Progress in the Immobilization of β-Cyclodextrin and Their Application in Adsorption of Environmental Pollutants

beta-Cyclodextrin has been widely applied in the adsorption of environmental pollutants due to its unique characteristics in structure, and its physical and chemical properties. This review describes some new methods and strategies in the immobilization of beta-cyclodextrin to construct adsorbents and their application in the adsorption of environmental pollutants, and some absorbent mechanisms are also discussed. The supporters involved mainly include the inorganic materials, organic polymers, and natural polymers. The immobilization of beta-cyclodextrin to construct adsorbents can not only make full use of the inherent advantage in the structure of beta-cyclodextrin, but also poss the advantage of immobilization, which can enhance the adsorption performance of adsorbents and their retrievabilities, and meanwhile no additional pollution happens during their application. It is very important in the greenization of adsorbent.