Role of water content in anodization of titanium to fabricate TiO2 nanotubes and its properties

Author

Nishanthi, S.T. ; Iyyapushpam, S. ; Padiyan, D. Pathinettam

Author_Institution

Dept. of Phys., Manonmaniam Sundaranar Univ., Tirunelveli, India

fYear

2013

fDate

24-26 July 2013

Firstpage

320

Lastpage

323

Abstract

The effect of water content in anodization of Ti foil on photoelectrochemical activity of TiO₂ nanotubes fabricated were studied and optimized. The mixed phase of TiO₂ was confirmed from X-ray diffraction and their morphological changes with respect to increase in water content were analyzed using High Resolution Scanning Electron Microscope. The optical band gap of TiO₂ can be effectively tuned from 3.023(2) to 2.601(7) eV by varying the water content in anodization. The maximum photocurrent density of 2.5 mA/cm² was observed for the TiO₂ sample with higher crystallinity. These results suggest that the higher crystallinity with ordered nanotubes and lesser band gap act as a key role in improving the photoelectrochemical activity of TiO₂.

Keywords

X-ray diffraction; anodisation; energy gap; nanofabrication; nanotubes; optical constants; photoelectrochemistry; scanning electron microscopy; surface morphology; titanium; titanium compounds; Ti; TiO₂; TiO₂ nanotube fabrication; X-ray diffraction; crystallinity; high resolution scanning electron microscope; optical band gap; photocurrent density; photoelectrochemical activity; titanium anodization; water content; Humidity; Hydrogen; Photonic band gap; Thickness measurement; TiO2 nanotubes; anodization; band gap; ethylene glycol; water content;

fLanguage

English

Publisher

ieee

Conference_Titel

Advanced Nanomaterials and Emerging Engineering Technologies (ICANMEET), 2013 International Conference on

Conference_Location

Chennai

Print_ISBN

978-1-4799-1377-0

Type

conf

DOI

10.1109/ICANMEET.2013.6609302

Filename

6609302