Preparation and photocatalytic properties of biomorphic hierarchical WO3 based on bionic rice hull
| Autor: | Zhu Yang, Li Ang, Yingji Song, Yingzi Lin, Tianmo Wu |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Diffuse reflectance infrared fourier transform 010405 organic chemistry Composite number chemistry.chemical_element General Chemistry 010402 general chemistry 01 natural sciences 0104 chemical sciences Nanomaterials chemistry.chemical_compound chemistry Chemical engineering Specific surface area Photocatalysis Degradation (geology) Carbon Methylene blue |
| Zdroj: | Research on Chemical Intermediates. 46:1405-1424 |
| ISSN: | 1568-5675 0922-6168 |
| DOI: | 10.1007/s11164-019-04041-6 |
| Popis: | In this study, biomorphic WO3-Cx nanomaterial was successfully prepared with rice hull as biological templates. The structure and morphology of the nanomaterial showed that WO3-Cx efficiently copied the original pore-shaped appearance of the rice hull with a specific surface area of 199.18 m2/g. Results of UV–Vis diffuse reflectance spectroscopy and photoluminescence spectroscopy showed that the carbon element of the rice hull biological template promoted the light response range of WO3-Cx, inhibiting the hole–electron composite. The effects of biomorphic WO3-Cx and commercially available WO3 combined with sunlight on the photocatalytic degradation of methylene blue (MB) were studied. Results showed that the degradation rate of biomorphic WO3-Cx to MB solution was higher than that of commercially available WO3 for 44%. WO3-Cx with a concentration of 0.05 mol/L and dose of 0.5 g/L had remarkable degradation activity to MB (10 mg/L). In addition, the quasi-first-order kinetic model could well fit the degradation process with a dynamic constant of 0.0246 min−1. |
| Databáze: | OpenAIRE |
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