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Citation: BI Lixiao, LIU Zenghua, KONG Desheng, YU Zhangyu, FENG Yuanyuan. Carbon-supported Pt-Ag Bimetallic Catalysts for Methanol Electro-Oxidation Reaction[J]. Chinese Journal of Applied Chemistry, ;2013, 30(1): 107-113. doi: DOI:10.3724/SP.J.1095.2013.20053 shu

Carbon-supported Pt-Ag Bimetallic Catalysts for Methanol Electro-Oxidation Reaction

1.
College of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, China

Corresponding author: YU Zhangyu, FENG Yuanyuan,
Received Date: 21 February 2012
Available Online: 17 April 2012
Fund Project: 山东省优秀中青年科学家奖励基金(BS2011NJ009) (BS2011NJ009)山东省自然科学基金(ZR2010EM026)资助项目 (ZR2010EM026)

A series of alloyed Pt_mAg/C catalysts(m:Pt/Ag atomic ratio,0.05~1.0) were prepared by the co-reduction of K₂PtCl₆ and AgNO₃ precursors with NaBH₄ as the reducing agent.The electrocatalytic performance of the Pt_mAg/C catalysts for the methanol electro-oxidation was investigated.These Pt_mAg/C catalysts after electrochemical dealloying treatment in H₂SO₄ show enhanced catalytic activities for the methanol electro-oxidation and the CO tolerance as compared with the pure Pt/C catalyst,and the catalytic performance is strongly dependent on the catalyst composition(m).The mass-specific activity(MSA),intrinsic activity(IA) and stability of Pt_mAg/C catalysts increase with increasing m up to 0.5.The MSA and IA of Pt_0.5Ag/C catalyst is ca.5.1 and 4.8 times of that of Pt in Pt/C catalyst,respectively.
- platinum,
- silver,
- dealloy,
- acidic electrolyte,
- methanol electro-oxidation
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