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Vol. 26 No. 6 (2014): Vol 26 Issue 6

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Effect of pH on the Microstructural Morphology and Phase Transformation of TiO2 Nanopowders Prepared by Sol-Gel Method

https://doi.org/10.14233/ajchem.2014.15831A
Chang Sung Lim
Department of Advanced Materials Science & Engineering, Hanseo University, Seosan 356-706, Republic of Korea

Corresponding Author(s) : Chang Sung Lim

cslim@hanseo.ac.kr

Asian Journal of Chemistry, Vol. 26 No. 6 (2014): Vol 26 Issue 6

Abstract

Titanium dioxide nanoparticles were successfully prepared by a sol gel method. The resultant microstructural morphology and phase transformation on the variation pH were investigated. The influence of pH on the reaction morphology of using a titanium tetra-isopropoxide was evaluated depending on the amounts of the catalysts such as HCl and NH4OH. The microstructural morphology and phase transformation of TiO2 particles prepared by the hydrolysis of titanium tetra-isopropoxide were strongly influenced by the presence of the catalysts. The phase transformations of amorphous Ti(OH)4 to anatase TiO2 and the anatase to rutile were significantly influenced by the type and the amount of the catalysts.

Keywords

TiO2 nanoparticles Sol-gel method pH Microstructural morphology and phase transformation
Sung Lim, C. (2014). Effect of pH on the Microstructural Morphology and Phase Transformation of TiO2 Nanopowders Prepared by Sol-Gel Method. Asian Journal of Chemistry, 26(6), 1843–1847. https://doi.org/10.14233/ajchem.2014.15831A
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