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MoS 2 co‐catalyst sensitized 3D TiO 2 /CdS photoanodes with enhanced photoelectrochemical performances
Author(s) -
Li Hongxia,
Cheng Mingliang,
Zhang Jian,
Liu Xianguo,
Zhang Xuefeng
Publication year - 2020
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.17309
Subject(s) - photocurrent , heterojunction , materials science , visible spectrum , hydrothermal circulation , catalysis , absorption (acoustics) , quantum dot , chemical engineering , photocatalysis , electron transfer , hydrothermal synthesis , optoelectronics , nanotechnology , ionic bonding , photochemistry , chemistry , ion , composite material , biochemistry , organic chemistry , engineering
Regulating morphology and constructing heterojunctions to enhance the light absorption and boost the separation of electrons and holes are common and effective means to boost the photoelectrochemical (PEC) performances of TiO 2 photoanodes. In this study, TiO 2 nanoflowers (NFs)/CdS quantum dots (QDs)/MoS 2 nanosheets (NSs) hybrids with two type II band alignments were synthesized by facile hydrothermal, successive ionic layer adsorption and reaction, and dipping methods, respectively. The effects of different amount of MoS 2 co‐catalysts on CdS decorated TiO 2 photoanodes were investigated. TiO 2 NFs/CdS QDs/MoS 2 NSs hybrids showed dramatically enhanced PEC performance, especially under visible light illumination. The photocurrent density of TiO 2 NFs/CdS QDs/MoS 2 ‐50 was more than 10 times higher than that of TiO 2 NFs/CdS QDs. This innovative work sheds light on efficiently improving the light absorption by forming heterojunctions and accelerating the electron and hole transfer via specific band engineering design.