Bifunctional catalysts AC/Cu2O/CuO for removal of organic pollutant with enhanced visible light photocatalysis
A novel floating activated carbon/Cu2O/CuO(AC/Cu2O/CuO) heterojunction was synthesized by chemical method. It was used as new photocatalyst for adsorption simultaneous photocatalytic degradation of organic pollutants in water in visible light. The degradation rate of AC/Cu2O/CuO to the simulated pol...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2021-12-01
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| Series: | Chemical Physics Impact |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S266702242100030X |
| _version_ | 1818873889502003200 |
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| author | Jun Zhao Sijie Yuan Hui Wang Qingjie Guo Hongjing Tian |
| author_facet | Jun Zhao Sijie Yuan Hui Wang Qingjie Guo Hongjing Tian |
| author_sort | Jun Zhao |
| collection | DOAJ |
| description | A novel floating activated carbon/Cu2O/CuO(AC/Cu2O/CuO) heterojunction was synthesized by chemical method. It was used as new photocatalyst for adsorption simultaneous photocatalytic degradation of organic pollutants in water in visible light. The degradation rate of AC/Cu2O/CuO to the simulated pollutant methyl orange reaches 96.73%. And absorption wavelength of AC/Cu2O/Cu to sunlight extended from 662 nm to 765 nm. The relative molar ratio of Cu2+ to Cu+ affects its photocatalytic activity. When the relative molar ratio of Cu+ to Cu2+ is 1:1, the heterojunction impedance is reduced by 64% and gap width reduced by 0.31 eV. AC/Cu2O/CuO heterojunction improved the dissociation of photo-generated electron-hole pair. Activated carbon has PI bonds that provide fast electron and medium transfer channel. Characterization analysis show AC/Cu2O/CuO heterojunction reduced photocorrosion of Cu2O and the resistance of the carrier transportation improving visible light utilization. |
| first_indexed | 2024-12-19T13:01:53Z |
| format | Article |
| id | doaj.art-937943529fb14073b5a28340ec765d02 |
| institution | Directory Open Access Journal |
| issn | 2667-0224 |
| language | English |
| last_indexed | 2024-12-19T13:01:53Z |
| publishDate | 2021-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Chemical Physics Impact |
| spelling | doaj.art-937943529fb14073b5a28340ec765d022022-12-21T20:20:14ZengElsevierChemical Physics Impact2667-02242021-12-013100041Bifunctional catalysts AC/Cu2O/CuO for removal of organic pollutant with enhanced visible light photocatalysisJun Zhao0Sijie Yuan1Hui Wang2Qingjie Guo3Hongjing Tian4Corresponding author.; Institution of Chemical Engineers, State Key Laboratory Base of Eco-chemical Engineering, Qingdao University of Science &Technology, Zhengzhou Road No.53, Qingdao 266042, ChinaInstitution of Chemical Engineers, State Key Laboratory Base of Eco-chemical Engineering, Qingdao University of Science &Technology, Zhengzhou Road No.53, Qingdao 266042, ChinaInstitution of Chemical Engineers, State Key Laboratory Base of Eco-chemical Engineering, Qingdao University of Science &Technology, Zhengzhou Road No.53, Qingdao 266042, ChinaInstitution of Chemical Engineers, State Key Laboratory Base of Eco-chemical Engineering, Qingdao University of Science &Technology, Zhengzhou Road No.53, Qingdao 266042, ChinaInstitution of Chemical Engineers, State Key Laboratory Base of Eco-chemical Engineering, Qingdao University of Science &Technology, Zhengzhou Road No.53, Qingdao 266042, ChinaA novel floating activated carbon/Cu2O/CuO(AC/Cu2O/CuO) heterojunction was synthesized by chemical method. It was used as new photocatalyst for adsorption simultaneous photocatalytic degradation of organic pollutants in water in visible light. The degradation rate of AC/Cu2O/CuO to the simulated pollutant methyl orange reaches 96.73%. And absorption wavelength of AC/Cu2O/Cu to sunlight extended from 662 nm to 765 nm. The relative molar ratio of Cu2+ to Cu+ affects its photocatalytic activity. When the relative molar ratio of Cu+ to Cu2+ is 1:1, the heterojunction impedance is reduced by 64% and gap width reduced by 0.31 eV. AC/Cu2O/CuO heterojunction improved the dissociation of photo-generated electron-hole pair. Activated carbon has PI bonds that provide fast electron and medium transfer channel. Characterization analysis show AC/Cu2O/CuO heterojunction reduced photocorrosion of Cu2O and the resistance of the carrier transportation improving visible light utilization.http://www.sciencedirect.com/science/article/pii/S266702242100030XCu2OPhotocorrosionCocatalystsDegradation |
| spellingShingle | Jun Zhao Sijie Yuan Hui Wang Qingjie Guo Hongjing Tian Bifunctional catalysts AC/Cu2O/CuO for removal of organic pollutant with enhanced visible light photocatalysis Chemical Physics Impact Cu2O Photocorrosion Cocatalysts Degradation |
| title | Bifunctional catalysts AC/Cu2O/CuO for removal of organic pollutant with enhanced visible light photocatalysis |
| title_full | Bifunctional catalysts AC/Cu2O/CuO for removal of organic pollutant with enhanced visible light photocatalysis |
| title_fullStr | Bifunctional catalysts AC/Cu2O/CuO for removal of organic pollutant with enhanced visible light photocatalysis |
| title_full_unstemmed | Bifunctional catalysts AC/Cu2O/CuO for removal of organic pollutant with enhanced visible light photocatalysis |
| title_short | Bifunctional catalysts AC/Cu2O/CuO for removal of organic pollutant with enhanced visible light photocatalysis |
| title_sort | bifunctional catalysts ac cu2o cuo for removal of organic pollutant with enhanced visible light photocatalysis |
| topic | Cu2O Photocorrosion Cocatalysts Degradation |
| url | http://www.sciencedirect.com/science/article/pii/S266702242100030X |
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