Studies on Electrocatalytic Performance of TitaniuMOxide Electrode Modified with Pt Toward Oxidation of CO

Chem. J. Chinese Universities ›› 2003, Vol. 24 ›› Issue (12): 2263.

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Studies on Electrocatalytic Performance of TitaniuMOxide Electrode Modified with Pt Toward Oxidation of CO

LIU Jing-Hua¹, YU Chun-Bo¹, WANG Yu-Jiang¹, XING Wei¹, LU Tian-Hong¹, ZHOU Yong-qing²

1. Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China;
2. Handan Particular-energy & Environment-protection Research Institute of CSIC, Handan 056027, China

Received:2002-08-05 Online:2003-12-24 Published:2003-12-24

Abstract

Abstract: Electrocatalytic performance of the Pt-TiO_x/Ti electrode prepared with electrochemical reduction-oxidation method toward the oxidation of CO was studied. The effects of preparation conditions on the electrocatalytic oxidation of CO were also investigated. The experimental results show that the Pt-TiO_x/Ti electrode has a high electrocatalytic activity, which was manifested through the negative shift of the peak potentiaLIn the positive scanning of the cyclic voltammogram, and good stability for the electrocatalytic oxidation of CO. By means of XPS techniques, it is found that the Pt in the Pt-TiO_x/Ti electrode is in a state of metal and the Ti is in a state of TiO_x. The reason for the electrode to exhibit an excellent performance is attributed to the high dispersion between nanosized Pt and TiO_xparticles and the low adsorption ability of the CO on the electrode surface is due to the interaction between Pt and TiO_x.

Key words: CO, Pt-TiO₂/Ti electrode, Electrocatalytic oxidation

CLC Number:

O646

TrendMD:

LIU Jing-Hua, YU Chun-Bo, WANG Yu-Jiang, XING Wei, LU Tian-Hong, ZHOU Yong-qing . Studies on Electrocatalytic Performance of TitaniuMOxide Electrode Modified with Pt Toward Oxidation of CO[J]. Chem. J. Chinese Universities, 2003, 24(12): 2263.

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Studies on Electrocatalytic Performance of TitaniuMOxide Electrode Modified with Pt Toward Oxidation of CO

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