Sesbania gum-based magnetic carbonaceous nanocomposites: Facile fabrication and adsorption behavior

Magnetic carbonaceous polysaccharide composites (Fe3O4@CPS) with excellent adsorption behavior were facilely synthesized through hydrothermal process by using sesbania gum served as carbon resource. Evidence for the synthesis has been inferred from different techniques like transmission electron microscopy (TEM), X-ray diffraction (XRD), thermogravimetric analysis (TGA), Brunauer-Emmett-Teller (BET), and Fourier transform infrared (FTIR). The nanocomposites are spherical with the particle size ranged from 10 nm to 16 nm and the surface area of 55 m(2) g(-1). The removal capability of nanocomposites for metallic ion contaminants was determined by batch adsorption procedure. The isotherms and kinetics of adsorption process were analyzed and discussed in detail. The as-prepared nanocomposites also displayed super-paramagnetic property with a saturation magnetization value of 15 emu g(-1), which make the sesbania gum-based magnetic nanocomposites recyclable for adsorption application. (C) 2014 Elsevier B.V. All rights reserved.