Journal
SOLAR ENERGY MATERIALS AND SOLAR CELLS
Volume 108, Issue -, Pages 170-174Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.solmat.2012.09.024
Keywords
Carbon dioxide; Methanol; Solar-driven; Photoelectrochemical reduction; CuInS2 thin film; Cu-In alloy
Funding
- National Natural Sciences Foundation of China [20776013]
- Beijing Natural Science Foundation [2102034]
- Special Fund of Basic Research in Central Universities [1107]
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The reduction of CO2 into solar fuel is not only beneficial to the reduction of CO2 emission, but also beneficial to the release of energy shortage. In this study, a solar-driven photoelectrochemical reduction reaction of CO2 to methanol is conducted using a chalcopyrite p-CuInS2 thin film as a photocathode. The CuInS2 thin film is fabricated by electrodeposition of Cu-In alloy layer followed by sulfurization. With pyridinium ion as the co-catalyst, the photoelectrochemical reduction of CO2 to methanol can occur at the overpotential of 20 mV with the faradaic efficiency of 97%. (C) 2012 Elsevier B.V. All rights reserved.
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