A new biomass template to prepare multi-channel structure of WO3 and its application for methanol electro-oxidation
| Autor: | Pian-Pian Yang, Meiqin Shi, Guang-Hui Song, Youqun Chu, Chunan Ma |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
chemistry.chemical_classification
Materials science Mechanical Engineering Inorganic chemistry Biomaterial Condensed Matter Physics Electrochemistry Microstructure Catalysis law.invention Electron transfer chemistry.chemical_compound chemistry Polyol Mechanics of Materials law General Materials Science Calcination Methanol |
| Zdroj: | Materials Letters. 153:124-127 |
| ISSN: | 0167-577X |
| DOI: | 10.1016/j.matlet.2015.04.014 |
| Popis: | Reed was used as the template and its unique multi-channel structure was fully duplicated on the WO3 particles by simple impregnation and calcination. The prepared WO3 particles which have multi-channel structure (mc-WO3) were evaluated as a support for methanol electro-oxidation. 10 wt% Pt was loaded on the mc-WO3 support by employing microwave-assisted polyol strategy. The morphological characterizations suggest that Pt is homogeneously dispersed on mc-WO3 with an average size of 3.3 nm. Electrochemical studies indicate that the electro-catalytic performance of the synthesized catalyst is better for methanol electro-oxidation compared with that of commercial Pt/C. This improved activity can be attributed to the enhanced H-spillover effect caused by the increased interface between Pt and WO3 in the multi-channel structure of catalysts. It is also found that the multi-channel structure of WO3 could facilitate the electron transfer and mass transport during the electrochemical reaction. |
| Databáze: | OpenAIRE |
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