Photocatalytic properties of boehmite–SnO2 composites for the degradation of phenol
| Autor: | Francisco Tzompantzi, Ricardo Gómez, R. Pérez-Hernández, Agileo Hernández-Gordillo, G. Mendoza-Damián |
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| Rok vydání: | 2016 |
| Předmět: |
Boehmite
Materials science Coprecipitation Composite number 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Catalysis 0104 chemical sciences chemistry.chemical_compound chemistry Photocatalysis Phenol Composite material 0210 nano-technology Photocatalytic degradation Photodegradation |
| Zdroj: | Catalysis Today. 266:82-89 |
| ISSN: | 0920-5861 |
| Popis: | Boehmite (AlOOH) and SnO2 composites with different Sn4+ contents were obtained by the coprecipitation method, drying the materials at a desired temperature ranging from 100 to 250 °C. The photocatalytic properties of the composites were tested in the degradation and mineralization of phenol. The boehmite-SnO2 composite with 10 mol% of Sn4+ featured an improved photocatalytic activity eliminating phenol under UV light irradiation, where the photodegradation rate was found to be 2.9 times more active than that of boehmite and bulk SnO2. The photocatalytic activity of the composites was influenced by the optical-electronic properties displayed by the small SnO2 particles. The drying temperature effect on the photocatalytic properties of the composites was also studied. The possible photocatalytic degradation mechanism was considered as a function of the interaction between boehmite and the small SnO2 particles. |
| Databáze: | OpenAIRE |
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