Journal
CATALYSIS SCIENCE & TECHNOLOGY
Volume 9, Issue 15, Pages 4010-4016Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9cy00901a
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Funding
- Guangxi University
- Guangxi Key Laboratory of Processing for Non-Ferrous Metals and Featured Materials
- Project of Improving the Basic Ability of Young Teachers in Guangxi Colleges and Universities [2019KY0001]
- Xiamen University Malaysia
- Xiamen University Malaysia Research Fund [XMUMRF/2019-C3/IENG/0013]
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Developing cost-effective, highly efficient and stable visible-light photocatalysts towards photocatalytic hydrogen (H-2) production from water splitting is critical for the conversion of renewable solar energy to chemical fuels. Herein, hierarchical flower-like ZnIn2S4 was synthesized by using a hydrothermal method, and subsequently coupled with Ni12P5 nanoparticles via a facile solution-phase method. Benefitting from the incorporation of nanostructured Ni12P5, which effectively facilitates charge separation and provides active sites for photocatalytic H-2 evolution, the as-prepared ZnIn2S4/Ni12P5 composite photocatalysts show high performance for H-2 production from aqueous solutions of Na2S/Na2SO3 under visible light irradiation. In particular, the ZnIn2S4/Ni12P5 sample with an optimal loading of Ni12P5 exhibits a maximum H-2 evolution rate of 2263 mu mol h(-1) g(-1) with an extremely high apparent quantum yield (AQY) of 20.5% at 420 nm. More importantly, the enhanced photocatalytic performance of the ZnIn2S4/Ni12P5 heterojunction was investigated by using photoelectrochemical (PEC) measurements. In short, this work highlights the importance of the interfacial design of transition metal phosphide-decorated ternary metal sulfide semiconductors towards efficient and stable photocatalysis.
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