Synchronous role of coupled adsorption and photocatalytic oxidation on hybrid nanomaterials of pectin and nickel ferrite generating excellent removal efficiency for toxic dye effluents
Hybrid nanomaterials of pectin and nickel ferrite were fabricated which served as potential environmentally benign materials for the treatment of toxic pollutants. Pectin and nickel ferrite mutually link and coexist to form nanocomposites which possess coupled performance of adsorption and photocatalytic oxidation. Various characterization techniques such as powder XRD, FT-IR, VSM, FE-SEM, HR-TEM and DRS were employed to systematically elucidate the structural and surface properties of synthesized nanocomposites. Influence of varying weight % of pectin in the nanocomposites was also investigated in order to perceive the effect of change of concentration on the adsorptive degradation efficiency. The rate constant value for the removal of methylene blue and remazol black using pectin-nickel ferrite (5:1) nanocomposite was 14.7 × 10-2 min-1 and 10.9 × 10-2 min-1 respectively while using nickel ferrite, it was calculated to be 2.75 × 10-2 min-1 and 1.22 × 10-2 min-1 respectively. Thus the nanocomposites exhibited much enhanced removal efficiency as compared to bare nickel ferrite nanoparticles. The results elucidated the synchronous role of coupled adsorption and photocatalytic oxidation leads to excellent removal efficiency by the nanocomposites. The inherent magnetic character of nickel ferrite facilitates simplistic external magnet aided recovery of the hybrid nanomaterial. It is anticipated that the designed hybrid nanomaterial will serve as eco-friendly, economically viable, highly efficient and reusable catalyst for the removal of toxic organic pollutants.