期刊
CHEMICAL ENGINEERING JOURNAL
卷 412, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2020.127979
关键词
Photocatalysis; Density functional theory; Mesoporous graphitic carbon nitride; Peroxydisulfate; Atenolol
资金
- National Key R&D Program of China [2019YFC0408500]
- Major Science and Technology Projects of Anhui Province [201903a07020009]
- Changfeng County-Hefei University of Technology Industrial Innovation Guidance Fund Key Project
- Suzhou Science and Technology Plan Project [2019056]
A metal-free mesoporous graphitic carbon nitride (mpg-CN) was used to degrade the cardiovascular drug atenolol (ATN). Introduction of peroxydisulfate (PDS) enhanced catalytic performance, with active species identified as photo-induced holes, SO4?- and O2?-. The interactions among PDS, catalyst, and ATN were unveiled through density functional theory (DFT) calculations and photoelectrochemical experiments.
The visible light sensitive metal-free mesoporous graphitic carbon nitride (mpg-CN) was fabricated for photodegradation of atenolol (ATN), a widely used drug for cardiovascular diseases. Peroxydisulfate (PDS) as an electron acceptor as well as a radical origin was introduced to enhance the catalytic performance, and retaining the nature of metal-free and mesoporous of mpg-CN. The photo-induced holes, SO4?- and O2?- were identified as the active species. Integrated with density functional theory (DFT) calculations and photoelectrochemical experiments, the interaction among PDS, catalyst, and ATN is unveiled. PDS can obtain an electron from the catalyst, hence to improve the separation of electron-hole pairs and activates itself. ATN has stable chemical adsorption states on catalyst surface. Then the electron-deficient catalysts can acquire electrons from ATN. In addition, primary degradation sites of ATN and following possible degradation pathways were explored with DFT calculations and mass spectrometry analysis.
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