Journal
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume 46, Issue 5, Pages 3530-3538Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2020.10.176
Keywords
Black phosphorus; Molybdenum disulfide; Heterojunction; Solar hydrogen generation
Categories
Funding
- National Natural Science Foundation of China [21776147, 21606140, 61604086, 21905153]
- Qingdao Municipal Science and Technology Bureau, China [19-6-1-91-nsh]
- International Science & Technology Cooperation Program of China [2014DFA60150]
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Black phosphorus as a promising catalyst for solar hydrogen production has attracted attention, and the addition of MoS2 as a cocatalyst can significantly improve its photocatalytic performance; The 10/0.5 ratio of BP/MoS2 catalyst shows the highest photocatalytic hydrogen evolution performance.
As a promising catalyst for solar hydrogen production, black phosphorus (BP) has received widespread attention due to variable band gaps, high carrier mobility, and strong light absorption performance. Herein, we use MoS2 as a cocatalyst to synthesize BP/MoS2 catalyst with polycrystalline BP to improve photocatalytic performance under visible light irradiation. A small amount of MoS2 can reduce the recombination of electron-hole pairs in the composite, increase carrier transport efficiency, and then improve photocatalytic performance. As expected, the 10/0.5 ratio of BP/MoS2 catalyst exhibits the highest photocatalytic hydrogen evolution performance with a hydrogen evolution rate of 575.4 mu mol h(-1) g(-1), which is 2.5 times of pure BP. Based on the results above, a simple method is provided to synthesize low-cost black phosphorus-based photocatalysts. (C) 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
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