Synthesis of octagonal microdisks assembled from anatase TiO2 nanosheets with exposed {001} facets

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	Synthesis of octagonal microdisks assembled from anatase TiO2 nanosheets with exposed {001} facets
	Hu, Xiaoyi ; Hu XY(胡晓毅)
刊名	http://dx.doi.org/10.1016/j.ceramint.2014.06.109
	2014
关键词	Aromatic compounds Nanosheets Photocatalysis Precipitation (chemical) Sintering
英文摘要	Octagonal TiO2 microdisks constructed orderly from anatase nanosheet building blocks (NSBBs) with exposed {001} facets were synthesized using a facile liquid phase precipitation method combined with subsequent heat treatment. The in-situ generated BF4- and F- adsorbed onto {001} facets of NH4TiOF3 (as precursor of TiO2) decreased the surface energy instead of extremely poisonous and corrosive HF. Polymer surfactant is likely to further stabilize the {001} facets and it may induce NH4TiOF3 nanocrystals as a linkage to align high-orderly by lateral expansion for the formation of NH 4TiOF3 mesocrystals. Sintering temperature for the heat treatment of NH4TiOF3 microdisks has a considerable effect on TiO2 microdisks for the extent of exposure of the {001} surface. Symmetrically growths on [100] and [110] directions parallel to the {001} surface are favored which lead to the well-defined octagonal flat-shape. TiO2 microdisks show an excellent adsorption capacity in dark and enhanced reactive activity under irradiation of UV-light for the degradation of methylene blue, owing to the high-ordered organization of nanosheets and large exposure of high-energy facets. ? 2014 Elsevier Ltd and Techna Group S.r.l.
语种	英语
出版者	Elsevier Ltd
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/92938]
专题	信息技术－已发表论文
推荐引用方式 GB/T 7714	Hu, Xiaoyi,Hu XY. Synthesis of octagonal microdisks assembled from anatase TiO2 nanosheets with exposed {001} facets[J]. http://dx.doi.org/10.1016/j.ceramint.2014.06.109,2014.
APA	Hu, Xiaoyi,&胡晓毅.(2014).Synthesis of octagonal microdisks assembled from anatase TiO2 nanosheets with exposed {001} facets.http://dx.doi.org/10.1016/j.ceramint.2014.06.109.
MLA	Hu, Xiaoyi,et al."Synthesis of octagonal microdisks assembled from anatase TiO2 nanosheets with exposed {001} facets".http://dx.doi.org/10.1016/j.ceramint.2014.06.109 (2014).