The contribution of carbon functional groups (CFG) to methanol oxidation at carbon-supported Pt catalysts is studied in this work. Platinum black, attached in a form of a thin layer to electrochemically treated glassy carbon (GC), is investigated as a model system. Impedance measurements reveal significant changes in capacitive response of GC anodically polarized in H2SO4 solution in comparison to unoxidized state. XPS analyses show the increased fraction of oxygen-containing CFGs upon electrochemical treatment of GC. The activity of Pt black attached to oxidized GC for methanol oxidation is more than two times larger in comparison to the catalyst attached to unoxidized GC. Increased activity is most likely due to the promotion Of COads removal by increased content of CFGs.
Keywords:
Carbon functional groups / Electrochemical activation / Platinum catalyst / Methanol oxidation / EIS
TY - JOUR
AU - Stevanović, Sanja
AU - Panić, Vladimir
AU - Tripković, Dušan
AU - Jovanović, Vladislava M.
PY - 2009
UR - http://cer.ihtm.bg.ac.rs/handle/123456789/489
AB - The contribution of carbon functional groups (CFG) to methanol oxidation at carbon-supported Pt catalysts is studied in this work. Platinum black, attached in a form of a thin layer to electrochemically treated glassy carbon (GC), is investigated as a model system. Impedance measurements reveal significant changes in capacitive response of GC anodically polarized in H2SO4 solution in comparison to unoxidized state. XPS analyses show the increased fraction of oxygen-containing CFGs upon electrochemical treatment of GC. The activity of Pt black attached to oxidized GC for methanol oxidation is more than two times larger in comparison to the catalyst attached to unoxidized GC. Increased activity is most likely due to the promotion Of COads removal by increased content of CFGs.
PB - Elsevier Science Inc, New York
T2 - Electrochemistry Communications
T1 - Promoting effect of carbon functional groups in methanol oxidation on supported Pt catalyst
VL - 11
IS - 1
SP - 18
EP - 21
DO - 10.1016/j.elecom.2008.10.021
ER -
@article{
author = "Stevanović, Sanja and Panić, Vladimir and Tripković, Dušan and Jovanović, Vladislava M.",
year = "2009",
url = "http://cer.ihtm.bg.ac.rs/handle/123456789/489",
abstract = "The contribution of carbon functional groups (CFG) to methanol oxidation at carbon-supported Pt catalysts is studied in this work. Platinum black, attached in a form of a thin layer to electrochemically treated glassy carbon (GC), is investigated as a model system. Impedance measurements reveal significant changes in capacitive response of GC anodically polarized in H2SO4 solution in comparison to unoxidized state. XPS analyses show the increased fraction of oxygen-containing CFGs upon electrochemical treatment of GC. The activity of Pt black attached to oxidized GC for methanol oxidation is more than two times larger in comparison to the catalyst attached to unoxidized GC. Increased activity is most likely due to the promotion Of COads removal by increased content of CFGs.",
publisher = "Elsevier Science Inc, New York",
journal = "Electrochemistry Communications",
title = "Promoting effect of carbon functional groups in methanol oxidation on supported Pt catalyst",
volume = "11",
number = "1",
pages = "18-21",
doi = "10.1016/j.elecom.2008.10.021"
}
Stevanović, S., Panić, V., Tripković, D.,& Jovanović, V. M. (2009). Promoting effect of carbon functional groups in methanol oxidation on supported Pt catalyst.
Electrochemistry Communications
Elsevier Science Inc, New York., 11(1), 18-21.
https://doi.org/10.1016/j.elecom.2008.10.021
Stevanović S, Panić V, Tripković D, Jovanović VM. Promoting effect of carbon functional groups in methanol oxidation on supported Pt catalyst. Electrochemistry Communications. 2009;11(1):18-21
Stevanović Sanja, Panić Vladimir, Tripković Dušan, Jovanović Vladislava M., "Promoting effect of carbon functional groups in methanol oxidation on supported Pt catalyst" Electrochemistry Communications, 11, no. 1 (2009):18-21,
https://doi.org/10.1016/j.elecom.2008.10.021 .
