期刊
APPLIED CATALYSIS B-ENVIRONMENTAL
卷 310, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.apcatb.2022.121344
关键词
Electrodeposition; Photo-electrocatalysis; Metal organic frameworks; Ti3+ self-doped; TiO2 nanotubes
资金
- National Natural Science Foundation of China [51878258]
- National Youth Foundation of China [52000064]
- Changsha Municipal Natural Science Foundation [kq2014054]
- Special Funds for the Construction ofInnovative Provinces in Hunan [2021SK2040]
- Science and Technology Innovation Program of Hunan Province [2021RC3133]
This study successfully prepared Ar-Fe2O3/Ti3+-TiO2-NTs photoelectrodes through multiple processes and achieved efficient degradation of antibiotics. The photoelectrodes exhibited excellent performance in various applications.
The low interfacial mass transfer efficiency between metal-organic framework (MOFs) and conductive substrates makes the development of MOFs-based photoelectrodes challenging. Herein, Ar-Fe2O3/Ti3+-TiO2-NTs photo electrodes are obtained through electrochemical reduction, pulsed deposition, MOFs self-assembly, and sculptural reduction processes. The target photoelectrodes achieve 100% degradation of tetracycline (TC) within 90 min, and the photo-electrocatalytic synergy factor is estimated to be 4.20. Ar-Fe2O3/Ti3+-TiO2-NTs photo electrodes also exhibit excellently in multiple antibiotics and real samples. The reduction self-doping of Ti3+ retains vertical orientation properties of nanotubes to provide a path for electronics, and heightens the light harvesting capacity. The pulse deposition improves the dispersibility of Fe, which is beneficial to the self assembly of MIL-100(Fe). After sculpture-reduction processes, Ar-Fe2O3 retains the porous structure of MIL100(Fe), and the heterojunction formed with Ti3+-TiO2-NTs can significantly enhance the interface charge transfer. This work enriches the electrochemical modification strategy of TiO2-NTs, and gives new insights into the development of MOFs-based photoelectrodes.
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