Due to the limitation of size and specific surface area of traditional adsorbent materials

itisurgentto seek new types of adsorbent materials. Through the study of the structure and properties of chitosan and nanomaterials

a variety of chitosan nano-substrate has been widely used. In this paper

the application of chitosan nanomaterials in purifying drinking water was described briefly

and the progress of chitosan nano-materials for removal of dyes and heavy metal ions from wastewater in recent years was reviewed. The current problems and future development of chitosan-nanomaterialswere summarized

which lays a theoretical foundation for the further development of excellent adsorption materials.