Bimetallic zeolite-imidazole framework-based heterostructure with enhanced photocatalytic hydrogen production activity
| Autor: | Nayab Arif, Yi-Chuan Dou, Kai Wang, Ye-Zhan Lin, Kui Li, Yu Zhang, Shiquan Liu, Futian Liu |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
Band gap General Chemical Engineering Heterojunction 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Catalysis Chemical engineering Photocatalysis Charge carrier 0210 nano-technology Zeolite Bimetallic strip Hydrogen production |
| Zdroj: | RSC advances. 11(16) |
| ISSN: | 2046-2069 |
| Popis: | Bimetallic zeolite-imidazole frameworks with controllable flat band position, band gap and hydrogen evolution reaction characteristics were adopted as a photocatalytic hydrogen production catalyst. Furthermore, the g-C3N4–MoS2 2D–2D surface heterostructure was introduced to the ZnM-ZIF to facilitate the separation as well as utilization efficiency of the photo-exited charge carriers in the ZnM-ZIFs. On the other hand, the ZnM-ZIFs not only inhibited the aggregation of the g-C3N4–MoS2 heterostructure, but also improved the separation and transport efficiency of charge carriers in g-C3N4–MoS2. Consequently, the optimal g-C3N4–MoS2–ZnNi-ZIF exhibited an extraordinary photocatalytic hydrogen evolution activity 214.4, 37.5, and 3.7 times larger than that of the pristine g-C3N4, g-C3N4–ZnNi-ZIF and g-C3N4–MoS2, respectively, and exhibited a H2-evolution performance of 77.8 μmol h−1 g−1 under UV-Vis light irradiation coupled with oxidation of H2O into H2O2. This work will furnish a new MOF candidate for photocatalysis and provide insight into better utilization of porous MOF-based heterostructures for hydrogen production from pure water. |
| Databáze: | OpenAIRE |
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