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Preparation of Highly Crystalline TiO2 Nanostructures by Acid-assisted Hydrothermal Treatment of Hexagonal-structured Nanocrystalline Titania/Cetyltrimethyammonium Bromide Nanoskeleton

Dai, Shuxi and Wu, Yanqiang and Sakai, Toshio and Du, Zuliang and Sakai, Hideki and Abe, Masahiko (2010) Preparation of Highly Crystalline TiO2 Nanostructures by Acid-assisted Hydrothermal Treatment of Hexagonal-structured Nanocrystalline Titania/Cetyltrimethyammonium Bromide Nanoskeleton. Nanoscale Research Letters, 5 (11). pp. 1829-1835.

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Abstract

Highly crystalline TiO2 nanostructures were prepared through a facile inorganic acid-assisted hydro- thermal treatment of hexagonal-structured assemblies of nanocrystalline titiania templated by cetyltrimethylammo-nium bromide (Hex-ncTiO2/CTAB Nanoskeleton) as start-ing materials. All samples were characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM). The influence of hydrochloric acid concentration on the morphology, crystalline and the formation of the nano-structures were investigated.We found that the morphology and crystalline phase strongly depended on the hydrochloric acid concentrations. More importantly, crystalline phase was closely related to the morphology of TiO2 nanostruc-ture. Nanoparticles were polycrystalline anatase phase, and aligned nanorods were single crystalline rutile phase. Pos-sible formation mechanisms of TiO2 nanostructures with various crystalline phases and morphologies were proposed.

Item Type:Article
Subjects:Material Science > Nanochemistry
ID Code:9825
Deposited By:CSMNT
Deposited On:06 Jun 2011 08:09
Last Modified:06 Jun 2011 08:09

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