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Photocatalytic Degradation of Tetracycline under Visible Light Irradiation on BiVO4 Microballs Modified with Noble Metals
| Title: | Photocatalytic Degradation of Tetracycline under Visible Light Irradiation on BiVO4 Microballs Modified with Noble Metals |
| Authors: | Wu, Limeng Browse this author | | Yue, Xin Browse this author | | Chang, Ying Browse this author | | Wang, Kunlei Browse this author | | Zhang, Jinyue Browse this author | | Sun, Jiajie Browse this author | | Wei, Zhishun Browse this author | | Kowalska, Ewa Browse this author →ORCID |
| Keywords: | photocatalysis | | BiVO4 | | degradation of pollutants | | noble metals | | photocurrent | | surface modification |
| Issue Date: | Nov-2022 |
| Publisher: | MDPI |
| Journal Title: | Catalysts |
| Volume: | 12 |
| Issue: | 11 |
| Start Page: | 1293 |
| Publisher DOI: | 10.3390/catal12111293 |
| Abstract: | Monoclinic scheelite bismuth vanadate (BVO) microballs were prepared by a facile hydrothermal method and subsequently modified with 2 wt% of noble metals (NM = Au, Ag, Cu, Pt and Pd) by a photodeposition route. All materials were characterized by diffuse reflectance spectroscopy (DRS), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and Fourier-transform infrared spectroscopy (FTIR). The photocatalytic performance was investigated by degradation of tetracycline antibiotic under visible light irradiation. Moreover, photocurrent generation under UV/vis was also examined. It was found that BVO modification with all tested NMs resulted in a significant improvement in photocatalytic performance. The highest activity was obtained for Cu/BVO with mainly oxidized forms of copper. Based on scavenger tests (center dot O-2(-) and center dot OH as the main responsible species for TC degradation) and redox properties, it was proposed that the Z-scheme mechanism between copper oxides and BVO was responsible for enhanced photocatalytic activity. However, the co-participation of zero-valent forms of NMs should also be considered, either as electron scavengers, plasmonic sensitizers or conductors. Presented data reveal that porous microballs, highly attractive for practical applications due to micro-sized diameter and efficient light harvesting inside the structure, could be efficiently used for environmental and energy purposes under solar radiation. |
| Type: | article |
| URI: | http://hdl.handle.net/2115/87481 |
| Appears in Collections: | 触媒科学研究所 (Institute for Catalysis) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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