We use several strategies to achieve an efficient separation of charge carriers in the design of the catalysts for photocatalytic water splitting. Narrow-bang-gap semiconductors, SiC and CdS, are loaded on the surface of TiO2; these absorb visible light, and also help the photogenerated holes to move out from TiO2. Furthermore, cocatalysts, NiOx and NiS, are deposited on the surface of TiO2, acting as electron collectors to accelerate hydrogen evolution reaction, while IrO2 and PdS are used as hole capturers in the designs. Carbon fibers are utilized to accelerate the transportation of electrons between the different semiconductors. In addition, we find a novel solid solution, In-Ni-Ta-O-N, in which the separation of the charge carriers is efficient enough because it can split pure water under visible light with a high reaction rate.

Efficient separation of charge carriers in the catalyst design for photocatalytic water splitting

247th National Meeting (2014)

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.