Title :
One-step synthesis and characterization of highly-ordered titanium dioxide Nanotubes
Author :
Martin, J. ; Hirsch, S.G. ; Giri, A. ; Griep, Mark H. ; Karna, Shashi P.
Author_Institution :
ATTN: RDRL-WM, US Army Res. Lab., Aberdeen Proving Ground, MD, USA
Abstract :
Highly-ordered, densely-packed, hexagonal TiO2 nanotubes were synthesized in a single-step anodization of Ti foil using a constant dc potential of 60 V. The synthesized nanotubes exhibit a bamboo-like structure, with rings formed along the length. X-ray diffraction reveals the as-grown nanotubes to be amorphous, which upon annealing at 723 K changes to a dominantly crystalline anatase phase. A high concentration of the electrolyte coupled with a mechanically uneven Ti surface leads to “nano-grass” like structure. A long anodization time also contributes to rapid breakdown of the Nanotubes.
Keywords :
X-ray diffraction; amorphous semiconductors; annealing; anodisation; crystallisation; electrolytes; foils; nanofabrication; semiconductor growth; semiconductor nanotubes; titanium; titanium compounds; Ti; TiO2; X-ray diffraction; amorphous nanotubes; annealing; bamboo-like structure; constant dc potential; crystalline anatase phase; densely-packed nanotubes; electrolyte concentration; hexagonal nanotubes; highly-ordered titanium dioxide nanotubes; nanograss like structure; one-step synthesis; single-step anodization; temperature 723 K; titanium foil; voltage 60 V; Electrodes; Electron tubes; Nanotubes; Photovoltaic cells; Scanning electron microscopy; Surface treatment; Titanium; Titania nanotubes; anatase; nanotubes; titanium dioxide;
Conference_Titel :
Nanotechnology (IEEE-NANO), 2012 12th IEEE Conference on
Conference_Location :
Birmingham
Print_ISBN :
978-1-4673-2198-3
DOI :
10.1109/NANO.2012.6322014
