Accelerating the design of multilevel/hierarchical imprinted membranes for selective separation applications: A biomass-activated carbon/GO-based loading system
Accelerating the design of multilevel/hierarchical imprinted membranes for selective separation applications: A biomass-activated carbon/GO-based loading system
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DOI：
10.1016/j.seppur.2020.117176
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发表时间：
2020-11
影响因子：
8.6
通讯作者：
Yilin Wu;Rongxin Lin;Faguang Ma;W. Xing;Jia Gao;Xinyu Lin;Jian Lu;Chao Yu;Ming Yan
中科院分区：
文献类型：
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作者：
Yilin Wu;Rongxin Lin;Faguang Ma;W. Xing;Jia Gao;Xinyu Lin;Jian Lu;Chao Yu;Ming Yan
设计具有优良综合性能的功能膜的尝试已有很多，如何在一个膜中同时获得良好的选择性和渗透通量是面临的挑战。在本工作中，首次提出了一种具有层次化结构的颠覆性合成策略，用于制备基于聚合(PDA)的活性碳颗粒(ACPs)/GO纳米复合印迹膜(P-AGNms)。首先在ACPS/GO表面进行基于PDA的印迹过程，以合成基于PDA的普萘洛尔印迹位点，然后通过创新的静电纺丝工艺获得P-AGNM。基于普萘洛尔印迹的PDA-ACPS/GO共混膜结构，实现了对普萘洛尔的吸附选择性和渗透选择性的同时改善。具有良好的复合能力(54.9mg.g−-1)、快速的吸附动力学和选择系数(大于3.5m g)。重要的是，优化的实验结果有力地表明，PDA修饰的表面上设计的心得安印迹位点对于提高P-AgNMs的重结合能力起着至关重要的作用。此外，所制备的P-AGNms的合成没有复杂的步骤和对环境的污染，这表明所设计的P-AGNms的合成方法在选择性分离领域具有很大的应用潜力。
There has been plenty of attempts to engineer functional membranes with excellent comprehensive properties, figuring out how to both achieve excellent selectivity and permeation flux in one membrane is facing challenges. In this work, a subversive synthesis strategy with hierarchical structure was first proposed for the preparation of polymerization (PDA)-based activated carbon particles (ACPs)/GO nanocomposite imprinted membranes (P-AGNMs). A PDA-based imprinting process was initially performed on ACPs/GO surfaces to synthesize the PDA-based propranolol-imprinted sites, the P-AGNMs were then obtained through an innovative electrostatic spinning process. Based on the propranolol-imprinted PDA-ACPs/GO blended membrane structure, simultaneous benefits in both adsorption selectivity and permselectivity performance toward propranolol had been accomplished. Specifically, excellent rebinding capacity (54.9 mg g−1), fast adsorption kinetics and permselectivity coefficients (more that 3.5) could be easily obtained. Importantly, the optimized experimental results strongly suggested that the as-designed propranolol-imprinted sites from PDA-modified surfaces played crucial roles for obtaining increasing rebinding capacities of P-AGNMs. In addition, the as-prepared P-AGNMs were synthesized without complicated procedures and polluting the environment, which demonstrated that the as-designed synthesis methodology of P-AGNMs had great potential for applications in selective separation field.