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题名: Engineering the Mesopores of Fe3O4@Mesosilica Core-Shell Nanospheres through a Solvothermal Post-Treatment Method
作者: Yang, Yan1;  Liu, Jia1;  Bai, Shiyang1;  Li, Xiaobo1;  Yang, Qihua1
关键词: core-shell structures ;  magnetic properties ;  mesoporous materials ;  nanostructures ;  solvothermal methods
刊名: CHEMISTRY-AN ASIAN JOURNAL
发表日期: 2013-03-01
DOI: 10.1002/asia.201201026
卷: 8, 期:3, 页:582-587
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Multidisciplinary
研究领域[WOS]: Chemistry
英文摘要: A solvothermal post-treatment method was developed to synthesize Fe3O4@mesosilica core-shell nanospheres (CSNs) with a well-preserved morphology, mesoporous structure, and tunable large pore diameters (2.5-17.6 nm) for the first time. N,N-Dimethylhexadecylamine (DMHA), which was generated in situ during the heat-treatment process, was mainly responsible for this pore-size enlargement, as characterized by NMR spectroscopy. This pore-size expansion can be strengthened with the aid of hexamethyldisilazane (HMDS), whilst the nature of the surface of the Fe3O4@mesosilica CSNs can be easily modified with trimethylsilyl groups during the pore-size-expansion process. The hydrophobicity of the Fe3O4@mesosilica CSNs increased for the enlarged mesopores and the adsorption capacity of these CSNs for benzene (up to 1.5 g g(-1)) is the highest ever reported for Fe3O4@mesosilica CSNs. The resultant Fe3O4@mesosilica CSNs (pore size: 10 nm) showed a 3.6-times higher adsorption capacity of lysozyme than those without the pore expansion (pore size: 2.5 nm), thus making them a good candidate for loading large molecules.
关键词[WOS]: PORE-SIZE EXPANSION ;  SILICA SHELL ;  DRUG-DELIVERY ;  QUANTUM DOTS ;  NANOPARTICLES ;  MICROSPHERES ;  NANOCOMPOSITES ;  FABRICATION ;  SPHERES ;  TRANSFORMATION
语种: 英语
WOS记录号: WOS:000315333200011
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/137493
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.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China

Recommended Citation:
Yang, Yan,Liu, Jia,Bai, Shiyang,et al. Engineering the Mesopores of Fe3O4@Mesosilica Core-Shell Nanospheres through a Solvothermal Post-Treatment Method[J]. CHEMISTRY-AN ASIAN JOURNAL,2013,8(3):582-587.
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