Template-Assisted Sol-Gel Synthesis of Nanocrystalline BaTiO3

Anuradha, TV (2010) Template-Assisted Sol-Gel Synthesis of Nanocrystalline BaTiO3. In: E-Journal of Chemistry, 7 (3). pp. 894-898.

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Abstract

Nanocrystalline perovskite barium titanate with an average particle size less than similar to 10 nm is produced using sol-gel route involving ligand-assisted templating. BaTiO3 is obtained by the controlled hydrolysis and condensation reaction of barium acetate (Ba(CH3COO)(2)) with titanium tetra chloride (TiCl4) in the reverse micelles of dodecylamine (DDA) which is used as the template. Our attempts to produce mesoporous BaTiO3 have resulted in the formation of nanocrystalline BaTiO3. The synthesis of nanostructured BaTiO3 is carried out using the ligand-assisted templating approach which proceeds through the sol-gel route. Dodecylamine is used as the template. The sol-gel process in general presents inherent advantages because the nanostructure of the desired materials can be controlled together with their porous structure. Ligand-assisted templating approach involves the formation of covalent bond between the inorganic analogue and the template. Ba(CH3COO)(2) and TiCl4 are used as barium-source and titanium-source respectively. The reaction between Ba(CH3COO)(2) and TiCl4 is found to take place deliberately on the pre-assembled species which acts as the template or occurring with in them which in turn will lead to the generation of the desired nanoscale structure (nanopores or nanoparticles).

Item Type:	Journal Article
Publication:	E-Journal of Chemistry
Publisher:	WWW Publ pte
Additional Information:	Copyright of this article belongs to WWW Publ pte.
Keywords:	Ligand-assisted templating; Ba(CH3COO)(2), TiCl4, Dodecylamine; XRD, TEM
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	29 Dec 2010 08:12
Last Modified:	29 Dec 2010 08:12
URI:	http://eprints.iisc.ac.in/id/eprint/28982

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