期刊
JOURNAL OF PHYSICAL CHEMISTRY C
卷 114, 期 33, 页码 14220-14223出版社
AMER CHEMICAL SOC
DOI: 10.1021/jp105171b
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- DARPA
Hydrogen-terminated p-type silicon was used as a photocathode for the selective photoreduction of CO2 to CO in the presence of Re(bipy-Bu')(CO)(3)Cl (bipy-Bu' = 4,4'-di-tert-butyl-2,2'-bipyriciine) as an electrocatalyst. The reduction of CO2 to CO on p-type silicon was achieved at a potential more than 600 mV lower than that required with a Pt electrode. A Faradaic efficiency of 97 +/- 3% and an overall efficiency of 9.3% and 10% for the conversion of monochromatic and polychromatic light, respectively, to electricity were observed for the CO2 photoreduction process. A short-circuit quantum efficiency of 61% for light-to-chemical energy conversion was observed for the conversion of CO2 to CO.
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