Highly efficient absorption of cationic dyes by nano composite hydrogels based on κ-carrageenan and nano silver chloride.

Novel nanocomposite hydrogel was synthesized based on κ-carrageenan and nano-silver chloride by a simple method and applied for the removal of cationic dyes in aqueous solution. Inclusion of nano-silver chloride into the superabsorbent hydrogel was utilized for producing the effective dye absorbent. The dye absorption was more than 98% after 5min in a 10ppm aqueous solution at pH=6.