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电化学(中英文) ›› 2006, Vol. 12 ›› Issue (1): 20-24. 

• 研究论文 • 上一篇    下一篇

葡萄糖在纳米Pt/C电极上的电催化氧化

陈翠莲;魏小兰;沈培康;   

  1. 漳州职业技术学院食品与食品生物工程系,中山大学物理科学与工程技术学院,中山大学物理科学与工程技术学院 福建漳州363000,广东广州510275,现在通讯地址:华南理工大学理学院,广东广州,广东广州510275
  • 收稿日期:2006-02-28 修回日期:2006-02-28 出版日期:2006-02-28 发布日期:2006-02-28

Electrocatalytic Oxidation of Glucose on Nano Pt/C Electrode

CHEN Cui-lian~   

  1. (l),WEI Xiao-lan~(**2),SHEN Pei Kang~(*2)(1.Department of Foodand Bioengineering,Institute of Technology of Zhangzhou,Zhangzhou 363000,Fujian,China,2.School of Physics and Engineering,Sun Yat-Sen University,Guangzhou 510275,Guangdong,China
  • Received:2006-02-28 Revised:2006-02-28 Published:2006-02-28 Online:2006-02-28

摘要: 用交替微波法制备纳米PVC催化剂,研究和比较葡萄糖在光亮Pt和纳米Pt/C电极上的氧化行为.实验表明,Pt纳米化后,电极反应过电位降低,动力学速率相应提高,从而使电化学性能得到改善.其催化活性和抗毒化能力大于光亮Pt的可能原因即在Pt纳米化后,大幅度提高了表面积,结果不仅增加其电极活性,而且含氧物也容易接近受毒化的反应点,从而较易氧化毒化物而使电极再次活化.

关键词: 燃料电池, 葡萄糖, 电催化, Pt/C电极, 纳米材料

Abstract: Nano Pt/C electrocatalysts were prepared by intermittent microwave heating method.The electrooxidation of glucose on smooth Pt and~Pt/C electrodes has been studied and compared.The results showed that the electrochemical properties on nano Pt/C were improved due to the reduction of the overpotential and the increase in the kinetic rate.The surface area would be significantly increased when the particle size of the catalyst was reduced to nano-scale,resulting in the increase in the activity.The enhancement in the resistance to poisoning could be explained that the oxygen-containing species are easier to react with poisoning species on nano Pt/C and re-active the electrode.

Key words: Fuel cells, Glucose, Electrocatalysis, Pt electrode, Nanomaterials

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