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Open AccessArticle

A Composite Photocatalyst Based on Hydrothermally-Synthesized Cu2ZnSnS4 Powders

Department of Materials Science and Engineering, National Cheng Kung University, Tainan 701, Taiwan
Department of Greenergy, National University of Tainan, Tainan 701, Taiwan
Authors to whom correspondence should be addressed.
Materials 2018, 11(1), 158;
Received: 31 October 2017 / Revised: 17 January 2018 / Accepted: 17 January 2018 / Published: 19 January 2018
(This article belongs to the Special Issue Selected Papers from IEEE ICICE 2017)
A novel composite photocatalyst based on Cu2ZnSnS4 (CZTS) powders was synthesized and investigated for use as a photocatalyst. CZTS powders were first made using a conventional hydrothermal method and were then used to grow silver nanoparticles hybridized onto the CZTS under various conditions through a microwave-assisted hydrothermal process. After the obtained samples were subsequently mixed with 1T-2H MoS2, the three synthesized component samples were characterized using X-ray diffractometry (XRD), scanning electron microscopy, transmission electron microscopy (FE-SEM, FE-TEM), UV-visible spectroscopy (UV-Vis), Brunauer-Emmet-Teller (BET), photoluminescence spectroscopy (PL), and X-ray photoelectron spectroscopy (XPS). The resulting samples were also used as photocatalysts for the degradation of methylene blue (MB) under a 300 W halogen lamp simulating sunlight with ~5% UV light. The photodegradation ability was greatly enhanced by the addition of Ag and 1T-2H MoS2. Excellent photodegradation of MB was obtained under visible light. The effects of material characteristics on the photodegradation were investigated and discussed. View Full-Text
Keywords: Cu2ZnSnS4 powders; silver nanoparticles; 1T-2H MoS2; photodegradation Cu2ZnSnS4 powders; silver nanoparticles; 1T-2H MoS2; photodegradation
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Lin, S.-J.; Ting, J.-M.; Hsu, K.-C.; Fu, Y.-S. A Composite Photocatalyst Based on Hydrothermally-Synthesized Cu2ZnSnS4 Powders. Materials 2018, 11, 158.

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