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	Facile preparation of titania hollow spheres by combination of the mixed solvent method and the sol-gel process and post-calcination
	Du, Xin1,2,3; He, Junhui1,2
刊名	Materials research bulletin
	2009-06-03
卷号	44期号:6页码:1238-1243
关键词	Composite Ceramics Nanostructures Sol-gel chemistry
ISSN号	0025-5408
DOI	10.1016/j.materresbull.2009.01.010
通讯作者	He, junhui(jhhe@mail.ipc.ac.cn)
英文摘要	Polystyrene (core)-titania (shell) composite spheres consisting were readily prepared by a sol-gel process of titanium tetrabutoxide (tbot) in a mixed solvent of ethanol/acetonitrile (3: 1, v/v). smooth and homogeneous titania coatings formed when the mixed solvent was dehydrated by anhydrous sodium sulfate. the thickness and surface roughness of titania coating increase with increase of the tbot concentration. by adjusting the tbot concentration in the range of 5.8-29.0 mm, the size of titania-coated ps spheres could be varied from 990 to 1125 nm. calcination at elevated temperature gave dense, homogeneous, robust shells of anatase titania. the sizes of titania hollow spheres are 11.3-16.9% smaller than those of the titania-coated ps spheres as a result of calcination-induced shrinkage. the composite and hollow spheres were characterized by scanning electron microscopy, transmission electron microscopy and electron diffraction measurements. these core-shell organic-inorganic spheres and hollow ceramic spheres may have wide applications in catalysts, adsorbents, lightweight fillers, capsules, etc. (c) 2009 elsevier ltd. all rights reserved.
WOS关键词	MANGANESE OXIDE NANOSTRUCTURES ; PARTICLES ; NANOPARTICLES ; MICROSPHERES ; NANOSPHERES ; MORPHOLOGY ; CRYSTALS ; RELEASE ; SIZE
WOS研究方向	Materials Science
WOS类目	Materials Science, Multidisciplinary
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000265906600008
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2398563
专题	中国科学院大学
通讯作者	He, Junhui
作者单位	1.Chinese Acad Sci, Tech Inst Phys & Chem, Funct Nanomat Lab, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Tech Inst Phys & Chem, Key Lab Photochem Convers & Optoelect Mat, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Grad Univ, Beijing 100864, Peoples R China
推荐引用方式 GB/T 7714	Du, Xin,He, Junhui. Facile preparation of titania hollow spheres by combination of the mixed solvent method and the sol-gel process and post-calcination[J]. Materials research bulletin,2009,44(6):1238-1243.
APA	Du, Xin,&He, Junhui.(2009).Facile preparation of titania hollow spheres by combination of the mixed solvent method and the sol-gel process and post-calcination.Materials research bulletin,44(6),1238-1243.
MLA	Du, Xin,et al."Facile preparation of titania hollow spheres by combination of the mixed solvent method and the sol-gel process and post-calcination".Materials research bulletin 44.6(2009):1238-1243.

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