Title :
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
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;
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
DOI :
10.1109/NANO.2008.231
