1
Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China
2
Shenhua (Beijing) New Materials Technology CO.LTD, CHN Energy Group, Beijing 102211, China
3
Center for Advanced Low-dimension Materials, Donghua University, Shanghai 201620, China
4
Shanghai Institute of Pollution Control and Ecological Security, 1239 Siping Road, Shanghai 200092, China
*
Authors to whom correspondence should be addressed.
Received: 13 Dec 2022
Accepted: 01 Mar 2023
Published: 03 Mar 2023
Abstract
SnS
2/MoS
2 heterojunction nanocomposite was prepared by a one-step hydrothermal
synthesis method. The nanocomposite exhibited much improved photocatalytic
hydrogen evolution performance in CO
2 saturated solution compared
with pure MoS
2 and SnS
2 samples. The improved
photocatalytic activity was attributed to the S-scheme heterojunction structure
between SnS
2 quantum dots and MoS
2 nanosheets which
facilitate electron-hole separation both in MoS
2 and SnS
2.
In the S-scheme structure, the strong reduction ability of SnS
2 quantum dots was
well maintained for the improved H
2 evolution. In situ DRIFT studies
allowed us to suggest reaction pathways from CO
2 and H
2O
to photocatalytic H
2, CO, and CH
4 generation.
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© 2023 by the authors; licensee SCIEPublish, SCISCAN co. Ltd. This article is an open access article distributed under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
