Journal
CHEMCATCHEM
Volume 8, Issue 16, Pages 2614-2619Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cctc.201600504
Keywords
heterostructures; hydrogen; metallic molybdenum sulfides; photocatalysis; nanostructures
Categories
Funding
- National Basic Research Program of China [2014CB848900]
- National Natural Science Foundation of China [U1232131, U1532112, 11375198, 11574280, 21573211, 21421063]
- Fundamental Research Funds for the Central Universities [WK2310000053, WK2340000063]
- Strategic Priority Research Program Of the Chinese Academy of Sciences [XDB01020000]
- User with Potential from CAS Hefei Science Center [2015HSC-UP020]
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education) Nankai University
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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-MoS2 slabs in situ grown on CdS nanorods (namely, 1T-MoS2@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-MoS2 largely contribute to boosting the photocatalytic activity of CdS. Notably, the heterostructure with an optimum loading of 0.2 wt% 1T-MoS2 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 MoS2-based heterostructure as a promising cocatalyst with high performance and low cost.
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