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题名: An improved Stober method towards uniform and monodisperse Fe3O4@C nanospheres
作者: Zhang, Xue-Bin1;  Tong, Hong-Wu1;  Liu, Shao-Min1;  Yong, Guo-Ping1;  Guan, Ya-Feng1, 2
刊名: JOURNAL OF MATERIALS CHEMISTRY A
发表日期: 2013
DOI: 10.1039/c3ta11249g
卷: 1, 期:25, 页:7488-7493
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Physical ;  Energy & Fuels ;  Materials Science, Multidisciplinary
研究领域[WOS]: Chemistry ;  Energy & Fuels ;  Materials Science
英文摘要: Significant progress has recently been made in the synthesis of Fe3O4@C nanospheres with uniform, monodisperse and tunable carbon shells. Fe3O4@C nanospheres were obtained by directly carbonizing Fe3O4@polymer which was synthesized by a versatile and economical Stober method with resorcinol and formaldehyde as precursors. The synthesis conditions in the formation of Fe3O4@polymer were systematically investigated. It was found that the yield of the Fe3O4@polymer is highly influenced by the concentration of ammonium hydroxide, and the monodispersity is mainly affected by the concentration of ammonium hydroxide and the citrate group sites outside the surfaces of the Fe3O4 nanospheres. Interestingly, carbonization of Fe3O4@polymer at high temperature makes the grain sizes of Fe3O4 in Fe3O4@C samples larger than those in the Fe3O4 sample, which makes the saturation magnetization value for the Fe3O4@C samples higher than those of common obtained materials. The adsorption performance of Fe3O4@C for anthracene was tested both in water and in cyclohexane solution; it shows fast adsorption rates (about 1 h to reach equilibrium in water and 3 h in cyclohexane solution) and high adsorption capacities (31.5 mg g(-1) in water and 2 mg g(-1) in cyclohexane solution), which are ascribed to its high uniformity and monodispersity. These make Fe3O4@C an ideal adsorption and enrichment material, especially for polycyclic aromatic hydrocarbons in water and in organic solvents.
关键词[WOS]: POLYCYCLIC AROMATIC-HYDROCARBONS ;  LITHIUM-ION BATTERIES ;  CORE-SHELL STRUCTURES ;  AQUEOUS-SOLUTION ;  CARBON SPHERES ;  SILICA SPHERES ;  NANOPARTICLES ;  PARTICLES ;  REMOVAL ;  POLYMER
语种: 英语
WOS记录号: WOS:000319886500025
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/137857
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Univ Sci & Technol China, Dept Chem, Hefei 230026, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Key Lab Separat Sci Analyt Chem, Lab Instrumentat & Analyt Chem, Dalian 116023, Liaoning, Peoples R China

Recommended Citation:
Zhang, Xue-Bin,Tong, Hong-Wu,Liu, Shao-Min,et al. An improved Stober method towards uniform and monodisperse Fe3O4@C nanospheres[J]. JOURNAL OF MATERIALS CHEMISTRY A,2013,1(25):7488-7493.
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