Novel magnetic graphene oxide functionalized cyanopropyl nanocomposite as an adsorbent for the removal of Pb(II) ions from aqueous media: equilibrium and kinetic studies

Environmental Science and Pollution Research International
Mohammad Ali GabrisRahman Saidur

Abstract

This work presents the synthesis of the novel silica-cyanopropyl functionalized magnetic graphene oxide (MGO/SiO2-CN) hybrid nanomaterial derived by sol-gel method as a cheap efficient magnetic sorbent for the removal of extremely hazardous lead ions from aqueous media. The integration of the magnetic property, the carbon substrate, and the nitrile (-C ≡ N) containing organic grafted silica matrix promoted the adsorption capability against lead ions along with its simple synthesis recovery and low cost. The prepared nanocomposite was comprehensively characterized by Fourier transform infrared spectroscopy, scanning electron microscopy, and energy-dispersive X-ray spectroscopy. Adsorption of lead was found to be pH dependent because of the charged nature of both analyte and adsorbent surface. Adsorption experiments were conducted under the optimum conditions, and the obtained experimental data from atomic absorption spectroscopy were analyzed using the popular isothermal models namely Langmuir, Freundlich, and Dubinin-Radushkevich isotherms as well as kinetically studied and evaluated for adsorption standard free energy (E). The experimental results have demonstrated the enhanced adsorption capability of the proposed sorbent nan...Continue Reading

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Citations

May 12, 2019·Environmental Science and Pollution Research International·Maryam FayaziAida Iraji
Dec 17, 2018·Daru : Journal of Faculty of Pharmacy, Tehran University of Medical Sciences·Somayeh Koupaei MalekHamid Rashidi Nodeh
Oct 9, 2020·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Sayed Zia MohammadiFarideh Mosazadeh
Mar 22, 2020·Environmental Research·Tiago José Marques FragaMaurício Alves da Motta Sobrinho

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