Preparation of C@WC Supporter with a Core-shell Structure and Pd/C@WC Catalyst for Formic Acid Electrooxidation

doi:10.3724/SP.J.1095.2014.30631

Chinese Journal of Applied Chemistry

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Preparation of C@WC Supporter with a Core-shell Structure and Pd/C@WC Catalyst for Formic Acid Electrooxidation

QI Zengxin, DENG Chao, WU Bing, GAO Ying^*

(College of Chemistry and Chemical Engineering,Harbin Normal University,Harbin 150025,China)

Received:2013-12-11 Revised:2014-01-03 Published:2014-09-04 Online:2014-09-04
Contact: GAO Ying

Abstract

Abstract: The support of C@WC core-shell structure is prepared with activated carbon as carbon source, in situ generation tungsten carbide coating on the surface of carbon material. TEM results confirm that the prepared C@WC is coreshell structure. The composition of the shell is mainly WC containing a small amount of W. BET specific surface measurement results show that the specific surface area of C@WC is smaller than that of XC-72R, but with more of the mesoporous structure. The electrochemical surface area of Pd/C@WC is 65.47 m2/g. The Pd/C@WC catalyst electrode is more active for formic acid oxidation than Pd/C. The peak current density on Pd/C@WC is 0.222 A/cm2 which is about 0.128 A/cm2 higher than that on Pd/C. The multiple cyclic voltammograms results show that Pd/C@WC catalyst electrode has higher activity and stability compared with Pd/C for formic acid electrooxidation.

Key words: palladium, tungsten carbide, formic acid oxidation, support

CLC Number:

O646

QI Zengxin, DENG Chao, WU Bing, GAO Ying*. Preparation of C@WC Supporter with a Core-shell Structure and Pd/C@WC Catalyst for Formic Acid Electrooxidation[J]. Chinese Journal of Applied Chemistry, DOI: 10.3724/SP.J.1095.2014.30631.

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Preparation of C@WC Supporter with a Core-shell Structure and Pd/C@WC Catalyst for Formic Acid Electrooxidation

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