Journal
MATERIALS RESEARCH BULLETIN
Volume 102, Issue -, Pages 433-439Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.materresbull.2018.02.055
Keywords
Visible Photocatalysis; MoS2; g-C3N4; Heterojunction; ROS
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Funding
- National Natural Science Foundation of China [51372120]
- China Postdoctoral Science Foundation [2017M611149]
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A series of MoS2/g-C3N4 photocatalysts were prepared by modifying g-C3N4 with different concentration of MOS2 via a water exfoliation method. The crystal structure, morphology, band structure of heterojunction, behaviors of charge carries and the redox ability were characterized by XRD, HR-TEM, absorption spectra, XPS, PL, cyclic voltammetry curves and transient photocurrent spectra. It is revealed that the introduction of MoS2 on the surface of g-C3N4 nanosheets to form micro-heterojunction could enhance the visible response and separate photogenerated charge carriers effectively. Moreover, the ability of the photocatalyst for generating reactive oxygen species (ROS, such as O-2(-) and center dot OH) was also investigated. Therefore, MoS2/g-C3N4 samples exhibit better photocatalytic performance for the photodegradation of HCHO than g-C3N4 and MoS2 under visible irradiation.
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