Abstract:Using graphite as the raw materials, graphene was firstly synthesizedby improved Hummers and then graphene supported zero valence Fe nano particles(G-nZVI) were successfully prepared by liquid phase reduction method. Using scanning electron microscopy(SEM) and fourier transform infrared spectroscopy(FTIR) for materials characterization,the efficiency of removalCr(VI) from water by G-nZVI was studied.The results showed that at room temperature, more than 95% of Cr(VI) was removed from aqueous solution within 2 hours,when the G-nZVI addition amount was 0.4 g/L,an initial Cr(VI) concentration was 20 mg/L and the initial pH value was 3.0. Since G-nZVI is magnetic, so it can be removed by external magnetic force in order to prevent repeated pollution of water, which has good application prospects.