金属有机框架材料吸附VOCs影响因素研究进展

Influence factors of VOCs adsorption on metal-organic frameworks:the reviews

挥发性有机化合物(VOCs)对环境和人体健康均具有严重危害,而吸附法作为有效的VOCs脱除技术已得到广泛应用。在众多吸附剂中,金属有机框架材料(MOFs)以其极大的比表面积、可调节的孔径和可修饰性等优势,在VOCs脱除领域展示出良好的应用前景。本文首先介绍了在吸附过程中涉及到的吸附机理,从影响因素角度回顾了近年MOFs在VOCs吸附方面的研究进展。按照吸附质与吸附剂的几何结构、改性官能团、MOFs的金属位点、酸碱、水和碳材料复合等多个方面剖析了吸附过程中的影响因素,并将其分为内部影响因素和外部影响因素两大部分。针对影响因素归纳了提高吸附量的主要方法,并对MOFs吸附VOCs的吸附量进行了汇总。最后总结并展望了未来应用MOFs吸附VOCs的研究发展方向,期望为深入研究VOCs脱除技术提供有价值的参考。

Volatile organic compounds(VOCs)is a pollutant that is severely harmful for the environment and the human health.Fortunately,the adsorption method has obvious advantages in VOCs removal and has been widely used.Metal-organic frameworks(MOFs)have good application prospects in the field of VOCs removal because of its high surface area,adjustable pore size,and wonderful modification and so on.This article first introduced the adsorption mechanism involved in the adsorption process,and reviewed the recent research progress of MOFs in the adsorption of VOCs from the perspective of influencing factors.According to the geometric structure of adsorbate and adsorbent,modified functional groups,metal sites of MOFs,acid-base,water and carbon material composite,the influencing factors in the adsorption process were analyzed and divided into internal influencing factors and external factors.The main methods to increase the adsorption capacity of VOCs by MOFs were summarized according to the influencing factors.At the end of this paper the MOFs adsorption of VOCs was summarized and looked forward to the application prospect of adsorption VOCs by MOFs.These will be provided some valuable references to remove VOCs from flue gas by sorbents.