吸附
镉
纳米孔
金属有机骨架
水溶液中的金属离子
朗缪尔吸附模型
环糊精
化学
离子交换
傅里叶变换红外光谱
水处理
金属
无机化学
化学工程
离子
色谱法
有机化学
环境工程
环境科学
工程类
作者
Chang Liu,Peng Wang,Xueke Liu,Xiaotong Yi,Donghui Liu,Zhiqiang Zhou
标识
DOI:10.1002/asia.201801431
摘要
Abstract Water contaminated with heavy metals has been identified as a significant threat to human health. Therefore, the development of safe and rapid water‐treatment techniques is necessary. We have synthesized an eco‐friendly γ‐cyclodextrin metal–organic framework (MOF)‐based nanoporous carbon (γ‐CD MOF‐NPC) material, conducted a comprehensive characterization of it, and found its rapid and effective Cd II ‐removal capacity. The γ‐CD MOF‐NPC could effectively sequester a majority of cadmium ions within one minute, and it still demonstrated excellent adsorption ability under various conditions, including different pH, adsorbent dosage, and coexistent ions. The maximum adsorption capacity was calculated to be 140.85 mg g −1 by means of the Langmuir model. The adsorption was primarily due to the effect of ion exchange of oxygen‐containing functional groups, as determined by studying the ζ potential and Fourier transform infrared spectroscopy. Flow‐through experiments further proved the rapid Cd II ‐removal capacity and potential of the practical application of γ‐CD MOF‐NPC in water treatment according to the cytotoxic data.
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