膜
选择性
共价键
分子印迹
吸附
化学
选择性吸附
纳米复合材料
分子印迹聚合物
化学工程
共价有机骨架
金属有机骨架
气体分离
溶胶凝胶
纳米技术
色谱法
组合化学
有机化学
材料科学
催化作用
生物化学
工程类
作者
Faguang Ma,Ming Yan,Rongxin Lin,Yilin Wu,Jianming Pan
标识
DOI:10.1016/j.seppur.2023.125458
摘要
Compared to traditional separation methods, membrane-based separation can reduce environmental impact while reducing energy consumption. However, traditional adsorbents have issues with low selectivity and adsorption capacity because they enclose the majority of their functional sites in their thick structures. In this research, molecularly imprinted nanocomposite membranes were inventively integrated with boronate-affinity sol–gel imprinting technique (BSIT). It is important to note that in this work, the metal–organic frameworks (MOFs) mixed-matrix membrane (MMMs) served as the initial platform for the polydopamine (PDA)-based imprinting layer. The key to the fabrication of the MOFs MMMs was the employment of the rotary evaporation technique. The prepared boronate-affinity sol–gel molecularly imprinted membranes (BS-MIMs) played an important role in the high selectivity of the specific compound shikimic acid (SA) through covalent (boronate-affinity) and non-covalent (–OH and –NH2) effect. This new approach provides a more precise combination of simultaneously increasing selectivity (greater than 5.0) and adsorption capacity (up to 107.87 mg g−1). The efficiency of BSIT makes it extremely competitive for the development of selective separation membranes.
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