Immobilizing magnetic glutaraldehyde cross-linked chitosan on graphene oxide and nitrogen-doped graphene oxide as well-dispersible adsorbents for chromate removal from aqueous solutions

Glutaraldehyde cross-linked chitosan with an Fe3O4 core was prepared and immobilized on the graphene oxide and nitrogen-doped graphene oxide surfaces to achieve magnetic nanocomposites as excellent adsorbents for removal of chromate. The prepared magnetic nanocomposite adsorbents were characterized. Then, the applicability of these nanocomposites for adsorptive removal of chromate was investigated and the adsorption conditions were optimized. In...