| Autor: |
Jun Zhao, Sijie Yuan, Hui Wang, Qingjie Guo, Hongjing Tian |
| Jazyk: |
angličtina |
| Rok vydání: |
2021 |
| Předmět: |
|
| Zdroj: |
Chemical Physics Impact, Vol 3, Iss , Pp 100041- (2021) |
| Druh dokumentu: |
article |
| ISSN: |
2667-0224 |
| DOI: |
10.1016/j.chphi.2021.100041 |
| Popis: |
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. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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