期刊
ACS OMEGA
卷 2, 期 7, 页码 3745-3753出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsomega.7b00492
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资金
- American Chemical Society through ACS Authors Rewards
In terms of solar hydrogen production, semiconductor-based photocatalysts via p-n heterojunctions play a key role in enhancing future hydrogen reservoir. The present work focuses on the successful synthesis and characterization of a novel p-MoS2/n-CeO2 heterojunction photocatalyst for excellent performance toward solar hydrogen production. The synthesis involves a simple in situ hydrothermal process by varying the wt % of MoS2. The various characterization techniques support the uniform distribution of CeO2 on the surface of crumpled MoS2 nanosheets, and the formation of p-n heterojunction is further confirmed by transmission electron microscopy and Mott-Schottky analysis. Throughout the experiment, it is demonstrated that 2 wt % MoS2 in the MoS2/CeO2 heterojunction photocatalyst exhibits the highest rate of hydrogen evolution with a photocurrent density of 721 mu A cm(-2). The enhanced photocatalytic activity is ascribed to the formation of the p-n heterojunction that provides an internal electric field to facilitate the photogenerated charge separation and transfer.
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