Insights into the Mechanism of the Bi/BiVO<sub>4</sub> Composites for Improved Photocatalytic Activity
The increasing concentration of residual ciprofloxacin (CIP) can cause potential harm to the environment. Photocatalysis has been regarded as an effective method for the degradation of CIP. Bi/BiVO<sub>4</sub> with excellent photocatalytic performance was synthesized partial reduction wi...
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MDPI AG
2021-04-01
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| Series: | Catalysts |
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| Online Access: | https://www.mdpi.com/2073-4344/11/4/489 |
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| author | Hongchen Song Jing Sun Tingting Shen Lang Deng Xikui Wang |
| author_facet | Hongchen Song Jing Sun Tingting Shen Lang Deng Xikui Wang |
| author_sort | Hongchen Song |
| collection | DOAJ |
| description | The increasing concentration of residual ciprofloxacin (CIP) can cause potential harm to the environment. Photocatalysis has been regarded as an effective method for the degradation of CIP. Bi/BiVO<sub>4</sub> with excellent photocatalytic performance was synthesized partial reduction with NaBH<sub>4</sub>. The structure, morphology, composition, and optical performance of BiVO<sub>4</sub> and Bi/BiVO<sub>4</sub> were characterized by a variety of techniques. The results showed that the Bi/BiVO<sub>4</sub> exhibits high photocatalytic activity in the degradation of CIP. Comparison of BiVO<sub>4</sub> and Bi/BiVO<sub>4</sub> has lower photoluminescence intensity and higher photocurrent responses intensity. The introduction of Bi made Bi/BiVO<sub>4</sub> have a higher charge separation efficiency and generate more active free radicals. In addition, the radical trapping experiments revealed that superoxide free radicals and holes were the main active free radicals during the degradation of CIP. The pathway of CIP degradation was investigated through high performance liquid chromatography-mass spectrometry, and a possible degradation mechanism was proposed. |
| first_indexed | 2024-03-10T12:24:27Z |
| format | Article |
| id | doaj.art-cc64cbae3070404db55e20bef877fca2 |
| institution | Directory Open Access Journal |
| issn | 2073-4344 |
| language | English |
| last_indexed | 2024-03-10T12:24:27Z |
| publishDate | 2021-04-01 |
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| spelling | doaj.art-cc64cbae3070404db55e20bef877fca22023-11-21T15:12:28ZengMDPI AGCatalysts2073-43442021-04-0111448910.3390/catal11040489Insights into the Mechanism of the Bi/BiVO<sub>4</sub> Composites for Improved Photocatalytic ActivityHongchen Song0Jing Sun1Tingting Shen2Lang Deng3Xikui Wang4School of Environmental Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, ChinaSchool of Environmental Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, ChinaSchool of Environmental Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, ChinaSchool of Environmental Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, ChinaCollege of Environmental Science and Engineering, Shandong Agriculture and Engineering University, Jinan 251100, ChinaThe increasing concentration of residual ciprofloxacin (CIP) can cause potential harm to the environment. Photocatalysis has been regarded as an effective method for the degradation of CIP. Bi/BiVO<sub>4</sub> with excellent photocatalytic performance was synthesized partial reduction with NaBH<sub>4</sub>. The structure, morphology, composition, and optical performance of BiVO<sub>4</sub> and Bi/BiVO<sub>4</sub> were characterized by a variety of techniques. The results showed that the Bi/BiVO<sub>4</sub> exhibits high photocatalytic activity in the degradation of CIP. Comparison of BiVO<sub>4</sub> and Bi/BiVO<sub>4</sub> has lower photoluminescence intensity and higher photocurrent responses intensity. The introduction of Bi made Bi/BiVO<sub>4</sub> have a higher charge separation efficiency and generate more active free radicals. In addition, the radical trapping experiments revealed that superoxide free radicals and holes were the main active free radicals during the degradation of CIP. The pathway of CIP degradation was investigated through high performance liquid chromatography-mass spectrometry, and a possible degradation mechanism was proposed.https://www.mdpi.com/2073-4344/11/4/489BiVO<sub>4</sub>bismuthphotocatalysisCIP |
| spellingShingle | Hongchen Song Jing Sun Tingting Shen Lang Deng Xikui Wang Insights into the Mechanism of the Bi/BiVO<sub>4</sub> Composites for Improved Photocatalytic Activity Catalysts BiVO<sub>4</sub> bismuth photocatalysis CIP |
| title | Insights into the Mechanism of the Bi/BiVO<sub>4</sub> Composites for Improved Photocatalytic Activity |
| title_full | Insights into the Mechanism of the Bi/BiVO<sub>4</sub> Composites for Improved Photocatalytic Activity |
| title_fullStr | Insights into the Mechanism of the Bi/BiVO<sub>4</sub> Composites for Improved Photocatalytic Activity |
| title_full_unstemmed | Insights into the Mechanism of the Bi/BiVO<sub>4</sub> Composites for Improved Photocatalytic Activity |
| title_short | Insights into the Mechanism of the Bi/BiVO<sub>4</sub> Composites for Improved Photocatalytic Activity |
| title_sort | insights into the mechanism of the bi bivo sub 4 sub composites for improved photocatalytic activity |
| topic | BiVO<sub>4</sub> bismuth photocatalysis CIP |
| url | https://www.mdpi.com/2073-4344/11/4/489 |
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