Single semiconductors, which even have an ideal band gap, can absorb sunlight only in a limited spectral range. In addition, many of single semiconductor-based photoelectrodes and photocatalysts still suffer poor charge mobility and low catalytic activity. Therefore, there is a strong incentive to develop semiconductor heterojunctions for solar water splitting.  In our recent studies, the metal oxides have been deposited on the reduced graphene oxide nanosheets to improve charge mobility and charge separation.  Also, metal oxides have been functionalized with metal-organic framework to promote charge extrication.  In addition, metal oxides have been coupled with quantum dot to form a Type-II semiconductor heterojunction to expand the light absorption range and to promote charge transfer. Moreover, metal oxides have been incorporated with plasmonic metal nanostructures to enhance light absorption and electron-hole generation.<br/>

Semiconductor heterojunctions for solar water splitting

256th National Meeting (2018)

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