Fe3O4/Reduced Graphene Oxide Nanocomposite: Synthesis and Its Application for Toxic Metal Ion Removal

The synthesis of reduced graphene oxide modified by magnetic iron oxide (fe3o4/rgo) and its application for heavy metals removal were demonstrated. the obtained samples were characterized by x-ray diffraction (xrd),nitrogen adsorption/desorption isotherms,x-ray photoelectron spectroscopy (xps),fourier transform infrared spectroscopy (ft-ir),and magnetic measurement. the results showed that the obtained graphene oxide (go) contains a small part of initial graphite as well as reduced oxide graphene. go exhibits very high surface area in comparison with initial graphite. the morphology of fe3o4/rgo consists of very fine spherical iron nanooxide particles in nanoscale. the formal kinetics and adsorption isotherms of as(v),ni(ii),and pb(ii) over obtained fe3o4/rgo have been investigated. fe3o4/rgo exhibits excellent heavy metal ions adsorption indicating that it is a potential adsorbent for water sources contaminated by heavy metals. © 2016 nguyen thi vuong hoan et al.