Visible-light driven degradation of ibuprofen using abundant metal-loaded BiVO 4 photocatalysts
| Autor: | Jun-Xiao Zhang, Hui Wang, Aizhong Ding, Ya-Qi Zhu, Zhao-Yong Bian |
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| Rok vydání: | 2014 |
| Předmět: |
Environmental Engineering
Aqueous solution Materials science Diffuse reflectance infrared fourier transform Scanning electron microscope Health Toxicology and Mutagenesis Inorganic chemistry Public Health Environmental and Occupational Health General Medicine General Chemistry Pollution Catalysis chemistry.chemical_compound X-ray photoelectron spectroscopy chemistry Bismuth vanadate Photocatalysis Environmental Chemistry Nuclear chemistry BET theory |
| Zdroj: | Chemosphere. 117:527-531 |
| ISSN: | 0045-6535 |
| DOI: | 10.1016/j.chemosphere.2014.09.017 |
| Popis: | An efficient method for the degradation of ibuprofen as an aqueous contaminant was developed under visible-light irradiation with as-prepared bismuth vanadate (BiVO 4 ) catalysts. The metal-loaded catalysts Cu–BiVO 4 and Ag–BiVO 4 were synthesized using a hydrothermal process and then a wet-impregnation method. All of the materials were fully characterized by X-ray diffraction, scanning electron microscopy, UV–vis diffuse reflectance spectroscopy, X-ray photoelectron spectroscopy and BET surface area. The results indicated that all of the prepared samples had monoclinic scheelite structures. In the metal-loaded catalysts, silver existed as a mixture of Ag and Ag 2 O on the surface of the catalysts. However, copper existed as Cu 2 O and CuO. Additionally, the band gap values of BiVO 4 , Ag–BiVO 4 , and Cu–BiVO 4 were 2.38, 2.31, and 2.30 eV, respectively. Compared to the BiVO 4 catalyst, the metal-loaded BiVO 4 catalysts showed superior photocatalytic properties for the degradation of ibuprofen. |
| Databáze: | OpenAIRE |
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