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.
TY - 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 . .
