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Fabrication of hierarchically porous silica nanospheres through sol-gel process and pseudomorphic transformation
Jin, Changzi; Wang, Junhu; Wang, Yanjie; Tang, Hailian; Lu, Ting
关键词Silica Nanosphere Hierarchical Pore Sol-gel Process Pseudomorphic Transformation Pvp
刊名JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
2014-04-01
DOI10.1007/s10971-014-3273-0
70期:1页:53-61
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Technology
类目[WOS]Materials Science, Ceramics
研究领域[WOS]Materials Science
关键词[WOS]MESOPOROUS SILICA ; TEMPLATE ; SPHERES ; SHELL ; NANOPARTICLES ; SIZE ; NANOSTRUCTURES ; MORPHOLOGY ; PARTICLES ; RELEASE
英文摘要Hierarchically porous silica nanospheres with well-defined morphology and uniform particle size had been synthesized through a multistep sol-gel method combined with pseudomorphic transformation in the presence of polyvinylpyrrolidone (PVP) and cetyltrimethylammoium bromide (CTAB) as dual template. The prepared materials were characterized by small-angle X-ray diffraction, transmission electron microscopy, scanning electron microscopy, and nitrogen physical adsorption techniques. The preparation process and the origin of hierarchical structure were also investigated. It had been shown that the hierarchical structure of synthesized materials comprises wormlike framework mesopores with diameters of about 3 nm and bubble-like pores with diameters of 20-30 nm. CTAB and PVP behave as dual-template and are responsible for the formation of the mesopores and big pores, respectively. Not only the porous structure, but also the morphology and particle size of hierarchical materials can be adjusted by controlling the addition of PVP. In addition, the formation process of hierarchically porous silica was investigated by transmission electron microscopy, FT-IR spectra and thermo-gravimetric curves and a possible synthetic mechanism had been proposed.
语种英语
WOS记录号WOS:000333207800009
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被引频次:4[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/321008/145466
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, Lab Catalysts & New Mat Aerosp, Dalian 116023, Peoples R China
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GB/T 7714
Jin, Changzi,Wang, Junhu,Wang, Yanjie,et al. Fabrication of hierarchically porous silica nanospheres through sol-gel process and pseudomorphic transformation[J]. JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY,2014,70(1):53-61.
APA Jin, Changzi,Wang, Junhu,Wang, Yanjie,Tang, Hailian,&Lu, Ting.(2014).Fabrication of hierarchically porous silica nanospheres through sol-gel process and pseudomorphic transformation.JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY,70(1),53-61.
MLA Jin, Changzi,et al."Fabrication of hierarchically porous silica nanospheres through sol-gel process and pseudomorphic transformation".JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY 70.1(2014):53-61.
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