期刊
MATERIALS RESEARCH BULLETIN
卷 64, 期 -, 页码 370-374出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.materresbull.2015.01.008
关键词
Chalcogenides; Solvothermal; Electron microscopy; X-ray diffraction; Catalytic properties
资金
- National Natural Science Foundation of China [21171145]
CuS/ZnS composite particles with diameter of 200-400 nm were successfully prepared by a simple cation-exchange reaction using ZnS spheres as a precursor. CuS nanoparticles with a few nanometers in diameter were observed on the surface of composite particles. The synthesized CuS/ZnS composite particles showed photocatalytic property effective for H-2 evolution from an aqueous Na2S and Na2SO3 solution under visible light irradiation without any cocatalysts. The rate of H-2 generation was found to be strongly dependent on the CuS content. The highest rate of H-2 evolution reached 695.7 mu mol h(-1) g(-1), which was almost 7 times as high as that of the mechanical mixture of CuS and ZnS. The enhancement in the photocatalytic activity of CuS/ZnS composite particles is supposed to be due to the direct interfacial charge transfer of the CuS/ZnS heterojunction. (C) 2015 Elsevier Ltd. All rights reserved.
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