Synthesis and characterization of different metal oxide and GO composites for removal of toxic metal ions

<p>This manuscript deals with graphene oxide (GO) and GO–metal oxide composite for heavy metal adsorption. Metal oxide–GO composites <i>e.g</i>. Fe₃O₄–GO and Mn₃O₄–GO have been prepared and explored for heavy metals <i>e.g</i>. lead, chromium, nickel, cadmium etc. adsorption from the water. Metal oxide–GO composites have been prepared through respective techniques. The various characterizations of the nanocomposites viz. structural and thermal have been analysed by transmission electron microscopy, thermogravimetric analyser etc. Different concentration of heavy metal has been taken to examine the efficiency of composites towards adsorption. Furthermore, effect of time on adsorption has also been evaluated. Metal oxide–GO composites illustrate better results as compared to GO showing the usability of composites for heavy metal adsorption for the production of clean water.