Journal
CATALYSTS
Volume 9, Issue 4, Pages -Publisher
MDPI
DOI: 10.3390/catal9040379
Keywords
MoS2 nanosheets; CdS nanoparticle; heterostructure; photocatalysis; photoelectrochemical properties
Categories
Funding
- Provincial Natural Science Foundation of Guangdong Province, China [2017A030310064]
- National Natural Science Foundation of China [61307080, 61404052, 51372092, 51672090]
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High-rate recombination of photogenerated electron and hole pairs will lead to low photocatalytic activity. Constructing heterostructure is a way to address this problem and thus increase the photoelectrochemical performance of the photocatalysts. In this article, molybdenum sulfide (MoS2)/cadmium sulfide (CdS) nanocomposites were fabricated by a facile solvothermal method after sonication. The CdS nanoparticles immobilized on the MoS2 sheet retained the original crystal structure and morphology. The composites exhibit higher photoelectrochemical properties compared with pure MoS2 nanosheets or CdS powder. When the precursor concentration of CdS is 0.015 M, the MoS2/CdS composites yield the highest photocurrent, which is enhanced nearly five times compared with pure CdS or MoS2. The improved photoelectrochemical performance can be ascribed to the increase of light harvest, as well as to the heterostructure that decreases the recombination rate of the photogenerated electron and hole pairs.
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