Magnetic sweet graphene nanosheets: preparation, characterization and application in removal of methylene blue

Magnetic glucose-functionalized graphene nanosheets (GNS) were prepared, and the application of these biosorbents in the removal of methylene blue was investigated. Fe₃O₄ nanoparticles were deposited on sweet GNS using coprecipitation. The nanocomposites were analyzed by Fourier transform infrared spectroscopy, field emission scanning electron microscopy, transition electron microscopy, vibrating sample magnetometer and X-ray diffraction spectrometry. The resulted magnetic sweet GNS were superparamagnetic, responded quickly to an external magnetic field and exhibited efficient adsorption toward methylene blue, as a cationic dye. Noleachingwas observed even after aweek of placing amagnet close to the vial containing the solution ofmagnetic sweet GNS.

Keywords
Sweet graphene nanosheets; Click reaction; Magnetic nanoparticles; Methylene blue; Biosorbent