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http://dx.doi.org/10.12925/jkocs.2010.27.4.14

$TiO_2$ Nanotubes Preparation and Its Formation Mechanism  

Kang, Young-Gu (Department of Chemical Engineering, Myongji University)
Shin, Ki-Seok (Department of Chemical Engineering, Myongji University)
Ahn, Sung-Hwan (Department of Chemical Engineering, Myongji University)
Hahm, Hyun-Sik (Department of Chemical Engineering, Myongji University)
Publication Information
Journal of the Korean Applied Science and Technology / v.27, no.4, 2010 , pp. 487-493 More about this Journal
Abstract
There has been a controversy on the formation mechanism of $TiO_2$ nanotubes. This study was conducted to elucidate the formation mechanism of $TiO_2$ nanotubes. $TiO_2$ nanotubes were prepared by a hydrothermal method. $TiO_2$ nanotubes formation mechanism was investigated by controlling the formation time. It was found that $TiO_2$ nanotubes were formed by growing, not by wrapping of sheets. The phase structure of hydrogen titanate nanotubes was different from that of $TiO_2$ nanotubes. It is important to wash the sodium titanate nanotubes with an acidic solution to get hydrogen titanate nanotubes and then to calcine the hydrogen titanate nanotubes around $400^{\circ}C$ to obtain $TiO_2$ nanotubes.
Keywords
$TiO_2$ nanotubes, titanate nanotubes; $TiO_2$ nanotubes formation mechanism; hydrothermal method;
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