Chitosan-Hydroxyethyl Cellulose Aerogels Prepared from Borate-Modified Attapulgite for the Adsorption of Rhodamine B Dye
Sodium tetraborate was utilized for modifying the intaglio clay,introducing the boric acid group to enhance the material's selectivity towards the dye.It was then cross-linked with chitosan and hydroxyethyl cellulose to fabricate STB-ATP@CS-HEC aerogel,intended for the removal of rhodamine B dye.The physicochemical characterization results revealed favorable swelling properties of the aerogel,reaching equilibrium within 60 minutes at a swelling ratio of 1 172.5% .The adsorption behavior of the aerogel on rhodamine B dye could be accurately described using the quasi-secondary model,Temkin and Freundlich isotherm models,primarily indicating chemical monomolecular layer adsorption.When 20 mg of the 303 K material was introduced into 50 mL of RhB dye with an initial concentration of 250 mg/L,the adsorption amount reached 178.83 mg/g.The material exhibited promising adsorption regeneration capability,thus demonstrating its potential for application in dye wastewater treatment.
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维普
