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In situ Integration of a Metallic 1T‐MoS 2 /CdS Heterostructure as a Means to Promote Visible‐Light‐Driven Photocatalytic Hydrogen Evolution
Author(s) -
Liu Qin,
Shang Qichao,
Khalil Adnan,
Fang Qi,
Chen Shuangming,
He Qun,
Xiang Ting,
Liu Daobin,
Zhang Qun,
Luo Yi,
Song Li
Publication year - 2016
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.201600504
Subject(s) - heterojunction , photocatalysis , materials science , nanorod , nonmetal , photoluminescence , semiconductor , nanotechnology , noble metal , metal , chemical engineering , optoelectronics , chemistry , catalysis , metallurgy , biochemistry , engineering
The replacement of expensive noble‐metals cocatalysts with inexpensive, earth‐abundant, metallic nonmetal materials in most semiconductor‐based photocatalytic systems is highly desirable. Herein, we report the fabrication of stable 1T‐MoS 2 slabs in situ grown on CdS nanorods (namely, 1T‐MoS 2 @CdS) by using a solvothermal method. As demonstrated by ultrafast transient absorption spectroscopy, in combination with steady‐state and time‐resolved photoluminescence, the synergistic effects resulting from formation of the intimate nanojunction between the interfaces and effective electron transport in the metallic phase of 1T‐MoS 2 largely contribute to boosting the photocatalytic activity of CdS. Notably, the heterostructure with an optimum loading of 0.2 wt % 1T‐MoS 2 exhibits an almost 39‐fold enhancement in the photocatalytic activity relative to that exhibited by bare CdS. This work represents a step towards the in situ realization of a 1T‐phase MoS 2 ‐based heterostructure as a promising cocatalyst with high performance and low cost.