| 二氧化碳在P^＋／P—Si半导体电极上光电化学还原的研究 |
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| 引用本文： | 淳于宝珠 刘俊福. 二氧化碳在P^＋／P—Si半导体电极上光电化学还原的研究[J]. 感光科学与光化学, 1992, 10(2): 180-184 |
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| 作者姓名： | 淳于宝珠 刘俊福 |
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| 作者单位： | 山东大学化学系，山东大学化学系 济南 250100，济南 250100 |
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| 摘 要： | 1870年,Royer使用Zn电极将CO_2还原为HCOOH。近年来,人们对CO_2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CO_2在金属电极上还原的过电位较大,导致耗电较多。而半导体电极能吸收光能降低CO_2还原的过电位,所以人们对CO_2在半导体电极上的光电还原进行了探讨,使用的光阴极材料有P-GaP,P-GaAs,P-InP,P-CdTe。半导体Si的禁带宽度E_g=1.12eV,
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| 关 键 词： | 二氧化碳 半导体 P^＋／P－Si 光阴极 |
STUDIES ON THE PHOTOELECTROCHEMICAL REDUCTION OF CARBON DIOXIDE ON P~+/P-SILICON ELECTRODE |
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| CHUN Yu BAO-CHU LIU JUN-FU. STUDIES ON THE PHOTOELECTROCHEMICAL REDUCTION OF CARBON DIOXIDE ON P~+/P-SILICON ELECTRODE[J]. Photographic Science and Photochemistry, 1992, 10(2): 180-184 |
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| Authors: | CHUN Yu BAO-CHU LIU JUN-FU |
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| 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. |
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| Keywords: | Reduction of carbon dioxide P+/P-Si Photocathode Solar energy conversion |
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