Journal
NANO RESEARCH
Volume 9, Issue 8, Pages 2284-2293Publisher
TSINGHUA UNIV PRESS
DOI: 10.1007/s12274-016-1115-9
Keywords
MoS2; two-dimensional material; water splitting; photocatalysis
Categories
Funding
- National Natural Science Foundation of China [21471160, 51402362]
- Huangdao Key Science and Technology Programme [2014-1-50]
- Shandong Natural Science Foundation [ZR2014EMQ012]
- Qingdao Science and Technology Program for Youth [14-2-4-34-jch]
- Fundamental Research Funds for the Central Universities of Ministry of Education of China
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The design of efficient artificial photosynthetic systems that harvest solar energy to drive the hydrogen evolution reaction via water reduction is of great importance from both the theoretical and practical viewpoints. Integrating appropriate co-catalyst promoters with strong light absorbing materials represents an ideal strategy to enhance the conversion efficiency of solar energy in hydrogen production. Herein, we report, for the first time, the synthesis of a class of unique hybrid structures consisting of ultrathin Co(Ni)-doped MoS2 nanosheets (co-catalyst promoter) intimately grown on semiconductor CdS nanorods (light absorber). The as-synthesized one-dimensional CdS@doped-MoS2 heterostructures exhibited very high photocatalytic activity (with a quantum yield of 17.3%) and stability towards H-2 evolution from the photoreduction of water. Theoretical calculations revealed that Ni doping can increase the number of uncoordinated atoms at the edge sites of MoS2 nanosheets to promote electron transfer across the CdS/MoS2 interfaces as well as hydrogen reduction, leading to an efficient H-2 evolution reaction.
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