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Morphology tuning in nontemplated solvothermal synthesis of titania nanoparticles

Published online by Cambridge University Press:  01 May 2006

Xin M. Wang  and
Ping Xiao
Xin M. Wang
Affiliation:
Materials Science Centre, School of Materials, University of Manchester, Manchester M1 7HS, United Kingdom
Ping Xiao*
Affiliation:
Materials Science Centre, School of Materials, University of Manchester, Manchester M1 7HS, United Kingdom
*
a) Address all correspondence to this author. e-mail: [email protected]
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Abstract

Nanoparticles and nanocrystalline particles of pure anatase titania (TiO2) were synthesized by solvothermal processing of TiCl4 ethanol and isopropanol solutions at 120 to 200 °C. This one-step and nonsurfactant approach is versatile and the morphology tuning can be achieved by manipulating the growth kinetics. Dispersed nanocrystals of spherical, cubic, and acicular shapes and hollow spherical and core-shell structured micrometer-sized particles were obtained under different experimental conditions. The obtained hollow spherical- and core-shell–structured particles have an average diameter of 700 nm to 1.0 μm, with an average crystallite size of 5 to 16 nm. The dependence of nucleation/crystal growth and morphology development on solvothermal medium, reaction temperature, and reactant concentration was investigated. The reaction mechanism was then suggested and tentatively discussed from coordination and solution chemistry.

Keywords

Chemical synthesisCore/shellHydrothermal
Type
Articles
Information
Journal of Materials Research , Volume 21 , Issue 5 , May 2006 , pp. 1189 - 1203
Copyright
Copyright © Materials Research Society 2006

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