Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1612217 | Journal of Alloys and Compounds | 2014 | 7 Pages |
Abstract
This paper introduces a simple and reproducible chemical process for synthesis of Pt-mesoporous tungsten carbide/carbon composites composites Pt-m(WC/C) by means of a soft-template method. In this process, low-molecular-weight phenolic resol acted as the precursor both for carbon support and also the carbon resource of tungsten carbide. Tungsten hexachloride was used as a tungsten precursor along with different amount of triblock copolymer Pluronic F127 as pore-forming component. The best performance of Pt-m(WC/C) towards methanol oxidation is found when the mass ratios of WCl6:F127 is 1:0.6. The composite presents an improved methanol oxidation performance evidenced by a negative shift in onset potential, and increase of peak current density, compared with commercial Pt/C. The difference is explained by the adding of appropriate amount of F127 which facilitates the construction of mesoporous matrix structure of WC/C.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Chun'an Ma, Lingzhi Kang, Meiqin Shi, Xiaoling Lang, Yekun Jiang,