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Journal of Materials Science
Erschienen in: Journal of Materials Science 3/2015

01.02.2015 | Original Paper

Different polyaniline/carbon nanotube composites as Pt catalyst supports for methanol electro-oxidation

verfasst von: Xingwei Li, Jiadi Wei, Yuzheng Chai, Shuo Zhang, Min Zhou

Erschienen in: Journal of Materials Science | Ausgabe 3/2015

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Abstract

Polyaniline/carbon nanotube composites as Pt catalyst supports for methanol electro-oxidation have been reported. Conventionally, the size and distribution of Pt catalysts were improved in the presence of polyaniline (PAni), and an interaction between Pt and N atoms in PAni could prevent Pt catalysts from aggregation and detachment. In this work, polyaniline-modified multi-walled carbon nanotube (PAni-MWCNT) composites, with different loading levels of PAni, were synthesized by in situ oxidative polymerization of aniline on the surface of MWCNT. And Pt catalysts supported by these composites were prepared by the liquid phase reduction. Our studies revealed that the loading level of PAni affected the proportion of the different valence Pt components. And the proportion of Pt(0) and Pt(II) was also important for improving the electro-catalytic performance of Pt catalysts. The proper proportion of Pt(II) was essential for coordination of Pt with oxygen-containing ligands (OH·, H2O) and thus accelerating oxidation of Pt (CO)ads with release of CO2 by improving the tolerance to intermediate carbonaceous species.
Vorheriger Artikel Characterization of antimicrobial poly(lactic acid)/poly(trimethylene carbonate) films with cinnamaldehyde
Nächster Artikel Scatter-limited conduction in printed platinum nanofilms

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Metadaten
Titel
Different polyaniline/carbon nanotube composites as Pt catalyst supports for methanol electro-oxidation
verfasst von
Xingwei Li
Jiadi Wei
Yuzheng Chai
Shuo Zhang
Min Zhou
Publikationsdatum
01.02.2015
Verlag
Springer US
Erschienen in
Journal of Materials Science / Ausgabe 3/2015
Print ISSN: 0022-2461
Elektronische ISSN: 1573-4803
DOI
https://doi.org/10.1007/s10853-014-8672-7

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