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	Synthesis of Nanocrystalline TiO2 by a Salt-Leaching Assisted Sol-Gel Method and Their Photoelectrochemical Properties
	Chen, Da ; Wang, Geng ; Zhang, Hao ; Li, Jinghong
	2010-10-12 ; 2010-10-12
关键词	Nanocrystalline TiO2 Sol-Gel Method Salt-Leaching Photoelectrochemical Properties THIN-FILMS PHOTOCATALYTIC ACTIVITY ANATASE PARTICLES NANOSIZE RUTILE NANOPARTICLES DEPOSITION OXIDATION MICELLES TITANIA SYSTEMS Chemistry, Multidisciplinary Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter
中文摘要	Porosity-controllable TiO2 nanocrystallines with pure anatase phase have been synthesized through a salt-leaching assisted sol-gel method, where glycerol was used as the dispersant to disperse the inorganic precursor (tetrabutyl titanate, TBT) and the chelating ligand to attenuate the hydrolysis/condensation reaction kinetics, while the salts (NaCl) were used as porosity-induced agents to produce pores in the final titania products when the salts leached out. The porosities and surface areas of obtained titania samples could be adjusted by altering the NaCl concentration in the precursor sol, which was examined by experimental techniques such as XRD, TEM and Brunauer-Emmett-Teller (BET) nitrogen adsorption-desorption. In addition, their photocurrent actions and photocatalytic abilities were also investigated so as to address the relationship between the nanostructures and their photoelectrochemical properties. It was demonstrated that the obtained titania samples exhibited different photocurrent actions and photocatalytic activities due to their different morphologies, particle sizes, surface areas as well as pore architectures. Therefore, the salt-leaching assisted sol-gel method described herein offers a new effective and facile strategy for the preparation of pure anatase TiO2 nanocrystallines with adjustable porosity, as well as provides the titania products with specific photoelectrochemical properties for applications in a variety of areas such as photovoltaic cells, photocatalysis and so on.
语种	英语 ; 英语
出版者	AMER SCIENTIFIC PUBLISHERS ; STEVENSON RANCH ; 25650 NORTH LEWIS WAY, STEVENSON RANCH, CA 91381-1439 USA
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/80785]
专题	清华大学
推荐引用方式 GB/T 7714	Chen, Da,Wang, Geng,Zhang, Hao,et al. Synthesis of Nanocrystalline TiO2 by a Salt-Leaching Assisted Sol-Gel Method and Their Photoelectrochemical Properties[J],2010, 2010.
APA	Chen, Da,Wang, Geng,Zhang, Hao,&Li, Jinghong.(2010).Synthesis of Nanocrystalline TiO2 by a Salt-Leaching Assisted Sol-Gel Method and Their Photoelectrochemical Properties..
MLA	Chen, Da,et al."Synthesis of Nanocrystalline TiO2 by a Salt-Leaching Assisted Sol-Gel Method and Their Photoelectrochemical Properties".(2010).

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