高等学校化学学报

高等学校化学学报 ›› 1992, Vol. 13 ›› Issue (5): 666.

• 论文 • 上一篇    下一篇

二氧化碳在铜氧化膜电极上的光电化学还原

罗瑾, 林仲华, 田昭武   

  1. 厦门大学固体表面物理化学国家重点实验室, 化学系, 厦门, 361005
  • 收稿日期:1991-06-20 出版日期:1992-05-24 发布日期:1992-05-24
  • 通讯作者: 罗瑾
  • 基金资助:

    国家自然科学基金

CO2 Photoelectrochemical Reduction at Copper Anode Oxide Film

LUO Jin, LIN Zhong-hua, TIAN Zhao-wu   

  1. State Key laboratory for Physical Chemistry of the Solid Surface, Department of Chemistry, Xiamen University, Xiamen, 361005
  • Received:1991-06-20 Online:1992-05-24 Published:1992-05-24

PDF (PC)

被引次数

5

摘要： 本文研究了CO2在铜阳极氧化膜电极上的光电化学还原行为,在还原电量小于0.1C时,CH4的产率较高;还原电量大于2.0C时,主要还原产物为CH3OH,还对CH4的产率随外加电位、还原电量和铜阳极氧化膜制备条件的变化关系进行了研究,并对其还原机理作了初步探讨。

关键词: 二氧化碳, 钢阳极氧化膜, 光电化学还原

Abstract: The photoelectrochemical reduction of CO2 was studied at copper anode oxide film.The anodic oxide film on copper electrode consists of Cu2O and CuO, which are p-type semiconductors.In the case of lower electric quantity (Q<0.10 C) for reduction, the higher Faradaic efficiencies for CH4 were achieved on the film, and in the case of higher electric quantity for reduction, however, CH3OH was the main product.The Faradaic efficiency for CH4 as a function of the applied potential, the electric quantity for reduction and the condition of forming the anodic oxide film were determined.The preliminary mechanism of CO2 photoelectrochemical reduction is presented.

Key words: Carbon dioxide, Copper anode oxide film, Photoelectrochemical reduction

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