TY  - JOUR
AU  - Jović, Borka M.
AU  - Dražić, Dragutin M.
AU  - Jović, Vladimir D.
PY  - 1999
UR  - https://dais.sanu.ac.rs/123456789/11650
AB  - The processes of adsorption of sulphate anions onto the (111) face of silver have been investigated by analysis of the cyclic voltammetry and potcntiostatic pulse results. It was shown, by fitting the experimentally recorded θ - E dependences, that the adsorption of anions follows Frumkin adsorption isotherm. The adsorbed structure was found to be less dense than expected for the dense packed anion monolayer and the process was characterized by high value of the interaction parameter and the Gibbs energy of adsorption (f = 16.5 and ΔGoads.θ→0 = - 64 kJ mol 1). From the slope of the Ep.a - log (c0) dependence it was concluded that complete charge transfer between the adsorbed anions and the silver substrate occurs. This is supported by the Ep.a - log v linear dependence in the region of high sweep rates (v > 10 V s 1) with rational value of line slope (≈ 60 mV dec 1) which is possible only if the complete charge transfer reaction occurs. The elcctrosorption process of sulphate anions was found to be complex electrochemical reaction, taking place through three steps. It was proposed that the rate-determining step is the second step, i.e., the electrochemical formation of (SO4)ads species.
AB  - Proučavan je proces adsorpcije sulfatnih anjona na (111) pljosni monokristalasrebra metodama ciklične voltametrije i potenciostatskih pulseva. Na osnovu eksperimentalno određenih q–E zavisnosti pokazano je da se na adsorpciju može primeniti Frumkinova adsorpciona izoterma. Nađeno je da je gustina adsorbovanog slojamanja nego kada bi sloj bio maksimalno moguće gusto pakovan kao i da adsorpcijukarakterišu visoke vrednosti Frumkinovog parametra interakcije (f = 16,5) i Gibsoveenergije adosrpcije (DGºads,q®0 = –64 kJ mol). Na osnovu nagiba zavisnosti Ep,a –log (c0)zaključeno je da se pri elektrosorpciji odigrava i potpuna izmena naboja anjona sasupstratom. Ovaj zaključak podržava dobijena linearna zavisnost Ep,a – log v u oblastivelikih brzina promene potencijala (v>10 V s–1) sa racionalnom vrednošću nagiba (»60mV dek–1), a koja se može dobiti samo pri odigravanju potpune razmene naboja. Utvrđenoje da je elektrosorpcija sulfatnih anjona složena elektrohemijska reakcija koja seodigrava u tri stupnja. Stupanj koji određuje brzinu ukupne reakcije je drugi stupanj,elektrohemijsko stvaranje intermedijera (SO4)ads.
PB  - Belgrade : Serbian Chemical Society
T2  - Journal of the Serbian Chemical Society
T1  - Mechanism and kinetics of the electrosorption of sulphate anions on the (111) face of silver
T1  - Mehanizam i kinetika elektrosorpcije sulfatnih anjona na (111) pljosni srebra
SP  - 539
EP  - 552
VL  - 64
IS  - 9
DO  - 10.2298/jsc9909539j
UR  - https://hdl.handle.net/21.15107/rcub_dais_11650
ER  - 

@article{
author = "Jović, Borka M. and Dražić, Dragutin M. and Jović, Vladimir D.",
year = "1999",
abstract = "The processes of adsorption of sulphate anions onto the (111) face of silver have been investigated by analysis of the cyclic voltammetry and potcntiostatic pulse results. It was shown, by fitting the experimentally recorded θ - E dependences, that the adsorption of anions follows Frumkin adsorption isotherm. The adsorbed structure was found to be less dense than expected for the dense packed anion monolayer and the process was characterized by high value of the interaction parameter and the Gibbs energy of adsorption (f = 16.5 and ΔGoads.θ→0 = - 64 kJ mol 1). From the slope of the Ep.a - log (c0) dependence it was concluded that complete charge transfer between the adsorbed anions and the silver substrate occurs. This is supported by the Ep.a - log v linear dependence in the region of high sweep rates (v > 10 V s 1) with rational value of line slope (≈ 60 mV dec 1) which is possible only if the complete charge transfer reaction occurs. The elcctrosorption process of sulphate anions was found to be complex electrochemical reaction, taking place through three steps. It was proposed that the rate-determining step is the second step, i.e., the electrochemical formation of (SO4)ads species., Proučavan je proces adsorpcije sulfatnih anjona na (111) pljosni monokristalasrebra metodama ciklične voltametrije i potenciostatskih pulseva. Na osnovu eksperimentalno određenih q–E zavisnosti pokazano je da se na adsorpciju može primeniti Frumkinova adsorpciona izoterma. Nađeno je da je gustina adsorbovanog slojamanja nego kada bi sloj bio maksimalno moguće gusto pakovan kao i da adsorpcijukarakterišu visoke vrednosti Frumkinovog parametra interakcije (f = 16,5) i Gibsoveenergije adosrpcije (DGºads,q®0 = –64 kJ mol). Na osnovu nagiba zavisnosti Ep,a –log (c0)zaključeno je da se pri elektrosorpciji odigrava i potpuna izmena naboja anjona sasupstratom. Ovaj zaključak podržava dobijena linearna zavisnost Ep,a – log v u oblastivelikih brzina promene potencijala (v>10 V s–1) sa racionalnom vrednošću nagiba (»60mV dek–1), a koja se može dobiti samo pri odigravanju potpune razmene naboja. Utvrđenoje da je elektrosorpcija sulfatnih anjona složena elektrohemijska reakcija koja seodigrava u tri stupnja. Stupanj koji određuje brzinu ukupne reakcije je drugi stupanj,elektrohemijsko stvaranje intermedijera (SO4)ads.",
publisher = "Belgrade : Serbian Chemical Society",
journal = "Journal of the Serbian Chemical Society",
title = "Mechanism and kinetics of the electrosorption of sulphate anions on the (111) face of silver, Mehanizam i kinetika elektrosorpcije sulfatnih anjona na (111) pljosni srebra",
pages = "539-552",
volume = "64",
number = "9",
doi = "10.2298/jsc9909539j",
url = "https://hdl.handle.net/21.15107/rcub_dais_11650"
}

Jović, B. M., Dražić, D. M.,& Jović, V. D.. (1999). Mechanism and kinetics of the electrosorption of sulphate anions on the (111) face of silver. in Journal of the Serbian Chemical Society
Belgrade : Serbian Chemical Society., 64(9), 539-552.
https://doi.org/10.2298/jsc9909539j
https://hdl.handle.net/21.15107/rcub_dais_11650

Jović BM, Dražić DM, Jović VD. Mechanism and kinetics of the electrosorption of sulphate anions on the (111) face of silver. in Journal of the Serbian Chemical Society. 1999;64(9):539-552.
doi:10.2298/jsc9909539j
https://hdl.handle.net/21.15107/rcub_dais_11650 .

Jović, Borka M., Dražić, Dragutin M., Jović, Vladimir D., "Mechanism and kinetics of the electrosorption of sulphate anions on the (111) face of silver" in Journal of the Serbian Chemical Society, 64, no. 9 (1999):539-552,
https://doi.org/10.2298/jsc9909539j .,
https://hdl.handle.net/21.15107/rcub_dais_11650 .