Journal
NANO RESEARCH
Volume 8, Issue 1, Pages 175-183Publisher
TSINGHUA UNIV PRESS
DOI: 10.1007/s12274-014-0606-9
Keywords
MoS2; photocatalysis; co-catalyst; metallic; two-dimensional
Categories
Funding
- National Basic Research Program of China [2014CB848900]
- National Natural Science Foundation of China [21101145, 91123010]
- Hok Ying Tung Education Foundation [131012]
- Specialized Research Fund for the Doctoral Program of Higher Education [20123402110050]
- Recruitment Program of Global Experts
- CAS
- Fundamental Research Funds for the Central Universities [WK2060190025, WK2310000035]
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Electron-hole separation is a critical step to achieving efficient photocatalysis, towards which use of co-catalysts has become a widely used strategy. Despite the tremendous efforts and demonstrated functions of noble metal co-catalysts, seeking noble metal-free co-catalysts will always be the goal when designing cost-effective, high-performance hybrid photocatalysts. In this work, we demonstrate that MoS2 nanosheets with 1T phase (i.e., octahedral phase) can function as a co-catalyst with multiple merits: (1) Noble-metal-free; (2) high mobility for charge transport; (3) high density of active sites for H-2 evolution on basal planes; (4) good performance stability; (5) high light transparency. As demonstrated in both photocatalytic hydrogen production and Rhodamine B degradation, the developed hybrid structure with TiO2 exhibits excellent performance, in sharp contrast to bare TiO2 and the hybrid counterpart with 2H-MoS2.
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