膜
吸附
材料科学
化学工程
冠醚
选择性吸附
朗缪尔
氟化物
相位反转
弗伦德利希方程
选择性
离子
色谱法
高分子化学
无机化学
化学
有机化学
催化作用
工程类
生物化学
作者
Dongshu Sun,Yanzhuo Zhu,Minjia Meng,Yu Qiao,Yongsheng Yan,Chunxiang Li
标识
DOI:10.1016/j.seppur.2016.11.029
摘要
A macroporous polymer- ion imprinted macroporous membranes (IIMMs) was synthesized using Poly(vinylidene fluoride) (PVDF) as membrane matrix and crown ether (CE) as function monomer by using phase inversion technique. In addition, dopamine (DA) was introduced between PVDF membrane matrix and imprinted layer to ensure combinative in a stable fashion. Attributing to the unique properties of CE can react with alkali metal ions to form a stable complex, promoting the growth of large and homogeneous specific recognition cavity on the surface of IIMMs, hence the IIMMs exhibited highly effective in separation performance of template ion (Li+). Classical adsorption isotherms including Langmuir and Freundlich and kinetic toward Li+of IIMMs and NIMMs were employed to describe the adsorption equilibria. The excellent separation (maximum selectivity factor α is 4.42) and recognition behavior coupling with the low preparation consumed and green, quick, facile synthesis conditions make the as-prepared IIMMs attractive in broad technological applications of recognition and separation of Li+in salt lake.
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