Issue 49, 2022
From the journal:

RSC Advances

A highly active Z-scheme SnS/Zn2SnO4 photocatalyst fabricated for methylene blue degradation†

Yingjing Wang,a   Fen Xu, ORCID logo *a   Lixian Sun, ORCID logo *a   Yaying Li,a   Lumin Liao,a   Yanxun Guan,a   Jianhao Lao,a   Yukai Yang,a   Tianhao Zhou,a   Yu Wang,a   Bin Li,a   Kexiang Zhanga  and  Yongjin Zoua  

* Corresponding authors

a Guangxi Key Laboratory of Information Materials, Guangxi Collaborative Innovation Center for Structure and Properties for New Energy and Materials, School of Material Science and Engineering, Guilin University of Electronic Technology, Guilin 541004, P. R. China
E-mail: xufen@guet.edu.cn, sunlx@guet.edu.cn

Abstract

Herein, a highly active Z-scheme SnS/Zn2SnO4 photocatalyst is fabricated by a one-step hydrothermal route. The structure, composition, photoelectric and photocatalytic properties of the as-prepared photocatalysts are systematically researched. The results demonstrate that SZS-6 displays a good photocatalytic performance with an efficiency of 94.5% to degrade methylene blue (MB) under visible light irradiation (λ > 420 nm). And its degradation rate constant is up to 0.0331 min−1, which is 3.9 and 4.4 times faster than SnS and Zn2SnO4, respectively. The formation of a Z-scheme heterojunction facilitates the separation and transfer of charges, which improves the degradation of MB. The Z-scheme charge transfer pathway of the SnS/Zn2SnO4 photocatalyst is verified by the shifted peaks of the X-ray photoelectron spectroscopy (XPS) spectrum, the relative position of the bandgap, work function as well as free radical trapping experiments. The photocatalytic mechanism for the degradation of MB by SnS/Zn2SnO4 is proposed.

Graphical abstract: A highly active Z-scheme SnS/Zn2SnO4 photocatalyst fabricated for methylene blue degradation

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DOI
https://doi.org/10.1039/D2RA05519H
Article type
Paper
Submitted
02 Sep 2022
Accepted
19 Oct 2022
First published
08 Nov 2022
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2022,12, 31985-31995

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A highly active Z-scheme SnS/Zn2SnO4 photocatalyst fabricated for methylene blue degradation

Y. Wang, F. Xu, L. Sun, Y. Li, L. Liao, Y. Guan, J. Lao, Y. Yang, T. Zhou, Y. Wang, B. Li, K. Zhang and Y. Zou, RSC Adv., 2022, 12, 31985 DOI: 10.1039/D2RA05519H

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