吸附
纳米复合材料
化学工程
化学
螯合作用
氢键
离子键合
离子强度
可重用性
材料科学
纳米技术
有机化学
分子
离子
计算机科学
工程类
软件
程序设计语言
水溶液
作者
Shurui Cao,Tiantian Tang,Cunxian Xi,Zhiqiong Chen
标识
DOI:10.1016/j.cej.2021.130096
摘要
The capture and separation properties of the three-dimensional Fe3O4/GO/ZIF-8 towards amphetamine were investigated. The combination of Fe3O4/GO and ZIF-8 has been designed through a facile self-assembly process, to exhibit the advantages of both and play the synergistic effect. Such nanocomposite was assessed as amphetamine adsorbent via batch experiments to determine the adsorption capacity, reusability and stability. Experimental characterizations consisting of adsorption isotherms, kinetics, thermodynamics, pH effect and ionic effect, in combination with theoretical calculations demonstrated the critical contribution of the hydrogen bonding interaction (O…H−N), π-π interaction and Zn−N chelation interaction during amphetamine adsorption process. Under the condition of introducing the Fe3O4, GO and ZIF-8 effectively realized the mutual promotion effect, among which GO increased the specific surface area and good dispersibility of Fe3O4/ZIF-8, and ZIF-8 obviously enhanced the stability of Fe3O4/GO. This work provided more options for the synthesis of high efficiency and functional adsorbents for psychoactive substances.
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