Synthesis and photocatalytic performance of MoS2/Polycrystalline black phosphorus heterojunction composite
| Autor: | Lifeng Dong, Wenbo He, Yan Huang, Bingnan Wang, Lina Sui, Beili Pang, Honggang Lu, Liyan Yu, Shuai Ma, Hongzhou Dong, Zhixing Gan |
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| Rok vydání: | 2021 |
| Předmět: |
Electron mobility
Materials science Renewable Energy Sustainability and the Environment Band gap Composite number Energy Engineering and Power Technology Heterojunction 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Black phosphorus 0104 chemical sciences Catalysis Fuel Technology Chemical engineering Photocatalysis Crystallite 0210 nano-technology |
| Zdroj: | International Journal of Hydrogen Energy. 46:3530-3538 |
| ISSN: | 0360-3199 |
| DOI: | 10.1016/j.ijhydene.2020.10.176 |
| Popis: | 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 μmol 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. |
| Databáze: | OpenAIRE |
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