Method for preparing highly dispersed Pt catalysts on mesoporous carbon support

Zeng, Jianhuang, Su, Fabing, Lee, Jim Yang, Zhao, X. S., Chen, Jianjun and Jiang, Xiaohua (2007) Method for preparing highly dispersed Pt catalysts on mesoporous carbon support. Journal of Materials Science, 42 17: 7191-7197. doi:10.1007/s10853-007-1571-4

Author Zeng, Jianhuang
Su, Fabing
Lee, Jim Yang
Zhao, X. S.
Chen, Jianjun
Jiang, Xiaohua
Title Method for preparing highly dispersed Pt catalysts on mesoporous carbon support
Journal name Journal of Materials Science   Check publisher's open access policy
ISSN 0022-2461
Publication date 2007-09
Sub-type Article (original research)
DOI 10.1007/s10853-007-1571-4
Volume 42
Issue 17
Start page 7191
End page 7197
Total pages 7
Place of publication Secaucus, NJ, United States
Publisher Springer New York LLC
Language eng
Abstract Two Pt catalysts supported on template-synthesized mesoporous carbons (MC) were prepared by the conventional wet-impregnation method (Pt-impreg/MC) and by the less commonly used colloidal deposition method (Pt-coll/MC) to examine the effect of preparation method on catalyst performance. The catalysts were characterized by transmission electron microscopy, field-emission electron microscopy, thermogravimetric analysis and X-ray diffraction. The electro-oxidation of methanol in acidic solutions for direct methanol fuel cells at room temperature was used as the test reaction. CO anodic stripping voltammetry and cyclic voltammetry both recorded enhanced performance for Pt-coll/MC relative to Pt-impreg/MC. The poorer application performance of Pt-impreg/MC can be attributed to the transport resistance in the mesopores, and to the entrapment of a sizable fraction (40%) of Pt nanoparticles in the mesopores which are not readily accessible to the reactants under the reaction conditions.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
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