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A review of nano-carbon based molecularly imprinted polymer adsorbents and their adsorptionmechanism
New Carbon Materials ( IF 6.5 ) Pub Date : 2020-11-13 , DOI: 10.1016/s1872-5805(20)60503-0
Lei Qin , Wei-feng Liu , Xu-guang Liu , Yong-zhen Yang , Li-an Zhang

Nanocarbon materials have become a class of ideal supports for surface molecularly imprinted materials because of their low density, high strength, environment-friendliness, controllable structure and modifiable surface. Thus, nanocarbon-based surface molecularly imprinted polymer adsorbents (C-SMIPs) have achieved satisfactory performance for the removal and enrichment of organic compound pollutants in liquids. This review summarizes C-SMIPs based on various nanocarbon materials for the treatment of ecological environmental pollutants in water during the last five years. The structural characteristics and adsorption features of these C-SMIPshave been comprehensively and systematically analyzed and compared. It is found that the low limit of adsorption capacity is usually decided by the carbon support while the upper limit depends more on the imprinted layer. Specifically, C-SMIPs based on porous carbon nanospheres or graphene oxide usually have large adsorption capacities. It can also be inferred that the essence of C-SMIP adsorption towards target molecules is physical adsorption at the solid-liquid interfaces, the chemical-like adsorption found in the literature is caused by an extremely strong interaction between active sites and the adsorbate by multiple non-covalent bonds like ionic bonds, hydrogen bonds, electrostatic interactions, and van der Waals forces, which settles the long-standing controversy on the nature of adsorption for C-SMIPs. Moreover, analysis and discussion of the literature provide some theoretical and practical evidence for support optimization, imprinting method amelioration, and adsorption parameter selection, which may promote the development and applications of C-SMIPs.



中文翻译:

纳米碳基分子印迹聚合物吸附剂及其吸附机理综述

纳米碳材料由于其低密度,高强度,环境友好,可控制的结构和可修饰的表面,已成为表面分子印迹材料的理想载体。因此,基于纳米碳的表面分子印迹聚合物吸附剂(C-SMIP)在去除和富集液体中的有机化合物污染物方面取得了令人满意的性能。这篇综述总结了过去五年中基于各种纳米碳材料的C-SMIPs,用于处理水中的生态环境污染物。对这些C-SMIP的结构特征和吸附特性进行了全面,系统的分析和比较。发现吸附容量的下限通常由碳载体决定,而上限更多地取决于压印层。具体地,基于多孔碳纳米球或氧化石墨烯的C-SMIP通常具有大的吸附能力。还可以推断,C-SMIP对目标分子的吸附本质是固液界面处的物理吸附,文献中发现的类化学吸附是由于活性位点与被吸附物之间的极强相互作用引起的。非共价键,例如离子键,氢键,静电相互作用和范德华力,这解决了有关C-SMIP吸附性质的长期争论。此外,

更新日期:2020-11-13
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