TY  - JOUR
AU  - Kalebić, Barbara
AU  - Pavlovic, Jelena
AU  - Dikić, Jelena
AU  - Recnik, Aleksander
AU  - Gyergyek, Saso
AU  - Skoro, Nikola
AU  - Rajić, Nevenka
PY  - 2021
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4925
AB  - The adsorption of the antibiotic ciprofloxacin (CIP) from an aqueous solution by natural zeolite, the calcium-rich clinoptilolite (CLI), and magnetite-coated CLI (MAG-CLI) was investigated. Both CLI and MAG-CLI showed a high adsorption affinity towards CIP at 283, 288 and 293 K at a pH of 5. Adsorption kinetics studied for the initial concentrations of 15-75 mg CIP dm(-3) follow Lagergren's pseudo-second order equation and the adsorption is best represented by the Langmuir model. The adsorption mechanism involves strong electrostatic interactions between negatively charged aluminosilicate lattice and the cationic form of CIP accompanied by an ion-exchange reaction. Magnetite coverage (approx. 12 wt.%) induces magnetism, which can facilitate the separation process. The coverage does not influence the adsorption activity of CLI. The leaching test showed that the MAG coating protects the adsorbent from CIP leaching. This is ascribed to interactions between the CIP carboxyl groups and magnetite nano-particles. Antibacterial tests showed strong antibacterial activity of the ciprofloxacin-containing adsorbents towards pathogenic E. coli and S. aureus.
T2  - Minerals
T1  - Use of Natural Clinoptilolite in the Preparation of an Efficient Adsorbent for Ciprofloxacin Removal from Aqueous Media
IS  - 5
VL  - 11
DO  - 10.3390/min11050518
ER  - 

@article{
author = "Kalebić, Barbara and Pavlovic, Jelena and Dikić, Jelena and Recnik, Aleksander and Gyergyek, Saso and Skoro, Nikola and Rajić, Nevenka",
year = "2021",
abstract = "The adsorption of the antibiotic ciprofloxacin (CIP) from an aqueous solution by natural zeolite, the calcium-rich clinoptilolite (CLI), and magnetite-coated CLI (MAG-CLI) was investigated. Both CLI and MAG-CLI showed a high adsorption affinity towards CIP at 283, 288 and 293 K at a pH of 5. Adsorption kinetics studied for the initial concentrations of 15-75 mg CIP dm(-3) follow Lagergren's pseudo-second order equation and the adsorption is best represented by the Langmuir model. The adsorption mechanism involves strong electrostatic interactions between negatively charged aluminosilicate lattice and the cationic form of CIP accompanied by an ion-exchange reaction. Magnetite coverage (approx. 12 wt.%) induces magnetism, which can facilitate the separation process. The coverage does not influence the adsorption activity of CLI. The leaching test showed that the MAG coating protects the adsorbent from CIP leaching. This is ascribed to interactions between the CIP carboxyl groups and magnetite nano-particles. Antibacterial tests showed strong antibacterial activity of the ciprofloxacin-containing adsorbents towards pathogenic E. coli and S. aureus.",
journal = "Minerals",
title = "Use of Natural Clinoptilolite in the Preparation of an Efficient Adsorbent for Ciprofloxacin Removal from Aqueous Media",
number = "5",
volume = "11",
doi = "10.3390/min11050518"
}

Kalebić, B., Pavlovic, J., Dikić, J., Recnik, A., Gyergyek, S., Skoro, N.,& Rajić, N.. (2021). Use of Natural Clinoptilolite in the Preparation of an Efficient Adsorbent for Ciprofloxacin Removal from Aqueous Media. in Minerals, 11(5).
https://doi.org/10.3390/min11050518

Kalebić B, Pavlovic J, Dikić J, Recnik A, Gyergyek S, Skoro N, Rajić N. Use of Natural Clinoptilolite in the Preparation of an Efficient Adsorbent for Ciprofloxacin Removal from Aqueous Media. in Minerals. 2021;11(5).
doi:10.3390/min11050518 .

Kalebić, Barbara, Pavlovic, Jelena, Dikić, Jelena, Recnik, Aleksander, Gyergyek, Saso, Skoro, Nikola, Rajić, Nevenka, "Use of Natural Clinoptilolite in the Preparation of an Efficient Adsorbent for Ciprofloxacin Removal from Aqueous Media" in Minerals, 11, no. 5 (2021),
https://doi.org/10.3390/min11050518 . .

TY  - JOUR
AU  - Kaplanec, Iva
AU  - Recnik, Aleksander
AU  - Mali, Gregor
AU  - Rajić, Nevenka
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3581
AB  - Clinoptilolite-rich tuff (Z) enriched with Fe(III) was studied in the removal of phosphate ions present in aqueous medium at pH = 6.5. Fe(III) modification was performed by a simple wet impregnation giving the product (FeZ) with about 18 wt% Fe. Transmission electron microscopy showed the presence of a flaky Fe(III) amorphous precipitate on the clinoptilolite sheets and a preserved clinoptilolite crystallinity. The modification increased the specific surface area from 28.6 to 140.3 m(2) g(-1). FeZ effectively adsorbed phosphate, the removal rate at 298 K varying from 86% to 42.5% (for C-0 = 50 mg dm(-3) and C-0 = 400 mg dm(-3)). The sorption isotherms were in accord with the Langmuir model, giving for the Langmuir constant (R-L) values in the range 0-1 that are characteristic of a favourable adsorption. The data for adsorption kinetics were best described by the pseudo-second-order model suggesting chemisorption as the phosphate sorption mechanism. Intra-particle diffusion was present in the adsorption, but it was not the rate-limiting step. A P-31 static spin-echo mapping nuclear magnetic resonance (NMR) measurement was performed for studying the phosphate-FeZ interaction. The results showed that the phosphate adsorption on FeZ proceeds through electrostatic interactions and covalent bonding, the latter being more pronounced.
PB  - Desalination Publ, Hopkinton
T2  - Desalination and Water Treatment
T1  - Study of the iron(III)-modified clinoptilolite in the adsorption of phosphate from aqueous medium: mechanism and kinetics
EP  - 240
SP  - 231
VL  - 78
DO  - 10.5004/dwt.2017.20875
ER  - 

@article{
author = "Kaplanec, Iva and Recnik, Aleksander and Mali, Gregor and Rajić, Nevenka",
year = "2017",
abstract = "Clinoptilolite-rich tuff (Z) enriched with Fe(III) was studied in the removal of phosphate ions present in aqueous medium at pH = 6.5. Fe(III) modification was performed by a simple wet impregnation giving the product (FeZ) with about 18 wt% Fe. Transmission electron microscopy showed the presence of a flaky Fe(III) amorphous precipitate on the clinoptilolite sheets and a preserved clinoptilolite crystallinity. The modification increased the specific surface area from 28.6 to 140.3 m(2) g(-1). FeZ effectively adsorbed phosphate, the removal rate at 298 K varying from 86% to 42.5% (for C-0 = 50 mg dm(-3) and C-0 = 400 mg dm(-3)). The sorption isotherms were in accord with the Langmuir model, giving for the Langmuir constant (R-L) values in the range 0-1 that are characteristic of a favourable adsorption. The data for adsorption kinetics were best described by the pseudo-second-order model suggesting chemisorption as the phosphate sorption mechanism. Intra-particle diffusion was present in the adsorption, but it was not the rate-limiting step. A P-31 static spin-echo mapping nuclear magnetic resonance (NMR) measurement was performed for studying the phosphate-FeZ interaction. The results showed that the phosphate adsorption on FeZ proceeds through electrostatic interactions and covalent bonding, the latter being more pronounced.",
publisher = "Desalination Publ, Hopkinton",
journal = "Desalination and Water Treatment",
title = "Study of the iron(III)-modified clinoptilolite in the adsorption of phosphate from aqueous medium: mechanism and kinetics",
pages = "240-231",
volume = "78",
doi = "10.5004/dwt.2017.20875"
}

Kaplanec, I., Recnik, A., Mali, G.,& Rajić, N.. (2017). Study of the iron(III)-modified clinoptilolite in the adsorption of phosphate from aqueous medium: mechanism and kinetics. in Desalination and Water Treatment
Desalination Publ, Hopkinton., 78, 231-240.
https://doi.org/10.5004/dwt.2017.20875

Kaplanec I, Recnik A, Mali G, Rajić N. Study of the iron(III)-modified clinoptilolite in the adsorption of phosphate from aqueous medium: mechanism and kinetics. in Desalination and Water Treatment. 2017;78:231-240.
doi:10.5004/dwt.2017.20875 .

Kaplanec, Iva, Recnik, Aleksander, Mali, Gregor, Rajić, Nevenka, "Study of the iron(III)-modified clinoptilolite in the adsorption of phosphate from aqueous medium: mechanism and kinetics" in Desalination and Water Treatment, 78 (2017):231-240,
https://doi.org/10.5004/dwt.2017.20875 . .

TY  - JOUR
AU  - Jevtić, Sanja
AU  - Arcon, Iztok
AU  - Recnik, Aleksander
AU  - Babić, Biljana M.
AU  - Mazaj, Matjaz
AU  - Pavlović, Jelena
AU  - Matijasević, Danka
AU  - Nikšić, Miomir
AU  - Rajić, Nevenka
PY  - 2014
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2662
AB  - Se(IV) and Se(VI) anions are the dominant species of Se existing in aqueous systems. In this study, the iron(III)-modified natural zeolitic tuff (Fe-CLI) from the Serbian deposit Zlatokop has been investigated as an adsorbent for the Se oxyanions. Fe-CLI shows adsorption activity for both Se(IV) and Se(VI) which decreases with increasing pH. The adsorption capacity of Fe-CLI is found to be higher for Se(IV) than for Se(VI). Kinetics data follow the pseudo-second-order model and the obtained parameters k indicate that the rates of adsorption and desorption are higher for Se(VI). Extended X-ray absorption fine structure (EXAFS) and X-ray absorption near edge structure (XANES) analyses reveal that Se is bound at the zeolite surface forming not only the Se-O-Fe but also Se-O-Si bonds. The adsorption mechanism depends of the type of oxo ions. Samples of zeolitic tuff which contain Se were tested as soil supplements for the cultivation of Pleurotus ostreatus mushrooms. The fungus adsorbed the inorganic Se from zeolitic tuff transforming it to a more valuable organically bound form.
PB  - Elsevier, Amsterdam
T2  - Microporous and Mesoporous Materials
T1  - The iron(III)-modified natural zeolitic tuff as an adsorbent and carrier for selenium oxyanions
EP  - 100
SP  - 92
VL  - 197
DO  - 10.1016/j.micromeso.2014.06.008
ER  - 

@article{
author = "Jevtić, Sanja and Arcon, Iztok and Recnik, Aleksander and Babić, Biljana M. and Mazaj, Matjaz and Pavlović, Jelena and Matijasević, Danka and Nikšić, Miomir and Rajić, Nevenka",
year = "2014",
abstract = "Se(IV) and Se(VI) anions are the dominant species of Se existing in aqueous systems. In this study, the iron(III)-modified natural zeolitic tuff (Fe-CLI) from the Serbian deposit Zlatokop has been investigated as an adsorbent for the Se oxyanions. Fe-CLI shows adsorption activity for both Se(IV) and Se(VI) which decreases with increasing pH. The adsorption capacity of Fe-CLI is found to be higher for Se(IV) than for Se(VI). Kinetics data follow the pseudo-second-order model and the obtained parameters k indicate that the rates of adsorption and desorption are higher for Se(VI). Extended X-ray absorption fine structure (EXAFS) and X-ray absorption near edge structure (XANES) analyses reveal that Se is bound at the zeolite surface forming not only the Se-O-Fe but also Se-O-Si bonds. The adsorption mechanism depends of the type of oxo ions. Samples of zeolitic tuff which contain Se were tested as soil supplements for the cultivation of Pleurotus ostreatus mushrooms. The fungus adsorbed the inorganic Se from zeolitic tuff transforming it to a more valuable organically bound form.",
publisher = "Elsevier, Amsterdam",
journal = "Microporous and Mesoporous Materials",
title = "The iron(III)-modified natural zeolitic tuff as an adsorbent and carrier for selenium oxyanions",
pages = "100-92",
volume = "197",
doi = "10.1016/j.micromeso.2014.06.008"
}

Jevtić, S., Arcon, I., Recnik, A., Babić, B. M., Mazaj, M., Pavlović, J., Matijasević, D., Nikšić, M.,& Rajić, N.. (2014). The iron(III)-modified natural zeolitic tuff as an adsorbent and carrier for selenium oxyanions. in Microporous and Mesoporous Materials
Elsevier, Amsterdam., 197, 92-100.
https://doi.org/10.1016/j.micromeso.2014.06.008

Jevtić S, Arcon I, Recnik A, Babić BM, Mazaj M, Pavlović J, Matijasević D, Nikšić M, Rajić N. The iron(III)-modified natural zeolitic tuff as an adsorbent and carrier for selenium oxyanions. in Microporous and Mesoporous Materials. 2014;197:92-100.
doi:10.1016/j.micromeso.2014.06.008 .

Jevtić, Sanja, Arcon, Iztok, Recnik, Aleksander, Babić, Biljana M., Mazaj, Matjaz, Pavlović, Jelena, Matijasević, Danka, Nikšić, Miomir, Rajić, Nevenka, "The iron(III)-modified natural zeolitic tuff as an adsorbent and carrier for selenium oxyanions" in Microporous and Mesoporous Materials, 197 (2014):92-100,
https://doi.org/10.1016/j.micromeso.2014.06.008 . .

TY  - JOUR
AU  - Rajić, Nevenka
AU  - Zabukovec-Logar, Nataša
AU  - Recnik, Aleksander
AU  - El-Roz, Mohamad
AU  - Thibault-Starzyk, Frederic
AU  - Sprenger, Paul
AU  - Hannevold, Lenka
AU  - Andersen, Anne
AU  - Stocker, Michael
PY  - 2013
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2406
AB  - In this study the catalytic activity of Na-rich and MO-containing natural clinoptilolite (MO - nanopartides of NiO, ZnO, or Cu2O) was studied in the pyrolysis of hardwood lignin. The clinoptilolite samples exhibit different catalytic activities which depend mainly on the type of the nano-oxide. The presence of nano-oxides did not affect the porosity of the clinoptilolite framework but influenced its acidity. However, it seems that acidity of the lattice did not influence the catalytic activity of the clinoptilolite in the pyrolisis of hardwood lignin. The number of Lewis acid sites increased significantly for the ZnO- and Cu2O-containing clinoptilolite whereas for the NiO-sample it did not change appreciably in comparison to the parent zeolite. The amount of phenols in the as-produced bio-oil varies from 39% for ZnO-clinoptilolite, 43% for Na-rich clinoptilolite, to 50 and 54% for Cu2O- and NiO-containing samples, respectively. The highest yield of phenols obtained in the presence of NiO-containing clinoptilolite is ascribed to a synergetic interaction of the clinoptilolite lattice and nano-NiO particles.
PB  - Elsevier Science Bv, Amsterdam
T2  - Microporous and Mesoporous Materials
T1  - Hardwood lignin pyrolysis in the presence of nano-oxide particles embedded onto natural clinoptilolite
EP  - 167
SP  - 162
VL  - 176
DO  - 10.1016/j.micromeso.2013.04.005
ER  - 

@article{
author = "Rajić, Nevenka and Zabukovec-Logar, Nataša and Recnik, Aleksander and El-Roz, Mohamad and Thibault-Starzyk, Frederic and Sprenger, Paul and Hannevold, Lenka and Andersen, Anne and Stocker, Michael",
year = "2013",
abstract = "In this study the catalytic activity of Na-rich and MO-containing natural clinoptilolite (MO - nanopartides of NiO, ZnO, or Cu2O) was studied in the pyrolysis of hardwood lignin. The clinoptilolite samples exhibit different catalytic activities which depend mainly on the type of the nano-oxide. The presence of nano-oxides did not affect the porosity of the clinoptilolite framework but influenced its acidity. However, it seems that acidity of the lattice did not influence the catalytic activity of the clinoptilolite in the pyrolisis of hardwood lignin. The number of Lewis acid sites increased significantly for the ZnO- and Cu2O-containing clinoptilolite whereas for the NiO-sample it did not change appreciably in comparison to the parent zeolite. The amount of phenols in the as-produced bio-oil varies from 39% for ZnO-clinoptilolite, 43% for Na-rich clinoptilolite, to 50 and 54% for Cu2O- and NiO-containing samples, respectively. The highest yield of phenols obtained in the presence of NiO-containing clinoptilolite is ascribed to a synergetic interaction of the clinoptilolite lattice and nano-NiO particles.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Microporous and Mesoporous Materials",
title = "Hardwood lignin pyrolysis in the presence of nano-oxide particles embedded onto natural clinoptilolite",
pages = "167-162",
volume = "176",
doi = "10.1016/j.micromeso.2013.04.005"
}

Rajić, N., Zabukovec-Logar, N., Recnik, A., El-Roz, M., Thibault-Starzyk, F., Sprenger, P., Hannevold, L., Andersen, A.,& Stocker, M.. (2013). Hardwood lignin pyrolysis in the presence of nano-oxide particles embedded onto natural clinoptilolite. in Microporous and Mesoporous Materials
Elsevier Science Bv, Amsterdam., 176, 162-167.
https://doi.org/10.1016/j.micromeso.2013.04.005

Rajić N, Zabukovec-Logar N, Recnik A, El-Roz M, Thibault-Starzyk F, Sprenger P, Hannevold L, Andersen A, Stocker M. Hardwood lignin pyrolysis in the presence of nano-oxide particles embedded onto natural clinoptilolite. in Microporous and Mesoporous Materials. 2013;176:162-167.
doi:10.1016/j.micromeso.2013.04.005 .

Rajić, Nevenka, Zabukovec-Logar, Nataša, Recnik, Aleksander, El-Roz, Mohamad, Thibault-Starzyk, Frederic, Sprenger, Paul, Hannevold, Lenka, Andersen, Anne, Stocker, Michael, "Hardwood lignin pyrolysis in the presence of nano-oxide particles embedded onto natural clinoptilolite" in Microporous and Mesoporous Materials, 176 (2013):162-167,
https://doi.org/10.1016/j.micromeso.2013.04.005 . .

TY  - JOUR
AU  - Luković Golić, Danijela
AU  - Branković, Goran
AU  - Počuča-Nešić, Milica
AU  - Vojisavljević, Katarina
AU  - Recnik, Aleksander
AU  - Daneu, Nina
AU  - Bernik, Slavko
AU  - Šćepanović, Maja
AU  - Poleti, Dejan
AU  - Branković, Zorica
PY  - 2011
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5657
AB  - Zinc oxide nanopowders were synthesized by the sol-gel method from an ethanol solution of zinc acetate dihydrate. Detailed structural and microstructural investigations were carried out using x-ray diffraction, Raman spectroscopy, thermogravimetric and differential thermal analyses, as well as high-resolution transmission electron microscopy (TEM) and field-emission scanning electron microscopy. The intermediate compound of the reaction was layered zinc hydroxide acetate that further transforms into hexagonally shaped ZnO crystalline nanoplates (d(m) = 4 nm), which aggregate into larger spherical particles. According to the TEM analysis the ZnO nanoparticles were self-assembled into larger particles with the same orientation, i.e. aligned lattice planes of the particles. A further solvothermal treatment resulted in hexagonal, prismatic ZnO mesocrystals.
PB  - IOP Publishing Ltd, Bristol
T2  - Nanotechnology
T1  - Structural characterization of self-assembled ZnO nanoparticles obtained by the sol-gel method from Zn(CH3COO)(2)center dot 2H(2)O
IS  - 39
VL  - 22
DO  - 10.1088/0957-4484/22/39/395603
ER  - 

@article{
author = "Luković Golić, Danijela and Branković, Goran and Počuča-Nešić, Milica and Vojisavljević, Katarina and Recnik, Aleksander and Daneu, Nina and Bernik, Slavko and Šćepanović, Maja and Poleti, Dejan and Branković, Zorica",
year = "2011",
abstract = "Zinc oxide nanopowders were synthesized by the sol-gel method from an ethanol solution of zinc acetate dihydrate. Detailed structural and microstructural investigations were carried out using x-ray diffraction, Raman spectroscopy, thermogravimetric and differential thermal analyses, as well as high-resolution transmission electron microscopy (TEM) and field-emission scanning electron microscopy. The intermediate compound of the reaction was layered zinc hydroxide acetate that further transforms into hexagonally shaped ZnO crystalline nanoplates (d(m) = 4 nm), which aggregate into larger spherical particles. According to the TEM analysis the ZnO nanoparticles were self-assembled into larger particles with the same orientation, i.e. aligned lattice planes of the particles. A further solvothermal treatment resulted in hexagonal, prismatic ZnO mesocrystals.",
publisher = "IOP Publishing Ltd, Bristol",
journal = "Nanotechnology",
title = "Structural characterization of self-assembled ZnO nanoparticles obtained by the sol-gel method from Zn(CH3COO)(2)center dot 2H(2)O",
number = "39",
volume = "22",
doi = "10.1088/0957-4484/22/39/395603"
}

Luković Golić, D., Branković, G., Počuča-Nešić, M., Vojisavljević, K., Recnik, A., Daneu, N., Bernik, S., Šćepanović, M., Poleti, D.,& Branković, Z.. (2011). Structural characterization of self-assembled ZnO nanoparticles obtained by the sol-gel method from Zn(CH3COO)(2)center dot 2H(2)O. in Nanotechnology
IOP Publishing Ltd, Bristol., 22(39).
https://doi.org/10.1088/0957-4484/22/39/395603

Luković Golić D, Branković G, Počuča-Nešić M, Vojisavljević K, Recnik A, Daneu N, Bernik S, Šćepanović M, Poleti D, Branković Z. Structural characterization of self-assembled ZnO nanoparticles obtained by the sol-gel method from Zn(CH3COO)(2)center dot 2H(2)O. in Nanotechnology. 2011;22(39).
doi:10.1088/0957-4484/22/39/395603 .

Luković Golić, Danijela, Branković, Goran, Počuča-Nešić, Milica, Vojisavljević, Katarina, Recnik, Aleksander, Daneu, Nina, Bernik, Slavko, Šćepanović, Maja, Poleti, Dejan, Branković, Zorica, "Structural characterization of self-assembled ZnO nanoparticles obtained by the sol-gel method from Zn(CH3COO)(2)center dot 2H(2)O" in Nanotechnology, 22, no. 39 (2011),
https://doi.org/10.1088/0957-4484/22/39/395603 . .

TY  - JOUR
AU  - Rajić, Nevenka
AU  - Stojaković, Đorđe
AU  - Daneu, Nina
AU  - Recnik, Aleksander
PY  - 2011
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1946
AB  - Nanoparticles of NiO, ZnO and Cu(2)O crystallize when the Ni-, Zn- and Cu-exchanged natural clinoptilolite, respectively, are dehydrated by heating in air at 550 degrees C. The dehydration of Mn-exchanged clinoptilolite does not lead to the crystallization of manganese oxide but affects the crystallinity of the host clinoptilolite lattice, which becomes amorphous. The NiO, ZnO and Cu(2)O nanoparticles are found to be randomly dispersed in the clinoptilolite matrix. The particle size varies from 2 to 5 nm and exceeds the aperture of the clinoptilolite channel (approximately 0.4 nm), suggesting that the crystallization of the oxide phases takes place on the surfaces of clinoptilolite microcrystals.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Journal of Physics and Chemistry of Solids
T1  - The formation of oxide nanoparticles on the surface of natural clinoptilolite
EP  - 803
IS  - 6
SP  - 800
VL  - 72
DO  - 10.1016/j.jpcs.2011.03.018
ER  - 

@article{
author = "Rajić, Nevenka and Stojaković, Đorđe and Daneu, Nina and Recnik, Aleksander",
year = "2011",
abstract = "Nanoparticles of NiO, ZnO and Cu(2)O crystallize when the Ni-, Zn- and Cu-exchanged natural clinoptilolite, respectively, are dehydrated by heating in air at 550 degrees C. The dehydration of Mn-exchanged clinoptilolite does not lead to the crystallization of manganese oxide but affects the crystallinity of the host clinoptilolite lattice, which becomes amorphous. The NiO, ZnO and Cu(2)O nanoparticles are found to be randomly dispersed in the clinoptilolite matrix. The particle size varies from 2 to 5 nm and exceeds the aperture of the clinoptilolite channel (approximately 0.4 nm), suggesting that the crystallization of the oxide phases takes place on the surfaces of clinoptilolite microcrystals.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Journal of Physics and Chemistry of Solids",
title = "The formation of oxide nanoparticles on the surface of natural clinoptilolite",
pages = "803-800",
number = "6",
volume = "72",
doi = "10.1016/j.jpcs.2011.03.018"
}

Rajić, N., Stojaković, Đ., Daneu, N.,& Recnik, A.. (2011). The formation of oxide nanoparticles on the surface of natural clinoptilolite. in Journal of Physics and Chemistry of Solids
Pergamon-Elsevier Science Ltd, Oxford., 72(6), 800-803.
https://doi.org/10.1016/j.jpcs.2011.03.018

Rajić N, Stojaković Đ, Daneu N, Recnik A. The formation of oxide nanoparticles on the surface of natural clinoptilolite. in Journal of Physics and Chemistry of Solids. 2011;72(6):800-803.
doi:10.1016/j.jpcs.2011.03.018 .

Rajić, Nevenka, Stojaković, Đorđe, Daneu, Nina, Recnik, Aleksander, "The formation of oxide nanoparticles on the surface of natural clinoptilolite" in Journal of Physics and Chemistry of Solids, 72, no. 6 (2011):800-803,
https://doi.org/10.1016/j.jpcs.2011.03.018 . .

TY  - JOUR
AU  - Rajić, Nevenka
AU  - Stojaković, Đorđe
AU  - Recnik, Aleksander
PY  - 2009
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1470
AB  - Thermogravimetrical analysis has been used to study the kinetics of thermal deamination of bis(ethylenediamine) nickel(II)-containing aluminophosphate (Ni-CHA) which is a precursor of nickel(II)-containing chabazite-like AlPO4-34. The deamination occurs as a single-step kinetic process which is best described by the contracting cylinder model. The obtained activation energy of 200 kJ/mol is mainly a reflection of the strong Ni-N coordination bond. The thermal decomposition of Ni-CHA results in the deposition of crystalline NiO particles homogeneously dispersed in the AlPO4-34 lattice. Average particle size was found to be about 5 nm. The study confirms that the thermal decomposition of amine complexes of Ni(II) encapsulated inside the microporous aluminophosphate host can be a suitable method for obtaining fine nano-oxide particles.
PB  - Elsevier Science Sa, Lausanne
T2  - Inorganica Chimica Acta
T1  - Thermal deamination kinetics of the nickel-containing chabazite-like aluminophosphate, Ni(NH2-CH2-CH2-NH2)(2)(AlPO4)(6)(OH)(2), deposition of nanocrystalline NiO particles
EP  - 5143
IS  - 15
SP  - 5139
VL  - 362
DO  - 10.1016/j.ica.2009.09.007
ER  - 

@article{
author = "Rajić, Nevenka and Stojaković, Đorđe and Recnik, Aleksander",
year = "2009",
abstract = "Thermogravimetrical analysis has been used to study the kinetics of thermal deamination of bis(ethylenediamine) nickel(II)-containing aluminophosphate (Ni-CHA) which is a precursor of nickel(II)-containing chabazite-like AlPO4-34. The deamination occurs as a single-step kinetic process which is best described by the contracting cylinder model. The obtained activation energy of 200 kJ/mol is mainly a reflection of the strong Ni-N coordination bond. The thermal decomposition of Ni-CHA results in the deposition of crystalline NiO particles homogeneously dispersed in the AlPO4-34 lattice. Average particle size was found to be about 5 nm. The study confirms that the thermal decomposition of amine complexes of Ni(II) encapsulated inside the microporous aluminophosphate host can be a suitable method for obtaining fine nano-oxide particles.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Inorganica Chimica Acta",
title = "Thermal deamination kinetics of the nickel-containing chabazite-like aluminophosphate, Ni(NH2-CH2-CH2-NH2)(2)(AlPO4)(6)(OH)(2), deposition of nanocrystalline NiO particles",
pages = "5143-5139",
number = "15",
volume = "362",
doi = "10.1016/j.ica.2009.09.007"
}

Rajić, N., Stojaković, Đ.,& Recnik, A.. (2009). Thermal deamination kinetics of the nickel-containing chabazite-like aluminophosphate, Ni(NH2-CH2-CH2-NH2)(2)(AlPO4)(6)(OH)(2), deposition of nanocrystalline NiO particles. in Inorganica Chimica Acta
Elsevier Science Sa, Lausanne., 362(15), 5139-5143.
https://doi.org/10.1016/j.ica.2009.09.007

Rajić N, Stojaković Đ, Recnik A. Thermal deamination kinetics of the nickel-containing chabazite-like aluminophosphate, Ni(NH2-CH2-CH2-NH2)(2)(AlPO4)(6)(OH)(2), deposition of nanocrystalline NiO particles. in Inorganica Chimica Acta. 2009;362(15):5139-5143.
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Rajić, Nevenka, Stojaković, Đorđe, Recnik, Aleksander, "Thermal deamination kinetics of the nickel-containing chabazite-like aluminophosphate, Ni(NH2-CH2-CH2-NH2)(2)(AlPO4)(6)(OH)(2), deposition of nanocrystalline NiO particles" in Inorganica Chimica Acta, 362, no. 15 (2009):5139-5143,
https://doi.org/10.1016/j.ica.2009.09.007 . .