Silver deposition on chemically treated carbon monolith
Izdvajanje srebra na površini hemijski tretiranog karbon monolita
Apstrakt
Carbon monolith was treated with HNO3, KOH and H2O2. Effects of these treatments on the surface functional groups and on the amount of silver deposited on the CM surface were studied by temperature programmed desorption (TPD) and atomic absorption spectrometry (AAS). As a result of chemical treatment there was an increase in the amount of surface oxygen complexes. The increase in the amount of silver deposit is proportional to the amount of surface groups that produce CO under decomposition. However, the high amount of CO groups, decomposing above 600°C, induces the smaller Ag crystallite size. Therefore, the high temperature CO evolving oxides are, most likely, the initial centers for Ag deposition.
Karbon monolit (KM) tretiran je rastvorima HNO3, KOH i H2O2. Uticaj tretmana na površinske funkcionalne grupe i na količinu izdvojenog srebra na površini KM-a ispitivan je temperaturski programiranom desorpcijom (TPD) i atomskom apsorpcionom spektrometrijom (AAS). Tretman svim navedenim rastvorima dovodi do povećanja količine površinskih kiseoničnih grupa, a količina izdvojenog srebra je proporcionalna količini grupa koje dekompozicijom daju CO. Visoko-temperaturske fenolne, karbonilne, etarske i hinonske grupe, koje dekompozicijom daju CO iznad 600°C, predstavljaju inicijalne centre za rast kristalita Ag, a veličina kristalita srebra je obrnuto proporcionalna koncentraciji ovih visoko-temperaturskih grupa na površini KM.
Ključne reči:
carbon monolith / TPD / surface oxygen complexes / chemical treatment / silver deposition / karbon monolit / TPD / površinske kiseonične grupe / hemijski tretman / izdvajanje srebraIzvor:
Hemijska industrija, 2009, 63, 3, 195-200Izdavač:
- Association of Chemical Engineers of Serbia
Finansiranje / projekti:
- Projekat Ministarstva nauke Republike Srbije: Fizika i hemija sa jonskim snopovima
DOI: 10.2298/HEMIND0903195J
ISSN: 0367-598X
WoS: 000272436600010
Scopus: 2-s2.0-77952914433
Institucija/grupa
Tehnološko-metalurški fakultetTY - JOUR AU - Jovanović, Zoran M. AU - Kalijadis, Ana AU - Vukčević, Marija AU - Laušević, Zoran AU - Laušević, Mila PY - 2009 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1406 AB - Carbon monolith was treated with HNO3, KOH and H2O2. Effects of these treatments on the surface functional groups and on the amount of silver deposited on the CM surface were studied by temperature programmed desorption (TPD) and atomic absorption spectrometry (AAS). As a result of chemical treatment there was an increase in the amount of surface oxygen complexes. The increase in the amount of silver deposit is proportional to the amount of surface groups that produce CO under decomposition. However, the high amount of CO groups, decomposing above 600°C, induces the smaller Ag crystallite size. Therefore, the high temperature CO evolving oxides are, most likely, the initial centers for Ag deposition. AB - Karbon monolit (KM) tretiran je rastvorima HNO3, KOH i H2O2. Uticaj tretmana na površinske funkcionalne grupe i na količinu izdvojenog srebra na površini KM-a ispitivan je temperaturski programiranom desorpcijom (TPD) i atomskom apsorpcionom spektrometrijom (AAS). Tretman svim navedenim rastvorima dovodi do povećanja količine površinskih kiseoničnih grupa, a količina izdvojenog srebra je proporcionalna količini grupa koje dekompozicijom daju CO. Visoko-temperaturske fenolne, karbonilne, etarske i hinonske grupe, koje dekompozicijom daju CO iznad 600°C, predstavljaju inicijalne centre za rast kristalita Ag, a veličina kristalita srebra je obrnuto proporcionalna koncentraciji ovih visoko-temperaturskih grupa na površini KM. PB - Association of Chemical Engineers of Serbia T2 - Hemijska industrija T1 - Silver deposition on chemically treated carbon monolith T1 - Izdvajanje srebra na površini hemijski tretiranog karbon monolita EP - 200 IS - 3 SP - 195 VL - 63 DO - 10.2298/HEMIND0903195J ER -
@article{ author = "Jovanović, Zoran M. and Kalijadis, Ana and Vukčević, Marija and Laušević, Zoran and Laušević, Mila", year = "2009", abstract = "Carbon monolith was treated with HNO3, KOH and H2O2. Effects of these treatments on the surface functional groups and on the amount of silver deposited on the CM surface were studied by temperature programmed desorption (TPD) and atomic absorption spectrometry (AAS). As a result of chemical treatment there was an increase in the amount of surface oxygen complexes. The increase in the amount of silver deposit is proportional to the amount of surface groups that produce CO under decomposition. However, the high amount of CO groups, decomposing above 600°C, induces the smaller Ag crystallite size. Therefore, the high temperature CO evolving oxides are, most likely, the initial centers for Ag deposition., Karbon monolit (KM) tretiran je rastvorima HNO3, KOH i H2O2. Uticaj tretmana na površinske funkcionalne grupe i na količinu izdvojenog srebra na površini KM-a ispitivan je temperaturski programiranom desorpcijom (TPD) i atomskom apsorpcionom spektrometrijom (AAS). Tretman svim navedenim rastvorima dovodi do povećanja količine površinskih kiseoničnih grupa, a količina izdvojenog srebra je proporcionalna količini grupa koje dekompozicijom daju CO. Visoko-temperaturske fenolne, karbonilne, etarske i hinonske grupe, koje dekompozicijom daju CO iznad 600°C, predstavljaju inicijalne centre za rast kristalita Ag, a veličina kristalita srebra je obrnuto proporcionalna koncentraciji ovih visoko-temperaturskih grupa na površini KM.", publisher = "Association of Chemical Engineers of Serbia", journal = "Hemijska industrija", title = "Silver deposition on chemically treated carbon monolith, Izdvajanje srebra na površini hemijski tretiranog karbon monolita", pages = "200-195", number = "3", volume = "63", doi = "10.2298/HEMIND0903195J" }
Jovanović, Z. M., Kalijadis, A., Vukčević, M., Laušević, Z.,& Laušević, M.. (2009). Silver deposition on chemically treated carbon monolith. in Hemijska industrija Association of Chemical Engineers of Serbia., 63(3), 195-200. https://doi.org/10.2298/HEMIND0903195J
Jovanović ZM, Kalijadis A, Vukčević M, Laušević Z, Laušević M. Silver deposition on chemically treated carbon monolith. in Hemijska industrija. 2009;63(3):195-200. doi:10.2298/HEMIND0903195J .
Jovanović, Zoran M., Kalijadis, Ana, Vukčević, Marija, Laušević, Zoran, Laušević, Mila, "Silver deposition on chemically treated carbon monolith" in Hemijska industrija, 63, no. 3 (2009):195-200, https://doi.org/10.2298/HEMIND0903195J . .