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Nano Research 2018, 11(3): 1379-1388 https://doi.org/10.1007/s12274-017-1752-7
Research Article | Issue | Published: 02 February 2018

Efficient defect-controlled photocatalytic hydrogen generation based on near-infrared Cu-In-Zn-S quantum dots

Show Author's Information Xiao-Yuan Liu1,2,§,  Guozhen Zhang3,§,  Hao Chen1,  Haowen Li2,  Jun Jiang3,  Yi-Tao Long2( ),  Zhijun Ning1( )
School of Physical Science and TechnologyShanghaiTech UniversityShanghai201210China
Key Laboratory for Advanced Materials & School of Chemistry and Molecular EngineeringEast China University of Science and TechnologyShanghai200237China
School of Chemistry and Materials ScienceHefei National Laboratory for Physical Sciences at the Microscale and CAS Key Laboratory of Mechanical Behavior and Design of Materials (LMBD)University of Science and Technology of China (USTC)Hefei230026China

§ Xiao-Yuan Liu and Guozhen Zhang contributed equally to this work.

Keywords:
quantum dots, photocatalysis, hydrogen generation, surface defect
Cite this article:
Liu X-Y, Zhang G, Chen H, et al. Efficient defect-controlled photocatalytic hydrogen generation based on near-infrared Cu-In-Zn-S quantum dots. Nano Research, 2018, 11(3): 1379-1388. https://doi.org/10.1007/s12274-017-1752-7
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Abstract Electronic supplementary material About this article

The development of photocatalysts that can effectively harvest visible light is essential for advances in high-efficiency solar-driven hydrogen generation. Herein, we synthesized water soluble CuInS2 (CIS) and Cu-In-Zn-S (CIZS) quantum dots (QDs) by using one-pot aqueous method. The CIZS QDs are well passivated by glutathione ligands and are highly stable in aqueous conditions. We subsequently applied these QDs as a light harvesting material for photocatalytic hydrogen generation. Unlike most small band gap materials that show extremely low efficiency, these new QDs display remarkable energy conversion efficiency in the visible and near-infrared regions. The external quantum efficiency at 650 nm is ~1.5%, which, to the best of our knowledge, is the highest value achieved until now in the near-infrared region.

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Acknowledgements

Publication history

Received: 25 April 2017
Revised: 27 June 2017
Accepted: 30 June 2017
Published: 02 February 2018
Issue date: March 2018

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© Tsinghua University Press and Springer-Verlag GmbH Germany 2017

Acknowledgements

Acknowledgements

This work is supported by the start-up funding from ShanghaiTech University, the Young 1000 Talents Program, the National Natural Science Foundation of China (Nos. U1632118, 21571129, and 21571129), the National Basic Research Program of China (Nos. 2016YFA0204000 and 2013CB733700), Science and Technology Commission of Shanghai Municipality (Nos. 16JC1402100 and 16520720700) and the National Natural Science Foundation of China for Creative Research Groups (No. 21421004). We thank Dr. Yanyan Jia at the testing center at School of Physical Science and Technology, Protein center.

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