Fabrication and kinetic evaluation of dye adsorption capability of metal Oxide@RGO nanocomposites integrated cellulose triacetate membranes

Abstract

Reduced Graphene Oxide (RGO) and its derivatives exhibit remarkable removal abilities of water pollutants that can further be enhanced by the incorporation of the metallic nanoparticles. However, the challenging collection of GO sheets and fabrication method of RGO-based materials during the adsorption process, constraint their practical uses. The integration of the RGO-based materials on the polymeric matrix offers a solution to this problem. In current study, three types of metal oxide@RGO nanocomposites integrated Cellulose Triacetate (CTA) membranes with adsorption abilities were prepared by a facile blending and phase inversion technique. The fabricated membranes exhibited selective adsorption for azo dyes at room temperature. The adsorption parameters depicted the Langmuir and pseudo-first order kinetic order reaction. It was found that the adsorption process was directed by the inter-particle diffusion. These membranes were found to be effective against varying range of the pollutants and can be fabricated by the facile techniques.