Journal
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
Volume 104, Issue 10, Pages 5307-5316Publisher
WILEY
DOI: 10.1111/jace.17883
Keywords
charge separation; cocatalysts; glucose; H-2 production; heterojunction; multiple components
Categories
Funding
- Natural Science Foundation of Anhui Province for Distinguished Young Scholars [1808085J24]
- Anhui Province for Excellent Young Talents in Universities [gxyq2019029]
- National Natural Science Foundation of China [51972134, 51772118, 21607027, 52002142]
- Opening Project of Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention [FDLAP19007]
- University Projects of Scientific Research [KJ2018A0387, KJ2019A0601, KJ2019A0602, KJ2020A0126]
- Cultivating Outstanding Talents [gxbjZD2020066]
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This research successfully combined NiS-modified CdS nanorods with MoS2 and NiPx cocatalysts to achieve efficient H2 production. The synergistic effects of heterostructure and cocatalysts are key factors in enhancing photocatalytic performance.
Constructing multi-component photocatalyst is an efficient method to achieve high photocatalytic efficiency. In this work, CdS nanorods modified with NiS nanoparticles are first prepared to improve the photocatalytic performance, as no H-2 generates on single NiS or CdS catalyst from glucose solution. MoS2 and NiPx, as the cocatalysts for H-2 production, are loaded on the surface of NiS/CdS composite. With step-by-step solvothermal synthesis, four components (CdS, NiS, Mo2S, and NiPx) are fully combined in the NiPx/MoS2/NiS/CdS nanorods, generating many intimate contact interfaces. Moreover the optimized NiPx/MoS2/NiS/CdS performs a significantly increased photocatalytic activity, with H-2 production rate at 297 mu mol h(-1) g(-1). The synergistic effects of heterostructure (NiS/CdS) and cocatalysts (MoS2 and NiPx) are the main reasons in enhancing photocatalytic performance, which facilitate the separation of charge carriers and prolong their lifetimes. This work provides an effective strategy to design photocatalysts with multiple components and fast charge separation for highly efficient H-2 production.
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