期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 46, 期 64, 页码 32413-32424出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2021.07.090
关键词
S-scheme heterojunction; MOF-Derived TiO2; Porous g-C3N4; Photocatalytic water splitting; Wastewater purification
资金
- NSFC [22076039, 51808199]
- Plan for University Scientific Innovative people of Henan Province, PR China [19HASTIT046]
- China Postdoctoral Science Foundation [2018M630825, 2019T120624]
This work fabricated photocatalysts with a novel S-scheme heterojunction, which showed superior hydrogen evolution efficiency and organic contaminant removal capability, providing a feasible method for designing bifunctional photocatalysts with energy-saving and environmental restoration functions.
In this work, photocatalysts with a novel S-scheme heterojunction were fabricated by coupling MOF-derived TiO2 with porous g-C3N4 (MTO/PCN). The S-scheme heterojunction with matching band gap possesses different advantageous properties, which can not only inhibit photo-generated charge recombination, but also reserve outstanding redox ability. As expected, superior hydrogen evolution efficiency of 40-MTO/PCN was obtained in a TEOA-containing aqueous solution and pure water, which were 5252.9 and 974.6 mmol h(-1) g(-1), respectively. Meanwhile, the hybrid can also serve as a bifunctional catalyst for H-2 generation (2137.3 mmol h(-1) g(-1)) and organic contaminant removal (the RhB purification efficiency: 35.24%). This work furnishes a feasible method for devising bifunctional photocatalysts that can simultaneously produce hydrogen and purify wastewater to provide both energy-saving and environmental restoration functions. (C) 2021 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
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