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 Fe