Preparation and dye adsorbing properties of Fe3O4@carbon/graphene oxide composites
WU Ri-liang1, LIU Yun-fang1,2, REN Sen1, SHI Xiang-hui1,2, CHI Wei-dong1, HUANG Qi-gu1,2, YU Chang-yuan3, TIAN Xiao-jun3
1. State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China; 2. Key Laboratory of Carbon Fiber and Functional Polymers, Ministry of Education, Beijing University of Chemical Technology, Beijing 100029, China; 3. College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China
Abstract：Fe3O4@carbon/graphene oxide (Fe3O4@C/GO)composites were synthesized by hydrothermal method and characterized by X-ray diffraction, transmission electron microscopy, vibrating sample magnetometer. And their dye adsorbing properties were investigated. The results indicated that the Fe3O4 nanoparticles were uniformly anchored on GO sheets. The saturated adsorption capacities towards Rhodamine B (RhB) of the composites increased with the increase of GO content, initial RhB concentration and adsorbing temperature. And the higher GO content in the composite was, the quicker the absorbing rate was. The saturated adsorption capacity of the composite reached a maximum value when the pH value was 7. For the composite prepared at 0.8 of the mass ratio of GO to Fe3O4, the saturated adsorption capacity reached 303.4mg/g at 1000mg/L of initial RhB concentration.
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