Synthesis and Application of Adsorbents Containing Cyclodextrins
Cyclodextrins(CDs)are derived from the enzymatic hydrolysis of starch,CDs are nontoxic,natural and inexpensive torus-shaped cyclic oligosaccharides.The interior cavity of the CD molecule is hydrophobic,which could trap aromatic contaminants through the host-guest and hydrophobic interaction to improve the adsorption efficiency and selectivity.Adsorbents containing cyclodextrins can be synthesized by the direct reaction of cyclodextrin and crosslinker or by the modification of the adsorbents using cyclodextrin.Adsorbents containing cyclodextrins have important applications in the fields of adsorption and separation.This review focuses on the research progress of adsorbents containing cyclodextrins in recent years.Different methods of the synthesis of adsorbents containing cyclodextrins are also summarized,and the adsorption characteristics of adsorbents containing cyclodextrins for organic molecules,heavy metal ions and organic dyes are classified and discussed too.Finally,the outlook on the future development of adsorbents containing cyclodextrins is presented.We hope that,this paper can arouse the interest of researchers to the study of adsorbents containing cyclodextrins,and provide some inspiration and new ideas for readers.
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