AVS 60th International Symposium and Exhibition
    Nanometer-scale Science and Technology Tuesday Sessions
       Session NS+AS+EN+SS-TuA

Paper NS+AS+EN+SS-TuA11
Selective Growth of TiO2 Nanotubes on Titanium Foil by Two Step Anodization Method

Tuesday, October 29, 2013, 5:20 pm, Room 203 B

Session: Nanoscale Catalysis and Surface Chemistry
Presenter: Z. Razavi Hesabi, Georgia Institute of Technology
Authors: Z. Razavi Hesabi, Georgia Institute of Technology
N. Semenikhin, Georgia Institute of Technology
A. Bonecutter, Georgia Institute of Technology
F. Alamgir, Georgia Institute of Technology
E.M. Vogel, Georgia Institute of Technology
N.K. Allam, The American University in Cairo, Egypt
Correspondent: Click to Email
One dimensional nanostructures such as nanotubes exhibit unique properties because of their special geometry, high surface area and high aspect ratio paving the way for transferring ions, electrons, photons, gases, and fluids. The photoactivity of TiO2 nanotubes (TNTs) makes them promising candidates for use in solar cells, water splitting, sensors, tissue engineering, and drug delivery. Among different synthesis methods, particular interest has been given to the anodic growth of TiO2 nanotubes on Ti foil as it leads to the formation of an array of closely packed vertically aligned tubes. However, in many applications such as MEMS and NEMS, it is desired to have TiO2 nanotubes with a desired pattern on substrate of interest. Pittrof et al. [1] patterned grown TiO2 nanotubes after the nanotube layer has been created. Recently, Chappanda et al. [2] deposited Ti on silicon substrate and grew patterned TiO2 nanotubes. Selective growth of TiO2 nanotubes on titanium foil has not ever been reported. In the preset study, TiO2 nanotubes were grown selectively on patterned titanium foil by anodization at room temperature. Conventional photolithography as well as laser patterning of scotch tape were used to copy desirable pattern on titanium foil. Anodization was done in an organic electrolyte containing ammonium fluoride for 5 to 60 minutes. SEM images show successful growth of TiO2 nanotubes in open areas.

1. A. Pittrof et al., Acta Biomaterialia 7 (2011)

2. K. N. Chappanda et al., Nanotechnology 23 (2012)