Journal
RSC ADVANCES
Volume 5, Issue 107, Pages 88409-88413Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ra14374h
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Funding
- 973 Programs [2014CB239302, 2011CB933303, 2013CB632404]
- National Natural Science Foundation of China [21473091, 51272101, 51202005, 21473082]
- National Science Foundation of Jiangsu Province [BK2012015, BK 20130053, 20130425]
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Mimicking natural photosynthesis in green plants, an all-solid-state Z-scheme was constructed for photocatalytic reduction of CO2 in the presence of water vapor, consisting of CdS nanospheres (CdS NSs) and TiO2 nanoparticles as photocatalysts, and reduced graphene oxide (rGO) as a solid electron mediator. In this Z-scheme system, the photogenerated electrons from the conduction band of TiO2 transfer to rGO, and then recombine with the existing holes of CdS NSs, allowing the photo-generated electrons to enrich on the CdS semiconductor and holes on the TiO2. The photocatalytic efficiency of the Z-scheme system exhibits remarkable enhancement relative to pure CdS, CdS/TiO2, and CdS/rGO.
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