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- Title
Efficient Removal of Tetracycline by Metal–Organic Framework ZIF-67 and Its Mechanism.
- Authors
Zheng, Shengyang; Xu, Yaping; Yao, Xu; Wang, Chenzhe; Liu, Ping; Zhao, Haitao; Lu, Jianbing; Ju, Jing
- Abstract
The widespread use of tetracycline (TC) poses potential hazards to ecosystems and human health. In this study, ZIF-67 was successfully synthesized using a room-temperature static synthesis method and applied to the efficient removal of TC from water. It was shown that the maximum adsorption of TC by ZIF-67 could reach 1583.128 mg·g−1 at pH = 5.0, an initial TC concentration of 450 mg·g−1, an adsorption time of 720 min, and a temperature of 308K.The pseudo-second-order kinetic model and Langmuir's isothermal adsorption model could describe the adsorption process better, which proved that the adsorption of ZIF-67 on TC was mainly monolayer adsorption dominated by chemisorption. Mechanistic studies showed that the adsorption process of ZIF-67 on TC was mainly through electrostatic interactions, pore adsorption, π–π interactions, and framework coordination of ZIF-67 surface cations with TC.
- Subjects
METAL-organic frameworks; TETRACYCLINE; TETRACYCLINES; ELECTROSTATIC interaction; CHEMISORPTION
- Publication
Separations (2297-8739), 2024, Vol 11, Issue 2, p63
- ISSN
2297-8739
- Publication type
Article
- DOI
10.3390/separations11020063