Effect of Halide Ions on the Morphology and the Electrocatalytic Activity of Platinum Nanoparticles Prepared by Electrodeposition

Acta Chimica Sinica ›› 2011, Vol. 69 ›› Issue (11): 1301-1307. Previous Articles Next Articles

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电沉积法制备铂纳米粒子过程中卤素阴离子对粒子形貌及电催化性质的影响

刘云彦，刁鹏*，项民

(北京航空航天大学材料科学与工程学院空天材料与服役教育部重点实验室北京 100191)

投稿日期:2010-10-25 修回日期:2011-01-12 发布日期:2011-01-27
通讯作者: 刁鹏 E-mail:pdiao@buaa.edu.cn
基金资助:
化学组装技术与电化学辅助的表面有序纳米结构的可控制备;微区分域电极体系的制备及电化学性质研究;新世纪优秀人才支持计划

Effect of Halide Ions on the Morphology and the Electrocatalytic Activity of Platinum Nanoparticles Prepared by Electrodeposition

LIU Yun-Yan, DIAO Peng, XIANG Min

(Key Laboratory of Aerospace Materials and Performance (Ministry of Education), School of Materials Science and Engineering, Beihang University, Beijing 100191)

Received:2010-10-25 Revised:2011-01-12 Published:2011-01-27
Contact: Diao Peng E-mail:pdiao@buaa.edu.cn

The morphology of Pt nanoparticles can be well controlled by introduction of halide ions during electrochemical deposition of platinum. Spherical, flake and cubic Pt nanoparticles were obtained on conductive substrates by the addition of chloride, bromide and iodide into electrodeposition system, respectively. The origin of the halide-dependent morphology of Pt nanoparticles was discussed. The electrocatalytic properties of Pt nanoparticles were investigated and it was found that the introduction of halide ions significantly lowers the catalytic activity of Pt nanoparticles toward methanol electrooxidation. The catalytic activity of Pt nanoparticles can be greatly improved by an electrochemical oxidation procedure in which the adsorbed halide ions can be partially or totally removed from the surface of Pt nanoparticles.

Key words: platinum nanoparticle, electrodeposition, halide ion, methanol, electrocatalytic oxidation

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LIU Yun-Yan, DIAO Peng, XIANG Min. Effect of Halide Ions on the Morphology and the Electrocatalytic Activity of Platinum Nanoparticles Prepared by Electrodeposition[J]. Acta Chimica Sinica, 2011, 69(11): 1301-1307.

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电沉积法制备铂纳米粒子过程中卤素阴离子对粒子形貌及电催化性质的影响

Effect of Halide Ions on the Morphology and the Electrocatalytic Activity of Platinum Nanoparticles Prepared by Electrodeposition

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