Surfactant-free hydrothermal synthesis of Cu2ZnSnS4 (CZTS) nanocrystals with photocatalytic properties

Jing Wang; Peng Zhang; Xuefeng Song; Lian Gao

doi:10.1039/C4RA03444A

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Surfactant-free hydrothermal synthesis of Cu₂ZnSnS₄ (CZTS) nanocrystals with photocatalytic properties†

Jing Wang,^a Peng Zhang,*^a Xuefeng Song^a and Lian Gao*^a

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* Corresponding authors

^a State Key Lab of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Rd., Shanghai, P.R. China 200240
E-mail: liangao@mail.sic.ac.cn, pengzhang2010@sjtu.edu.cn

Abstract

As a low cost and environment-friendly solar absorber material, Cu₂ZnSnS₄ (CZTS) has aroused great interest for both photovoltaic and photocatalytic applications. The development of low temperature and green chemical route for the preparation of this quaternary sulfide compound still remains a challenge. In the present study, we present a surfactant-free hydrothermal method for the preparation of CZTS nanocrystals with an average size of 12 nm and photoactivity in hydrogen production. Ammonia was proposed to play a key role in confining the particle sizes. The properties of the CZTS nanoparticles were characterized using XRD, Raman, XPS, TEM, and UV-vis absorption. The photocatalytic properties of the as-synthesized CZTS nanoparticles were tested both in thin films and in slurry systems.

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Article information

DOI: https://doi.org/10.1039/C4RA03444A
Article type: Paper
Submitted: 16 Apr 2014
Accepted: 28 May 2014
First published: 28 May 2014

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RSC Adv., 2014,4, 27805-27810

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Surfactant-free hydrothermal synthesis of Cu₂ZnSnS₄ (CZTS) nanocrystals with photocatalytic properties

J. Wang, P. Zhang, X. Song and L. Gao, RSC Adv., 2014, 4, 27805 DOI: 10.1039/C4RA03444A

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