Comparative study on the behaviour of Chitosan-Gelatin based Hydrogel and nanocomposite ion exchanger synthesized under microwave conditions towards photocatalytic removal of cationic dyes

Kuljit Kaur; Rajeev Jindal

doi:10.1016/j.carbpol.2018.12.002

Comparative study on the behaviour of Chitosan-Gelatin based Hydrogel and nanocomposite ion exchanger synthesized under microwave conditions towards photocatalytic removal of cationic dyes

Carbohydr Polym. 2019 Mar 1:207:398-410. doi: 10.1016/j.carbpol.2018.12.002. Epub 2018 Dec 4.

Authors

Kuljit Kaur¹, Rajeev Jindal²

Affiliations

¹ Department of Chemistry, Dr B R Ambedkar National Institute of Technology, Jalandhar, 144011, Punjab, India.
² Department of Chemistry, Dr B R Ambedkar National Institute of Technology, Jalandhar, 144011, Punjab, India. Electronic address: jindalr@nitj.ac.in.

PMID: 30600022
DOI: 10.1016/j.carbpol.2018.12.002

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 (Q_o = 10.46 mgg^-1) and non linear PFO kinetic model with k₁, qe (calculated), R², RMSE = 0.011, 1.02 (mgg^-1), 0.996, and 0.01709 respectively.

Keywords: Cationic dye; Chitosan; Ion exchanger; Langmuir; Nanocomposite; Nonlinear PFO.