Highly Enhanced Adsorption For The Removal of Hg (II) From Aqueous Solution By Co-Polymerized Al2O3 Nanocomposites Fabricated By Improved Sol-Gel Combustion Route: Synthesis, Adsorption Kinetics & Isotherm Modelling

Abstract

The synthesis, characterization and capacity studies of co-polymerized Al2O3 nanocomposites capable of adsorbing with Hg(II) ions are reported. Al2O3 nanoparticles was fabricated with combustion synthesis using inexpensive mixed fuels. Nanocomposite of poly (aniline-CO-O-anthranilic acid) (PANAA/ Al2O3) was synthesized by chemical oxidative polymerization of anthranilic acid and aniline co-monomers at equimolar ratios (1:1) with the Al2O3 nanostructure. The product was characterized by FT-IR, XRD, SEM and TEM techniques. The adsorption behaviors of the toxic Hg(II) were studied. The equilibrium isotherm, kinetics parameters and the thermodynamics investigations of the adsorption process were calculated. Thermodynamics investigations also confirmed that the adsorption capacity of Hg(II) on each adsorbent was spontaneous and exothermic.

Grapefruit Extract-Mediated Fabrication of Photosensitive Aluminum Oxide Nanoparticle and Their Antioxidant and Anti-Inflammatory Potential

“…Various strategies for the preparation of Al 2 O 3 nanomaterials have been described in literature, such as sol-gel [ 21 ], sputtering [ 22 ], pyrolysis [ 23 ], hydrothermal reactions [ 24 ], laser ablation [ 25 ], and ball milling [ 26 ]. However, all these conventional approaches require the use of high energy, pressure, temperature, and hazardous chemicals from various toxic by-products, which are a huge threat to the environment [ 27 ].…”