Kinetic study of methanol oxidation on carbon-supported PtRu electrocatalyst
Само за регистроване кориснике
2003
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Methanol electrooxidation was investigated on the carbon-supported PtRu electrocatalyst (1:1 atomic ratio) in acid media. X-ray diffraction measurement indicated alloying of Pt and Ru. Cyclic voltammetry of the sample reflects the amount of Ruin the catalyst and its ability to adsorb OH radicals. Tafel plots for the oxidation of 0.02-3 M methanol in the solutions containing 0.05-1 M HClO4 and in the temperature range 27-40 degreesC showed reasonably well-defined linear region with the slope of about 115 mV dec(-1) at the low currents, irrespective of the experimental conditions employed. Reaction order with respect to methanol was found to be 0.5. A correlation between methanol oxidation rate and pseudocapacitive current of OH adsorption on Ru sites was established. It was proposed that bifunctional mechanism is operative with the reaction between methanol residues adsorbed on Pt sites and OH radicals adsorbed on Ru sites as the rate-determining step.
Кључне речи:
electrochemical oxidation / methanol / platinum-ruthenium-supported catalyst / fuel cell catalystИзвор:
Electrochimica Acta, 2003, 48, 24, 3607-3614Издавач:
- Pergamon-Elsevier Science Ltd, Oxford
DOI: 10.1016/S0013-4686(03)00481-X
ISSN: 0013-4686
WoS: 000185674600004
Scopus: 2-s2.0-0141569819
Институција/група
Tehnološko-metalurški fakultetTY - JOUR AU - Gojković, Snežana Lj. AU - Vidaković, Tanja AU - Durović, DR PY - 2003 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/586 AB - Methanol electrooxidation was investigated on the carbon-supported PtRu electrocatalyst (1:1 atomic ratio) in acid media. X-ray diffraction measurement indicated alloying of Pt and Ru. Cyclic voltammetry of the sample reflects the amount of Ruin the catalyst and its ability to adsorb OH radicals. Tafel plots for the oxidation of 0.02-3 M methanol in the solutions containing 0.05-1 M HClO4 and in the temperature range 27-40 degreesC showed reasonably well-defined linear region with the slope of about 115 mV dec(-1) at the low currents, irrespective of the experimental conditions employed. Reaction order with respect to methanol was found to be 0.5. A correlation between methanol oxidation rate and pseudocapacitive current of OH adsorption on Ru sites was established. It was proposed that bifunctional mechanism is operative with the reaction between methanol residues adsorbed on Pt sites and OH radicals adsorbed on Ru sites as the rate-determining step. PB - Pergamon-Elsevier Science Ltd, Oxford T2 - Electrochimica Acta T1 - Kinetic study of methanol oxidation on carbon-supported PtRu electrocatalyst EP - 3614 IS - 24 SP - 3607 VL - 48 DO - 10.1016/S0013-4686(03)00481-X ER -
@article{ author = "Gojković, Snežana Lj. and Vidaković, Tanja and Durović, DR", year = "2003", abstract = "Methanol electrooxidation was investigated on the carbon-supported PtRu electrocatalyst (1:1 atomic ratio) in acid media. X-ray diffraction measurement indicated alloying of Pt and Ru. Cyclic voltammetry of the sample reflects the amount of Ruin the catalyst and its ability to adsorb OH radicals. Tafel plots for the oxidation of 0.02-3 M methanol in the solutions containing 0.05-1 M HClO4 and in the temperature range 27-40 degreesC showed reasonably well-defined linear region with the slope of about 115 mV dec(-1) at the low currents, irrespective of the experimental conditions employed. Reaction order with respect to methanol was found to be 0.5. A correlation between methanol oxidation rate and pseudocapacitive current of OH adsorption on Ru sites was established. It was proposed that bifunctional mechanism is operative with the reaction between methanol residues adsorbed on Pt sites and OH radicals adsorbed on Ru sites as the rate-determining step.", publisher = "Pergamon-Elsevier Science Ltd, Oxford", journal = "Electrochimica Acta", title = "Kinetic study of methanol oxidation on carbon-supported PtRu electrocatalyst", pages = "3614-3607", number = "24", volume = "48", doi = "10.1016/S0013-4686(03)00481-X" }
Gojković, S. Lj., Vidaković, T.,& Durović, D.. (2003). Kinetic study of methanol oxidation on carbon-supported PtRu electrocatalyst. in Electrochimica Acta Pergamon-Elsevier Science Ltd, Oxford., 48(24), 3607-3614. https://doi.org/10.1016/S0013-4686(03)00481-X
Gojković SL, Vidaković T, Durović D. Kinetic study of methanol oxidation on carbon-supported PtRu electrocatalyst. in Electrochimica Acta. 2003;48(24):3607-3614. doi:10.1016/S0013-4686(03)00481-X .
Gojković, Snežana Lj., Vidaković, Tanja, Durović, DR, "Kinetic study of methanol oxidation on carbon-supported PtRu electrocatalyst" in Electrochimica Acta, 48, no. 24 (2003):3607-3614, https://doi.org/10.1016/S0013-4686(03)00481-X . .