3 years ago

A metal-organic framework with large 1-D channels and rich OH sites for high-efficiency chloramphenicol removal from water

A metal-organic framework with large 1-D channels and rich OH sites for high-efficiency chloramphenicol removal from water
Hongliang Huang, Yanan Wei, Yuezhong Zhang, Huifang Zhao, Lifei Zhi, Yuanyang Wang, Wenjing Dai, Zhuqing Gao, Xudong Zhao
High-efficiency removal of chloramphenicol (CAP) drug from waste water still faces a large challenge up to date. Herein, we report the first metal-organic framework-based adsorbent (PCN-222) for CAP and effective removal was achieved. PCN-222 exhibits a large adsorption capacity of 370 mg g−1, superior to some other MOFs and various reported adsorbents; and more importantly, the adsorption equilibrium can be quickly obtained at only 58 s. Besides, ∼99.0% of CAP can be removed from water in the low concentrations (including the concentrations found in real water). Further investigation indicates that H-bond interaction, electrostatic interaction and the special pore structure of PCN-222 all play important effects on the high-efficiency removal of CAP. Therefore, our work may provide a novel perspective for removing CAP or other antibiotic drugs from contaminated water.
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