A Two-Step Hydrothermal Method for Preparing Titania Nanostructure with High Surface Area

Author

Lorturn, P. ; Viriya Empikul, N. ; Soottitantawat, A. ; Tumcharern, G. ; Tanthapanichakoon, W. ; Charinpanitkul, T.

Author_Institution

Center of Excellence in Particle Technol., Chulalongkorn Univ., Bangkok

fYear

2008

fDate

18-21 Aug. 2008

Firstpage

775

Lastpage

777

Abstract

Anatase titania with high surface area and distinctive morphology was prepared by a two- step hydrothermal method. In the first step, titanate nanotubes (TNTs) were produced from hydrothermal treatment of rutile titania in NaOH solution. Then the TNTs were hydrothermally treated in de-ionized water and transformed to rice-shaped anatase titania with specific surface area of ca. 80 m²/g. Based on microscopic analysis, the reaction-assisted phase transformation could be attributed to crystallization of the agglomerated amorphous TNTs in the presence of water molecule.

Keywords

amorphous semiconductors; crystal growth from solution; crystallisation; nanotechnology; semiconductor nanotubes; titanium compounds; NaOH solution; TiO₂; amorphous TNT; crystallization; hydrothermal method; microscopic analysis; phase transformation; rutile titania; surface area; titanate nanotubes; titania nanostructure preparation; water molecule; Crystallization; Decision support systems; Fabrication; Nanotubes; Scanning electron microscopy; Surface morphology; Surface treatment; Temperature; Titanium compounds; Water pollution;

fLanguage

English

Publisher

ieee

Conference_Titel

Nanotechnology, 2008. NANO '08. 8th IEEE Conference on

Conference_Location

Arlington, TX

Print_ISBN

978-1-4244-2103-9

Electronic_ISBN

978-1-4244-2104-6

Type

conf

DOI

10.1109/NANO.2008.231

Filename

4617213