壳聚糖基吸附材料去除水中有机染料的研究进展

Progress on removal of organic dyes in water by chitosan-based adsorption materials

壳聚糖是一种丰富的天然生物多糖,具有无毒、生物相容性好、生物可降解等众多优异性能。由于壳聚糖分子结构上的氨基、羟基等可作为吸附位点,因此它成为了吸附领域的研究热点。综述了近些年来壳聚糖基吸附材料的改性及其在染料吸附方面的研究进展,指出壳聚糖基吸附材料吸附有机染料的主要机理为:静电吸引、络合作用、氢键作用、π-π相互作用和物理吸附作用。基于目前的研究现状,指出壳聚糖基吸附材料在该领域研究中应着重考虑再生性、选择性和分离性。

Chitosan is a rich natural bio-polysaccharide with excellent properties such as non-toxicity,good biocompatibility and biodegradability.Because the amino groups and hydroxyl groups on the molecular structure of chitosan can be used as adsorption sites,chitosan has become a research hotspot in the field of adsorption.This article reviewed the research and application of chitosan-based adsorption materials in the adsorption of organic dyes in recent years,and pointed out the main mechanisms of chitosan-based adsorption materials in the adsorption of organic dyes,including electrostatic attraction,complexation,hydrogen bonding,π-πinteraction and physical adsorption.Based on the current research status,this article put forward that the research of chitosan-based adsorption materials should focus on their regeneration,selectivity and separation.