MAGNETIC REDUCED GRAPHENE OXIDEAS ADVANCED MATERIALS FORADSORPTION OF METAL IONS. Magnetic Reduced Graphene Oxide (MRGO) is graphene-based material that modified by introducing iron oxide nanoparticles onto the surface of graphene oxide (GO). MRGO exhibit some unique and advanced properties and characteristic including high surface area, superparamagnetic characteristics and adsorption ability against ions and molecules. In this research, MRGO was prepared by the Hummers method, followed by reacting ferrochloride tetrahydrate and ferrichloride hexahydrate through co-precipitation method for the formation of iron oxide nanoparticles on the GO surface. MRGO was prepared with various composition of ferrochloride tetrahydrate. Furthermore, the resultant of MRGO was characterized by Scanning Electron Microscope (SEM), Fourier-transform Infrared (FT-IR) Spectroscopy, and Atomic Adsorption Spectroscopy (AAS). Adsorption characteristics test was conducted against electroplating waste-based metal ion. The SEM results showed that GO exhibited the layered structure meanwhile MRGO exhibit as Feƒ O 4-modified GO layered surfaces. MRGO made by different ferrochloride tetrahydrate differed in the iron oxide nanoparticles formation on the surface of GO. Increasing the composition of ferrochloride tetrahydrate increased the formation of iron oxide nanoparticles. Moreover, MRGO (FeCl‚ .4H‚ O 0.0064 M) is successfully applied as nickel metal ion adsorbents with the adsorption ability of 78,24%. This result showed that MRGO have a potential prospect as an effective and efficient advanced adsorbent material candidate.
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