Comparative study on the behaviour of Chitosan-Gelatin based Hydrogel and nanocomposite ion exchanger synthesized under microwave conditions towards photocatalytic removal of cationic dyes. (1st March 2019)

• Record Type: Journal Article
• Authors: Kaur, Kuljit; Jindal, Rajeev
• Is Part Of: Carbohydrate polymers. Volume 207(2019)
• Page Start: 398
• Page End: 410
• Publication Date: 2019-03-01
• Subjects: CH chitosan -- GEL gelatin -- GLA glutaraldehyde -- MB methylene blue -- CH-GEL/ZSPNC (MW) chitosan-gelatin @ zirconium (IV) selenophosphate nanocomposite -- CH-GEL HPN (MW) chitosan-gelatin hybrid polymer network (microwave) -- IEC ion exchange capacity -- ZSP Zirconium (IV) selenophosphate -- PFO pseudo-first-order; Chitosan -- Nonlinear PFO -- Nanocomposite -- Langmuir -- Cationic dye -- Ion exchanger; Polysaccharides -- Periodicals; Polysaccharides -- Periodicals; Polysaccharides -- Périodiques; Electronic journals; 547.78
• DOI: 10.1016/j.carbpol.2018.12.002
• Languages: English
• ISSNs: 0144-8617

Abstract

Graphical abstract: Highlights: CH-GEL/ZSPNC (MW) removed 99% of cationic dye from solution as compared to the parent hybrid polymer network (12%). TEM and AFM results proved the particle size of the synthesized composite was in nano range. Adsorption kinetic data fitted well with non-linear PFO kinetic model. Abstract: The present work reports the comparison study of Chitosan-Gelatin based hydrogels with their nanocomposite ion exchangers synthesized under microwave conditions for the adsorption and photodegradation of the cationic dyes. In this report, the hydrogel based on Chitosan-Gelatin, more selective for anionic dyes is modified to nanocomposite ion exchanger by incorporating the zirconium (IV) selenophosphate to make it selective for cationic dyes. The nanocomposite was investigated with a tremendous hike in the degradation capacity (99% from 12%) of MB after being modified to nanocomposite ion exchanger. Adsorption process followed Langmuir adsorption (Qo = 10.46 mgg −1 ) and non linear PFO kinetic model with k1, qe (calculated), R 2, RMSE = 0.011, 1.02 (mgg −1 ), 0.996, and 0.01709 respectively.