Methanol oxidation was investigated on the following Pt catalysts: bare Pt electrode, Pt covered by nafion (R) film, and pt catalysts supported on high area carbons in the form of an ink. The reaction was carried out using slow linear potential sweep and potentiostatic steps. Active surface area of Pt particles was estimated from hydrogen desorption charge on cyclic voltammograms. The influence of Nafion film, Pt loading, type of carbon support, and methanol concentration were studied. No influence of Nafion (R) film on kinetic parameters of methanol oxidation was found. Tafel slope on smooth Pt was found to be about 90 mV dec(-1), while on supported Pt catalysts time depende(n)t values between 140 and 90 mV dec(-1) were estimated from the potentiostatic decays by using data between 0.5 and 5 min. Specific activity was slightly dependent on Pt loading with flat maximum at about 20%, Pt. Activity of Pt/SAB catalyst was two to three times higher than that of Pt/BP and Pt/XC-72 catalysts.
TY - JOUR
AU - Gojković, Snežana Lj.
AU - Vidaković, Tanja
PY - 2001
UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/374
AB - Methanol oxidation was investigated on the following Pt catalysts: bare Pt electrode, Pt covered by nafion (R) film, and pt catalysts supported on high area carbons in the form of an ink. The reaction was carried out using slow linear potential sweep and potentiostatic steps. Active surface area of Pt particles was estimated from hydrogen desorption charge on cyclic voltammograms. The influence of Nafion film, Pt loading, type of carbon support, and methanol concentration were studied. No influence of Nafion (R) film on kinetic parameters of methanol oxidation was found. Tafel slope on smooth Pt was found to be about 90 mV dec(-1), while on supported Pt catalysts time depende(n)t values between 140 and 90 mV dec(-1) were estimated from the potentiostatic decays by using data between 0.5 and 5 min. Specific activity was slightly dependent on Pt loading with flat maximum at about 20%, Pt. Activity of Pt/SAB catalyst was two to three times higher than that of Pt/BP and Pt/XC-72 catalysts.
PB - Pergamon-Elsevier Science Ltd, Oxford
T2 - Electrochimica Acta
T1 - Methanol oxidation on an ink type electrode using Pt supported on high area carbons
EP - 642
IS - 4
SP - 633
VL - 47
DO - 10.1016/S0013-4686(01)00730-7
ER -
@article{
author = "Gojković, Snežana Lj. and Vidaković, Tanja",
year = "2001",
abstract = "Methanol oxidation was investigated on the following Pt catalysts: bare Pt electrode, Pt covered by nafion (R) film, and pt catalysts supported on high area carbons in the form of an ink. The reaction was carried out using slow linear potential sweep and potentiostatic steps. Active surface area of Pt particles was estimated from hydrogen desorption charge on cyclic voltammograms. The influence of Nafion film, Pt loading, type of carbon support, and methanol concentration were studied. No influence of Nafion (R) film on kinetic parameters of methanol oxidation was found. Tafel slope on smooth Pt was found to be about 90 mV dec(-1), while on supported Pt catalysts time depende(n)t values between 140 and 90 mV dec(-1) were estimated from the potentiostatic decays by using data between 0.5 and 5 min. Specific activity was slightly dependent on Pt loading with flat maximum at about 20%, Pt. Activity of Pt/SAB catalyst was two to three times higher than that of Pt/BP and Pt/XC-72 catalysts.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Electrochimica Acta",
title = "Methanol oxidation on an ink type electrode using Pt supported on high area carbons",
pages = "642-633",
number = "4",
volume = "47",
doi = "10.1016/S0013-4686(01)00730-7"
}
Gojković, S. Lj.,& Vidaković, T.. (2001). Methanol oxidation on an ink type electrode using Pt supported on high area carbons. in Electrochimica Acta
Pergamon-Elsevier Science Ltd, Oxford., 47(4), 633-642.
https://doi.org/10.1016/S0013-4686(01)00730-7
Gojković SL, Vidaković T. Methanol oxidation on an ink type electrode using Pt supported on high area carbons. in Electrochimica Acta. 2001;47(4):633-642.
doi:10.1016/S0013-4686(01)00730-7 .
Gojković, Snežana Lj., Vidaković, Tanja, "Methanol oxidation on an ink type electrode using Pt supported on high area carbons" in Electrochimica Acta, 47, no. 4 (2001):633-642,
https://doi.org/10.1016/S0013-4686(01)00730-7 . .
