Ultra-long Pt nanolawns supported on TiO2-coated carbon fibers as 3D hybrid catalyst for methanol oxidation
1 Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei, 106, Taiwan
2 Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei, 106, Taiwan
3 Department of Materials Science and Engineering, National Chung Hsing University, Taichung, 402, Taiwan
4 Department of Materials Science and Engineering, National Cheng Kung University, Tainan, 701, Taiwan
Nanoscale Research Letters 2012, 7:237 doi:10.1186/1556-276X-7-237Published: 30 April 2012
In this study, TiO2 thin film photocatalyst on carbon fibers was used to synthesize ultra-long single crystalline Pt nanowires via a simple photoreduction route (thermally activated photoreduction). It also acted as a co-catalytic material with Pt. Taking advantage of the high-aspect ratio of the Pt nanostructure as well as the excellent catalytic activity of TiO2, this hybrid structure has the great potential as the active anode in direct methanol fuel cells. The electrochemical results indicate that TiO2 is capable of transforming CO-like poisoning species on the Pt surface during methanol oxidation and contributes to a high CO tolerance of this Pt nanowire/TiO2 hybrid structure.