MOF-derived Co/ZnO@silicalite-1 photocatalyst with high photocatalytic activity
| Autor: | Ming Fang, Xuetao Luo, Xiaobing Yang, Jiapeng Hu, Juan Chen, Huixian Lai |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Aqueous solution
Materials science Band gap General Chemical Engineering Doping 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Photochemistry 01 natural sciences 0104 chemical sciences law.invention Catalysis chemistry.chemical_compound chemistry Chemical engineering law Rhodamine B Photocatalysis Calcination Metal-organic framework 0210 nano-technology |
| Zdroj: | RSC Advances. 7:38519-38525 |
| ISSN: | 2046-2069 |
| DOI: | 10.1039/c7ra05863b |
| Popis: | Metal doped ZnO supported on porous materials have unique and highly attractive properties and have drawn worldwide attention. Herein, we explored the synthesis of Co/ZIF-8@silicalite-1 catalysts containing different amounts of Co by using metal organic frameworks as precursors and silicalite-1 as support. Then Co/ZIF-8@silicalite-1 catalysts were calcined at 550 °C to prepare the Co/ZnO@silicalite-1 photocatalysts. All samples were characterized by XRD, SEM, FT-IR and UV-vis diffuse reflectance spectra. The results show that the doping Co can increase the particle size of Co/ZIF-8 and decrease the content of Zn in Co/ZIF-8@silicalite-1. When ZnO@silicalite-1 is doped with Co from 0% to 20%, its band gap absorption is extended from 380 to 480 nm and a new band gap absorption at about 720 nm appears. The photocatalystic properties were investigated by degradation of rhodamine B (RhB) aqueous solution under UV light. In the series of Co/ZnO@silicalite-1 photocatalysts, 5Co/ZnO@silicalite-1 shows the highest photocatalytic efficiency. |
| Databáze: | OpenAIRE |
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