期刊
RENEWABLE ENERGY
卷 182, 期 -, 页码 958-968出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.renene.2021.11.030
关键词
Bi3TaO7; g-C3N4; Visible light; Hydrogen; Photocatalysis; S-scheme
资金
- National Natural Science Foundation of China [21906072, 22006057, 31971616]
- Natural Science Foundation of Jiangsu Province [BK20190982]
- Doctoral Scientific Research Foundation of Jiangsu University of Science and Technology (China) [1062931806, 1142931803]
- Science and Technology Research Project of the Department of Education of Jilin Province [JJKH20200039KJ]
- Science and Technology Research Project of Jilin City [20190104120, 201830811]
- Science and Technology Development Project of Jilin Province [20190201277JC, 20200301046RQ, YDZJ202101ZYTS070]
- Doctor of Mass Entrepreneurship and Innovation Project in Jiangsu Province
- Henan Postdoctoral Foundation [202003013]
A 0D/3D S-scheme heterojunction catalyst was constructed to simulate photocatalytic hydrogen production under sunlight irradiation. The heterojunction catalyst showed higher photocatalytic activity, with the optimal loading amount achieving the highest H-2 evolution rate.
Photocatalytic H-2 evolution is a clean and renewable process that converts solar energy into chemical energy through water splitting under solar light irradiation. Herein, zero-dimensional (0D) Bi3TaO7 (BTO) quantum dots/three-dimensional (3D) onion-ring-like g-C3N4 (OR-CN) S-scheme heterojunction catalyst is constructed to simulate the production of hydrogen by photocatalysis under sunlight irradiation through a solvothermal method for photocatalytic hydrogen production under visible light irradiation. Results reveal that BTO/OR-CN heterojunction exhibited much higher photocatalytic activity compared to the pure BTO and OR-CN, in which the optimal loading amount 0.3% BTO/OR-CN composite endows the optimal photocatalytic H-2 evolution rate of 4891 mmol g(-1) with the apparent quantum yield (AQY) at 420 nm of 4.1%. The enhancement of excellent photocatalytic H-2 performance is due to the formation of S-scheme heterojunction structure between 0D BTO quantum dots and 3D OR-CN, which promotes the separation and migration of photogenerated carriers and significantly enhances the visible-light absorption capacity. This work offers a viable strategy to construct 0D/3D S-scheme heterojunction photocatalyst in the application of photocatalytic field under visible light. (C) 2021 Elsevier Ltd. All rights reserved.
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