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Engineering the Mesopores of Fe3O4@Mesosilica Core-Shell Nanospheres through a Solvothermal Post-Treatment Method
Yang, Yan; Liu, Jia; Bai, Shiyang; Li, Xiaobo; Yang, Qihua
关键词Core-shell Structures Magnetic Properties Mesoporous Materials Nanostructures Solvothermal Methods
刊名CHEMISTRY-AN ASIAN JOURNAL
2013-03-01
DOI10.1002/asia.201201026
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
关键词[WOS]PORE-SIZE EXPANSION ; SILICA SHELL ; DRUG-DELIVERY ; QUANTUM DOTS ; NANOPARTICLES ; MICROSPHERES ; NANOCOMPOSITES ; FABRICATION ; SPHERES ; TRANSFORMATION
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.
语种英语
WOS记录号WOS:000315333200011
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被引频次:5[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/137493
专题中国科学院大连化学物理研究所
作者单位Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
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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.
APA Yang, Yan,Liu, Jia,Bai, Shiyang,Li, Xiaobo,&Yang, Qihua.(2013).Engineering the Mesopores of Fe3O4@Mesosilica Core-Shell Nanospheres through a Solvothermal Post-Treatment Method.CHEMISTRY-AN ASIAN JOURNAL,8(3),582-587.
MLA Yang, Yan,et al."Engineering the Mesopores of Fe3O4@Mesosilica Core-Shell Nanospheres through a Solvothermal Post-Treatment Method".CHEMISTRY-AN ASIAN JOURNAL 8.3(2013):582-587.
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