影像科学与光化学 ›› 1992, Vol. 10 ›› Issue (2): 180-184.DOI: 10.7517/j.issn.1674-0475.1992.02.180

• 研究简报 • 上一篇    下一篇

二氧化碳在P+/P-Si半导体电极上光电化学还原的研究

淳于宝珠, 刘俊福   

  1. 山东大学化学系, 济南 250100
  • 收稿日期:1990-12-27 修回日期:1991-05-28 出版日期:1992-05-20 发布日期:1992-05-20
  • 通讯作者: 刘俊福
  • 基金资助:
    国家自然科学基金

STUDIES ON THE PHOTOELECTROCHEMICAL REDUCTION OF CARBON DIOXIDE ON P+/P-SILICON ELECTRODE

CHUN YU BAO-CHU, LIU JUN-FU   

  1. Department of Chemistry, Shandong University, Jinan 250100, P.R. China
  • Received:1990-12-27 Revised:1991-05-28 Online:1992-05-20 Published:1992-05-20

摘要: 1870年,Royer使用Zn电极将CO2还原为HCOOH。近年来,人们对CO2在几十种金属电极上的电化学还原进行了深入的研究。但普遍存在的问题是CO2在金属电极上还原的过电位较大,导致耗电较多。

关键词: 二氧化碳还原, P+/P-Si光阴极, 太阳能转换

Abstract: The photoelectrochemical reduction of carbon dioxide on P+/P-silicon electrode in aqueous solution was reported. The effects of cathodic polarization potential, electrolysis time and electrolyte pH, were studied by means of electrochemical voltammetry and prolonged electrolysis. The cathodic reduction products were formic acid and a small amount of formaldehyde. A power energy conversion efficiency of 4.0% of carbon dioxide reduction was achieved. Also the photoelectrochemical reduction process of carbon dioxide was discussed.

Key words: Reduction of carbon dioxide, P+/P-Si Photocathode, Solar energy conversion