Different dimensional silica materials prepared using shaped block copolymer nanoobjects as catalytic templates

	Different dimensional silica materials prepared using shaped block copolymer nanoobjects as catalytic templates
	Yao, Dongdong 2,3; Chen, Yongming 1,2; Jin, Renhua
刊名	JOURNAL OF MATERIALS CHEMISTRY B
	2015
卷号	3 期号:28 页码:5786-5794
英文摘要	A general approach to fabricate a series of silica nanoobjects with sheet-like, tubular and hollow spherical shapes was reported. These silica nanoobjects were prepared by using water-dispersed diblock copolymer nanoobjects with glassy polystyrene cores and densely grafted poly(2-(dimethylamino) ethylmethacrylate) (PDMAEMA) shells as templates as well as catalysts. A sol-gel reaction of tetramethoxysilane (TMOS) was subsequently induced by PDMAEMA shells of shaped nanoobjects in water dispersions at near-neutral pH and under ambient conditions, and thus the shaped polymer@silica hybrids with a high silica content (around 70 wt% silica in hybrids) were obtained. Then silica nanoobjects of three different dimensions were further prepared by calcination at 650 degrees C to remove the organic components. The spherical and cylindrical silicas have a hollow structure. Formation of diblock copolymers, polymer nanoobjects, polymer@silica hybrids, and silica nanoobjects was characterized by H-1 NMR spectroscopy, size exclusion chromatography (SEC), small-angle X-ray scattering (SAXS), transmission electron microscopy (TEM), scanning electron microscopy (SEM), thermogravimetric analysis (TGA), solid state Si-29 CPMAS NMR analysis, N-2 adsorption-desorption measurements, and Fourier-transform infrared spectroscopy (FT-IR). This methodology could be a general approach to fabricate various inorganic nanoparticles with different geometric shapes.
收录类别	SCI
语种	英语
公开日期	2015-10-27
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/27829]
专题	化学研究所_高分子物理与化学实验室
作者单位	1.Sun Yat Sen Univ, Sch Chem & Chem Engn, Key Lab Polymer Composite & Funct Mat, Minist Educ,Dept Polymer & Mat Sci, Guangzhou 510275, Guangdong, Peoples R China 2.Kanagawa Univ, Dept Mat & Life Chem, Fac Engn, Yokohama, Kanagawa 2218686, Japan 3.Chinese Acad Sci, Inst Chem, Lab Polymer Phys & Chem, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Yao, Dongdong,Chen, Yongming,Jin, Renhua. Different dimensional silica materials prepared using shaped block copolymer nanoobjects as catalytic templates[J]. JOURNAL OF MATERIALS CHEMISTRY B,2015,3(28):5786-5794.
APA	Yao, Dongdong,Chen, Yongming,&Jin, Renhua.(2015).Different dimensional silica materials prepared using shaped block copolymer nanoobjects as catalytic templates.JOURNAL OF MATERIALS CHEMISTRY B,3(28),5786-5794.
MLA	Yao, Dongdong,et al."Different dimensional silica materials prepared using shaped block copolymer nanoobjects as catalytic templates".JOURNAL OF MATERIALS CHEMISTRY B 3.28(2015):5786-5794.