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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 H2 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 H2 evolution reaction.

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nr-9-8-2284_ESM.pdf (2.2 MB)
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Publication history

Received: 21 February 2016
Revised: 19 April 2016
Accepted: 21 April 2016
Published: 13 June 2016
Issue date: August 2016

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© Tsinghua University Press and Springer-Verlag Berlin Heidelberg 2016

Acknowledgements

Acknowledgements

The authors gratefully acknowledge the financial support by the National Natural Science Foundation of China (Nos. 21471160 and 51402362), Huangdao Key Science and Technology Programme (Contract No. 2014-1-50), Shandong Natural Science Foundation (No. ZR2014EMQ012), Qingdao Science and Technology Program for Youth (No. 14-2-4-34-jch), and the Fundamental Research Funds for the Central Universities of Ministry of Education of China.

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Reprints and Permission requests may be sought directly from editorial office.
Email: nanores@tup.tsinghua.edu.cn

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