Highly efficient photocatalytic H2 evolution using the Ni2P-Zn0.5Cd0.5S photocatalyst under visible light irradiation
| Autor: | Yanan Yang, Jianmin Dou, Zhuwang Shao, Yinna He, Bo Ge, Tiantian Zeng, Xipeng Pu |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
Mechanical Engineering Visible light irradiation Metals and Alloys Nanoparticle 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Hydrothermal circulation 0104 chemical sciences Chemical engineering Mechanics of Materials Materials Chemistry Photocatalysis Quantum efficiency 0210 nano-technology Porosity |
| Zdroj: | Journal of Alloys and Compounds. 769:889-897 |
| ISSN: | 0925-8388 |
| DOI: | 10.1016/j.jallcom.2018.08.064 |
| Popis: | The development of a highly-efficient co-catalyst using earth-abundant elements is important to improve photocatalytic H2 evolution. Herein, we prepared Ni2P-Zn0.5Cd0.5S (NPZCS) porous composites suitable for photocatalytic H2 evolution under visible light irradiation. The in-situ synthesis and loading of Ni2P nanoparticles onto the porous structure of ZCS was achieved in one-step by a hydrothermal method without the addition of any surfactants or templates. It was revealed that porous ZCS exhibited advanced photocatalytic performance. Furthermore, the optimized NPZCS showed remarkably enhanced photocatalytic activity for H2 evolution under visible light irradiation. An optimal H2 evolution rate of 912.57 μmol•h−1 was observed over NPZCS loaded with 0.125% Ni2P, with a calculated apparent quantum efficiency of 37.5% at 420 nm. Loading of the Ni2P co-catalyst provided active reaction sites, boosted the efficiency of photoinduced electron-hole pair separation and extended the lifetime of photoinduced charge, resulting in enhanced photocatalytic H2 evolution efficiency under visible light irradiation. |
| Databáze: | OpenAIRE |
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