Abstract
Different template routes were applied for the fabrication of two types of mesoporous tungsten carbide/carbon (WC/C) assisted with a microwave heating method. One was WC/C–F using triblock copolymer Pluronic F127 (PEO106PPO70PEO106) as soft template and the other was WC/C–S using mesoporous silica SBA-15 as hard template. In our study, sucrose was used as the carbon source for both tungsten carbide and carrier carbon. With loading small amount of Pt, two catalysts (Pt–WC/C–F and Pt–WC/C–S) exhibit better performance than the commercial Pt/C for methanol oxidation. Meanwhile the Pt–WC/C–F catalyst presents higher activity and stability than does the Pt–WC/C–S which is ascribed to the appropriate pore size adjusted by the different template routes.
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