Abstract
PtRu nanocatalyst supported on mesoporous carbon thin film (TFC) with incorporation of the non-metallic phosphorus is explored as an anodic catalytic material for direct methanol fuel cell (DMFC). The catalyst 20 wt.% PtRuP 0.1/TFC gives a very high current density in the electrochemical oxidation of methanol, which is much enhanced than that of the PtRu/TFC without P loading and two times higher compared to a commercial PtRu/XC-72 catalyst. XPS and EXAFS analysis of the catalysts show that phosphorus helps to reduce the size of PtRu nanoalloy by acting as a surface protecting agent to the nanoparticles and it does not alter the electronic structure of PtRu. The PtRuP nanocatalyst with a particle size of 3 nm was found to have the best reactivity and catalytic stability.
Original language | English |
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Pages (from-to) | 109-115 |
Number of pages | 7 |
Journal | Catalysis Today |
Volume | 160 |
Issue number | 1 |
DOIs | |
Publication status | Published - Feb 2 2011 |
Externally published | Yes |
Keywords
- Direct methanol fuel cell
- EXAFS
- Mesoporous carbon
- Phosphorus
- PtRu alloy
- Size effect
ASJC Scopus subject areas
- Catalysis
- General Chemistry