation and freeze-drying is used as support for preparation of highly dispersed Pt catalyst that is made by a modified polyol synthesis method in an ethylene glycol (EG) solution. Specific surface area of carbon support and Pt/C catalyst is determined from nitrogen adsorption isotherm. The adsorption isotherm demonstrates a significant mesoporosity of carbon support. Specific surface area of the carbon support, calculated by the BET equation, is found to be 573 m(2) g(-1). X-ray diffraction (XRD) results demonstrate a successful reduction of the Pt precursor to its metallic form, and transmission electron microscopy (TEM) images show very uniform Pt particle size distribution with mean particle size of about 2.7 +/- 0.7 nm of the catalyst. Potentiodynamic studies of the underpotential deposition of hydrogen (H-upd) on Pt/C electrode in 0.5 mol dm(-3) HClO4 aqueous solution in the temperature range from 274 to 318 K are made, and thermodynamic state functions for the hydrogen adsorption are determined. The experimental results are analyzed assuming linear variation of the Gibbs energy of adsorption versus theta H-upd on the basis of the surface heterogeneity. The increase of Delta G(Hupd)(theta) with the surface coverage indicates the repulsive interactions between H-upd adatoms. From the temperature dependence of the Gibbs energy of adsorption, the enthalpy and the entropy of adsorption are calculated. The values of these functions are determined to be Delta H-Hupd(theta=0) = -5.6 kJ mol(-1) and Delta S-Hupd(theta=0) = 69.1 J mol(-1) K-1 The value of Delta H-Hupd(theta) allows determinations of the bond energy between electrode surface and H-upd that is found to be Ept-H = 223 kJ mol(-1) for theta = 0.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - International Journal of Hydrogen Energy
T1  - Specificity of the UPD of H to the structure of highly dispersed Pt on carbon support
EP  - 1998
IS  - 12
SP  - 1991
VL  - 32
DO  - 10.1016/j.ijhydene.2006.09.042
UR  - https://hdl.handle.net/21.15107/rcub_dais_12884
ER  - 

@article{
author = "Elezović, Nevenka and Babić, Biljana M. and Krstajić, Nedeljko and Gajić Krstajić, Ljiljana and Vračar, Ljiljana",
year = "2007",
abstract = "Home-made carbon cryogel synthesized by sol-gel polycondensation and freeze-drying is used as support for preparation of highly dispersed Pt catalyst that is made by a modified polyol synthesis method in an ethylene glycol (EG) solution. Specific surface area of carbon support and Pt/C catalyst is determined from nitrogen adsorption isotherm. The adsorption isotherm demonstrates a significant mesoporosity of carbon support. Specific surface area of the carbon support, calculated by the BET equation, is found to be 573 m(2) g(-1). X-ray diffraction (XRD) results demonstrate a successful reduction of the Pt precursor to its metallic form, and transmission electron microscopy (TEM) images show very uniform Pt particle size distribution with mean particle size of about 2.7 +/- 0.7 nm of the catalyst. Potentiodynamic studies of the underpotential deposition of hydrogen (H-upd) on Pt/C electrode in 0.5 mol dm(-3) HClO4 aqueous solution in the temperature range from 274 to 318 K are made, and thermodynamic state functions for the hydrogen adsorption are determined. The experimental results are analyzed assuming linear variation of the Gibbs energy of adsorption versus theta H-upd on the basis of the surface heterogeneity. The increase of Delta G(Hupd)(theta) with the surface coverage indicates the repulsive interactions between H-upd adatoms. From the temperature dependence of the Gibbs energy of adsorption, the enthalpy and the entropy of adsorption are calculated. The values of these functions are determined to be Delta H-Hupd(theta=0) = -5.6 kJ mol(-1) and Delta S-Hupd(theta=0) = 69.1 J mol(-1) K-1 The value of Delta H-Hupd(theta) allows determinations of the bond energy between electrode surface and H-upd that is found to be Ept-H = 223 kJ mol(-1) for theta = 0.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "International Journal of Hydrogen Energy",
title = "Specificity of the UPD of H to the structure of highly dispersed Pt on carbon support",
pages = "1998-1991",
number = "12",
volume = "32",
doi = "10.1016/j.ijhydene.2006.09.042",
url = "https://hdl.handle.net/21.15107/rcub_dais_12884"
}

Elezović, N., Babić, B. M., Krstajić, N., Gajić Krstajić, L.,& Vračar, L.. (2007). Specificity of the UPD of H to the structure of highly dispersed Pt on carbon support. in International Journal of Hydrogen Energy
Pergamon-Elsevier Science Ltd, Oxford., 32(12), 1991-1998.
https://doi.org/10.1016/j.ijhydene.2006.09.042
https://hdl.handle.net/21.15107/rcub_dais_12884

Elezović N, Babić BM, Krstajić N, Gajić Krstajić L, Vračar L. Specificity of the UPD of H to the structure of highly dispersed Pt on carbon support. in International Journal of Hydrogen Energy. 2007;32(12):1991-1998.
doi:10.1016/j.ijhydene.2006.09.042
https://hdl.handle.net/21.15107/rcub_dais_12884 .

Elezović, Nevenka, Babić, Biljana M., Krstajić, Nedeljko, Gajić Krstajić, Ljiljana, Vračar, Ljiljana, "Specificity of the UPD of H to the structure of highly dispersed Pt on carbon support" in International Journal of Hydrogen Energy, 32, no. 12 (2007):1991-1998,
https://doi.org/10.1016/j.ijhydene.2006.09.042 .,
https://hdl.handle.net/21.15107/rcub_dais_12884 .

TY  - JOUR
AU  - Vračar, Ljiljana M.
AU  - Gojković, Snežana Lj.
AU  - Elezović, Nevenka R.
AU  - Radmilović, Velimir R.
AU  - Jaksić, M. M.
AU  - Krstajić, Nedeljko V.
PY  - 2006
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/871
AB  - The impregnation method has been applied to synthesize platinum nanoparticles on Magneli phase titanium oxide powder (Ebonex). Surface area of the Ebonex support was determined by BET technique. Distribution and morphology of Pt nanoparticles in Ebonex/Pt catalyst were analyzed by TEM and HRTEM technique. Rather uniformly dispersed, Pt particles Of 5 +/- 3 nm were observed. The catalyst was tested for oxygen reduction and methanol oxidation in alkaline solution. It was found that in whole potential range oxygen was reduced with four electron exchanged and that the transfer of the first electron was the rate determining step. The kinetics of oxygen reduction on Ebonex/Pt can be described by the same equations as on polycrystalline Pt. When the activities were expressed through the specific current densities, no enhancement for Ebonex/Pt was observed comparing with polycrystalline Pt. Kinetic parameters and specific activity of the methanol oxidation on Ebonex/Pt,was found to be similar to those on polycrystalline Pt as well as to literature data for Pt nanoparticles on other supporting,materials. The Results: for, both reactions investigated indicate that Ebonex does not increase the activity of Pt significantly, bat can serve as a suitable supporting material for nanoparticles in fuel cell catalysts.
T2  - Journal of New Materials for Electrochemical Systems
T1  - Magneli phase titanium oxides as catalyst support - Electrochemical behavior of Ebonex/Pt catalysts
EP  - 106
IS  - 2
SP  - 99
VL  - 9
UR  - https://hdl.handle.net/21.15107/rcub_technorep_871
ER  - 

@article{
author = "Vračar, Ljiljana M. and Gojković, Snežana Lj. and Elezović, Nevenka R. and Radmilović, Velimir R. and Jaksić, M. M. and Krstajić, Nedeljko V.",
year = "2006",
abstract = "The impregnation method has been applied to synthesize platinum nanoparticles on Magneli phase titanium oxide powder (Ebonex). Surface area of the Ebonex support was determined by BET technique. Distribution and morphology of Pt nanoparticles in Ebonex/Pt catalyst were analyzed by TEM and HRTEM technique. Rather uniformly dispersed, Pt particles Of 5 +/- 3 nm were observed. The catalyst was tested for oxygen reduction and methanol oxidation in alkaline solution. It was found that in whole potential range oxygen was reduced with four electron exchanged and that the transfer of the first electron was the rate determining step. The kinetics of oxygen reduction on Ebonex/Pt can be described by the same equations as on polycrystalline Pt. When the activities were expressed through the specific current densities, no enhancement for Ebonex/Pt was observed comparing with polycrystalline Pt. Kinetic parameters and specific activity of the methanol oxidation on Ebonex/Pt,was found to be similar to those on polycrystalline Pt as well as to literature data for Pt nanoparticles on other supporting,materials. The Results: for, both reactions investigated indicate that Ebonex does not increase the activity of Pt significantly, bat can serve as a suitable supporting material for nanoparticles in fuel cell catalysts.",
journal = "Journal of New Materials for Electrochemical Systems",
title = "Magneli phase titanium oxides as catalyst support - Electrochemical behavior of Ebonex/Pt catalysts",
pages = "106-99",
number = "2",
volume = "9",
url = "https://hdl.handle.net/21.15107/rcub_technorep_871"
}

Vračar, L. M., Gojković, S. Lj., Elezović, N. R., Radmilović, V. R., Jaksić, M. M.,& Krstajić, N. V.. (2006). Magneli phase titanium oxides as catalyst support - Electrochemical behavior of Ebonex/Pt catalysts. in Journal of New Materials for Electrochemical Systems, 9(2), 99-106.
https://hdl.handle.net/21.15107/rcub_technorep_871

Vračar LM, Gojković SL, Elezović NR, Radmilović VR, Jaksić MM, Krstajić NV. Magneli phase titanium oxides as catalyst support - Electrochemical behavior of Ebonex/Pt catalysts. in Journal of New Materials for Electrochemical Systems. 2006;9(2):99-106.
https://hdl.handle.net/21.15107/rcub_technorep_871 .

Vračar, Ljiljana M., Gojković, Snežana Lj., Elezović, Nevenka R., Radmilović, Velimir R., Jaksić, M. M., Krstajić, Nedeljko V., "Magneli phase titanium oxides as catalyst support - Electrochemical behavior of Ebonex/Pt catalysts" in Journal of New Materials for Electrochemical Systems, 9, no. 2 (2006):99-106,
https://hdl.handle.net/21.15107/rcub_technorep_871 .

TY  - JOUR
AU  - Grgur, Branimir
AU  - Krstajić, Nedeljko V.
AU  - Elezović, Nevenka R.
AU  - Jović, Vladimir D.
PY  - 2005
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/776
AB  - Fe–Mo alloys were electrodeposited from a pyrophosphate bath using a single diode rectified AC current. Their composition and morphology were investigated by SEM, optical microscopy and EDS, in order to determine the influence of the deposition conditions on the morphology and composition of these alloys. It was shown that the electrodeposition parameters, such as chemical bath composition and current density, influenced both the composition of the Fe–Mo alloys and the current efficiency for their deposition, while the micro and macro-morphology did not change significantly with changing conditions of alloy electrodeposition. It was found that the electrodeposited Fe–Mo alloys possessed a 0.15 V to 0.30 V lower overvoltage than mild steel for hydrogen evolution in an electrolyte commonly used in commercial chlorate production, depending on the alloy composition, i.e., the conditions of alloy electrodeposition.
AB  - Fe–Mo legure su elektrohemijski taložene iz pirofosfatnog kupatila korišćenjem periodično promeljivog AC strujnog režima. Sastav i morfologija dobijenih taloga ispitivani su SEM i EDS tehnikama, dok je poprečni presek uzoraka ispitivan optičkom mikroskopijom, sa ciljem da se odredi uticaj uslova taloženja na morfologiju i sastav legura. Pokazano je da uslovi taloženja sastav kupatila i gustina struje taloženja, praktič no ne utiču na morfologiju legura, ali da utiču na sastav legura i na iskorišćenje struje njihovog taloženja. Takođe je pokazano da istaložene Fe–Mo legure posedujumanju prenapetost za reakciju izdvajanja vodonika od mekog čelika (0,15 V do 0,30 V u zavisnosti od uslova taloženja) koji se koristi kao katoda u industrijskim postrojenjima za proizvodnju hlorata, ukazujući da se elektrohemijski istaložene Fe–Mo legure mogu koristiti kao katalitički aktivne katode u ovom procesu.
PB  - Serbian Chemical Society, Belgrade
T2  - Journal of the Serbian Chemical Society
T1  - Electrodeposition and characterization of Fe-Mo alloys as cathodes for hydrogen evolution in the process of chlorate production
T1  - Elektrohemijsko taloženje i karakterizacija Fe-Mo legura kao katoda za reakciju izdvajanja vodonika u industrijskom procesu proizvodnje hlorata
EP  - 889
IS  - 6
SP  - 879
VL  - 70
UR  - https://hdl.handle.net/21.15107/rcub_technorep_776
ER  - 

@article{
author = "Grgur, Branimir and Krstajić, Nedeljko V. and Elezović, Nevenka R. and Jović, Vladimir D.",
year = "2005",
abstract = "Fe–Mo alloys were electrodeposited from a pyrophosphate bath using a single diode rectified AC current. Their composition and morphology were investigated by SEM, optical microscopy and EDS, in order to determine the influence of the deposition conditions on the morphology and composition of these alloys. It was shown that the electrodeposition parameters, such as chemical bath composition and current density, influenced both the composition of the Fe–Mo alloys and the current efficiency for their deposition, while the micro and macro-morphology did not change significantly with changing conditions of alloy electrodeposition. It was found that the electrodeposited Fe–Mo alloys possessed a 0.15 V to 0.30 V lower overvoltage than mild steel for hydrogen evolution in an electrolyte commonly used in commercial chlorate production, depending on the alloy composition, i.e., the conditions of alloy electrodeposition., Fe–Mo legure su elektrohemijski taložene iz pirofosfatnog kupatila korišćenjem periodično promeljivog AC strujnog režima. Sastav i morfologija dobijenih taloga ispitivani su SEM i EDS tehnikama, dok je poprečni presek uzoraka ispitivan optičkom mikroskopijom, sa ciljem da se odredi uticaj uslova taloženja na morfologiju i sastav legura. Pokazano je da uslovi taloženja sastav kupatila i gustina struje taloženja, praktič no ne utiču na morfologiju legura, ali da utiču na sastav legura i na iskorišćenje struje njihovog taloženja. Takođe je pokazano da istaložene Fe–Mo legure posedujumanju prenapetost za reakciju izdvajanja vodonika od mekog čelika (0,15 V do 0,30 V u zavisnosti od uslova taloženja) koji se koristi kao katoda u industrijskim postrojenjima za proizvodnju hlorata, ukazujući da se elektrohemijski istaložene Fe–Mo legure mogu koristiti kao katalitički aktivne katode u ovom procesu.",
publisher = "Serbian Chemical Society, Belgrade",
journal = "Journal of the Serbian Chemical Society",
title = "Electrodeposition and characterization of Fe-Mo alloys as cathodes for hydrogen evolution in the process of chlorate production, Elektrohemijsko taloženje i karakterizacija Fe-Mo legura kao katoda za reakciju izdvajanja vodonika u industrijskom procesu proizvodnje hlorata",
pages = "889-879",
number = "6",
volume = "70",
url = "https://hdl.handle.net/21.15107/rcub_technorep_776"
}

Grgur, B., Krstajić, N. V., Elezović, N. R.,& Jović, V. D.. (2005). Electrodeposition and characterization of Fe-Mo alloys as cathodes for hydrogen evolution in the process of chlorate production. in Journal of the Serbian Chemical Society
Serbian Chemical Society, Belgrade., 70(6), 879-889.
https://hdl.handle.net/21.15107/rcub_technorep_776

Grgur B, Krstajić NV, Elezović NR, Jović VD. Electrodeposition and characterization of Fe-Mo alloys as cathodes for hydrogen evolution in the process of chlorate production. in Journal of the Serbian Chemical Society. 2005;70(6):879-889.
https://hdl.handle.net/21.15107/rcub_technorep_776 .

Grgur, Branimir, Krstajić, Nedeljko V., Elezović, Nevenka R., Jović, Vladimir D., "Electrodeposition and characterization of Fe-Mo alloys as cathodes for hydrogen evolution in the process of chlorate production" in Journal of the Serbian Chemical Society, 70, no. 6 (2005):879-889,
https://hdl.handle.net/21.15107/rcub_technorep_776 .

TY  - JOUR
AU  - Elezović, Nevenka R.
AU  - Jović, Vladimir D
AU  - Krstajić, Nedeljko V.
PY  - 2005
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5461
AB  - The mechanism and kinetics of the hydrogen evolution reaction were studied. in 1.0 mol dm(-3) NaOH solution on Fe-Mo alloy electrodes prepared by electrodeposition at constant current densities from a pyrophosphate bath. A series of electrode containing 34-59 at.% Mo was prepared. Electrodes displayed porous character, and electrochemical impedance spectroscopy was used to characterized real surface area. It was found that within the whole potential region the mechanism of the HER is a consecutive combination of the Volmer step, followed dominantly by a rate controlling Heyrovsky step, while the contribution of the parallel Tafel step is negligible. The kinetic parameters of the HER were determined. With an increase in the molybdenum content, the electrodes become more active, and an increase in the real surface area is observed. The main factor influencing the electrode activity seems to be the real surface area.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Electrochimica Acta
T1  - Kinetics of the hydrogen evolution reaction on Fe-Mo film deposited on mild steel support in alkaline solution
EP  - 5601
IS  - 28
SP  - 5594
VL  - 50
DO  - 10.1016/j.electacta.2005.03.037
ER  - 

@article{
author = "Elezović, Nevenka R. and Jović, Vladimir D and Krstajić, Nedeljko V.",
year = "2005",
abstract = "The mechanism and kinetics of the hydrogen evolution reaction were studied. in 1.0 mol dm(-3) NaOH solution on Fe-Mo alloy electrodes prepared by electrodeposition at constant current densities from a pyrophosphate bath. A series of electrode containing 34-59 at.% Mo was prepared. Electrodes displayed porous character, and electrochemical impedance spectroscopy was used to characterized real surface area. It was found that within the whole potential region the mechanism of the HER is a consecutive combination of the Volmer step, followed dominantly by a rate controlling Heyrovsky step, while the contribution of the parallel Tafel step is negligible. The kinetic parameters of the HER were determined. With an increase in the molybdenum content, the electrodes become more active, and an increase in the real surface area is observed. The main factor influencing the electrode activity seems to be the real surface area.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Electrochimica Acta",
title = "Kinetics of the hydrogen evolution reaction on Fe-Mo film deposited on mild steel support in alkaline solution",
pages = "5601-5594",
number = "28",
volume = "50",
doi = "10.1016/j.electacta.2005.03.037"
}

Elezović, N. R., Jović, V. D.,& Krstajić, N. V.. (2005). Kinetics of the hydrogen evolution reaction on Fe-Mo film deposited on mild steel support in alkaline solution. in Electrochimica Acta
Pergamon-Elsevier Science Ltd, Oxford., 50(28), 5594-5601.
https://doi.org/10.1016/j.electacta.2005.03.037

Elezović NR, Jović VD, Krstajić NV. Kinetics of the hydrogen evolution reaction on Fe-Mo film deposited on mild steel support in alkaline solution. in Electrochimica Acta. 2005;50(28):5594-5601.
doi:10.1016/j.electacta.2005.03.037 .

Elezović, Nevenka R., Jović, Vladimir D, Krstajić, Nedeljko V., "Kinetics of the hydrogen evolution reaction on Fe-Mo film deposited on mild steel support in alkaline solution" in Electrochimica Acta, 50, no. 28 (2005):5594-5601,
https://doi.org/10.1016/j.electacta.2005.03.037 . .