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β-Cyclodextrin assisted one-pot synthesis of mesoporous magnetic Fe_3O_4@C and their excellent performance for the removal of Cr(Ⅵ) from aqueous solutions

查看全文 作　　者：Hui [1,2]Zhang;De-Lei [2]Liu;Li-Li [3]Zeng;Meng [2]Li 高影响力作者 机构地区：[1]State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Southwest Petroleum University;[2]School of Chemistry and Chemical Engineering,Southwest Petroleum University;[3]Dushanzi Petrochemica Company高影响力机构 出　　处：《Chinese Chemical Letters》索引2013年第24卷第4期,共3页高影响力期刊 基　　金：supported by the Open Fund of State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation(No. PLN1132)in China,Scientific Research Fund of Sichuan Provincial Education Department and Scientific Research Foundation of the Southwest Petroleum University of China 摘　　要：Mesoporous magnetic Fe3O4@C nanoparticles have been synthesized by a one-pot approach and used as adsorbents for removal of Cr(Ⅳ) from aqueous solution.Magnetic iron oxide nanostructured materials encapsulated by carbon were characterized by scanning electron microscope(SEM),nitrogen adsorption and desorption,X-ray diffraction(XRD) and Fourier transform infrared(FTIR) spectroscopy.The adsorption performance of the nanomaterial adsorbents is tested with the removal of Cr(Ⅳ) from aqueous solution.The results reveal that the mesoporous magnetic Fe3O4@C nanospheres exhibit excellent adsorption efficiency and be easily isolated by an external magnetic field.In comparison with magnetic Fe3O4 nanospheres,the mesoporous magnetic Fe3O4@C exhibited 1.8 times higher removal rate of Cr(Ⅵ).The mesoporous structure and an abundance of hydroxy groups on the carbon surface may be responsible for high absorbent capability. 关 键 词：CR(VI) 磁性氧化铁 Fe304 一锅法合成 介孔结构 性能测试 水溶液 环糊精
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