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Phosphated 2D MoS 2 nanosheets and 3D NiTiO 3 nanorods for efficient photocatalytic hydrogen evolution
Author(s) -
Li Hongying,
Wang Guorong,
Gong Haiming,
Jin Zhiliang
Publication year - 2020
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.202000903
Subject(s) - nanorod , photocatalysis , materials science , heterojunction , calcination , photoluminescence , hydrogen production , chemical engineering , hydrothermal circulation , composite number , semiconductor , nanotechnology , charge carrier , catalysis , optoelectronics , composite material , chemistry , organic chemistry , engineering
An efficient and stable NiTiO 3 /MoS 2 −P photocatalyst was prepared with means of hydrothermal and calcination. After optimization, the maximum hydrogen production of the composite sample reached 337.82 μmol in 5 h. After phosphating NiTiO 3 nanorods and MoS 2 , the original structure of 3D nanorods and 2D nanosheets was maintained, which forms a tight interface between the two materials. In addition, the heterojunction established in the NiTiO 3 /MoS 2 −P composite material resulted in good separation of electrons and holes, thereby improving the photocatalytic efficiency under light conditions. Efficient charge transfer efficiency was also confirmed in photoelectrochemical experiments. Furthermore, photoluminescence spectroscopy experiments have confirmed that the formation of heterojunction between the two semiconductors increases the carrier lifetime of the composite catalyst and has efficient separation efficiency. SEM, TEM, BET, UV‐vis DRS and other series of characterization methods were used to characterize the prepared materials.