Promoting effect of carbon functional groups in methanol oxidation on supported Pt catalyst
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.
Keywords:
Carbon functional groups / Electrochemical activation / Platinum catalyst / Methanol oxidation / EISSource:
Electrochemistry Communications, 2009, 11, 1, 18-21Publisher:
- Elsevier Science Inc, New York
Funding / projects:
DOI: 10.1016/j.elecom.2008.10.021
ISSN: 1388-2481
WoS: 000263018200005
Scopus: 2-s2.0-57949098337
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IHTMTY - JOUR AU - Stevanović, Sanja AU - Panić, Vladimir AU - Tripković, Dušan AU - Jovanović, Vladislava M. PY - 2009 UR - https://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", 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. in 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. in Electrochemistry Communications. 2009;11(1):18-21. doi:10.1016/j.elecom.2008.10.021 .
Stevanović, Sanja, Panić, Vladimir, Tripković, Dušan, Jovanović, Vladislava M., "Promoting effect of carbon functional groups in methanol oxidation on supported Pt catalyst" in Electrochemistry Communications, 11, no. 1 (2009):18-21, https://doi.org/10.1016/j.elecom.2008.10.021 . .