A perspective on recent advances in polysaccharide/covalent organic framework composite materials with applications potential in water remediation

Abstract

Researching the potential of various composite materials to remove water pollutants is an important issue for scientists, and polysaccharides are considered desirable materials in this field. Despite the unique advantages, combining these natural materials with a secondary component, especially porous compounds, could improve the performance of the desired system. Recently, highly porous constructs, such as covalent organic frameworks (COFs), was introduced for the composition of polysaccharides. Also, this combinations can solve the aggregation concern of COFs in water treatment areas. Therefore, the composition of the polysaccharides and COF materials effectively has demonstrated their ability to remove contaminants. The hydrogels, films, aerogels, and membranes are some formulations for these kind systems. When polysaccharides are combined with other substances like COF and Fe₃O₄ the resulting system displays new properties that expand its applicability while having the properties of both components. A survey of the published reports shows that up to now some comprehensive research explored the potential of polysaccharide/COF composite materials for water treatment. Considering these, the current mini review paper highlights the conducted studies on evaluated polysaccharide/COF composite materials, with a focus on the chitosan (CS), cellulose, alginate, and κ-carrageenan for water treatment containing various pollutants such as dyes, metals, pharmaceuticals and other chemical compounds.

Keywords: Chemical compounds removal; Covalent organic framework; Dye removal; Metal removal; Pharmaceutical removal; Polysaccharide; Water treatment.