Issue 51, 2015

Quaternary semiconductor Cu2ZnSnS4 loaded with MoS2 as a co-catalyst for enhanced photo-catalytic activity

Abstract

Quaternary Cu2ZnSnS4 (CZTS) loaded with 1% MoS2 shows excellent photo-catalytic activity for water oxidation, leading to efficient H2 generation (AQY 22.67%), as well as in the degradation of an organic pollutant. The photo-catalysts were characterized using powder X-ray diffraction, field emission scanning electron microscopy, transmission electron microscopy, UV-Vis absorbance and fluorescence spectroscopy. Taking Rhodamine B as a model system, the apparent rate constant for CZTS–MoS2 (i.e. kapp ∼ 0.066 min−1) is nearly two-fold higher in comparison to CZTS (kapp ∼ 0.032 min−1). Various scavenger tests have been performed to establish the role of O2˙ and ˙OH scavengers in the photo-degradation of a pollutant.

Graphical abstract: Quaternary semiconductor Cu2ZnSnS4 loaded with MoS2 as a co-catalyst for enhanced photo-catalytic activity

Supplementary files

Article information

Article type
Paper
Submitted
24 Feb 2015
Accepted
09 Apr 2015
First published
09 Apr 2015

RSC Adv., 2015,5, 40475-40483

Author version available

Quaternary semiconductor Cu2ZnSnS4 loaded with MoS2 as a co-catalyst for enhanced photo-catalytic activity

G. Gogoi, S. Arora, N. Vinothkumar, M. De and M. Qureshi, RSC Adv., 2015, 5, 40475 DOI: 10.1039/C5RA03401A

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