Effect of the solvent on growth of titania nanotubes prepared by anodization of Ti in HCl

Fathy M.B. Hassan, Hiroshi Nanjo, Shanmugam Venkatachalam, Mitsuhiro Kanakubo, Takeo Ebina

Research output: Contribution to journalArticlepeer-review

31 Citations (Scopus)

Abstract

The effect of the solvent on the anodic growth of titania nanotubes in HCl dissolved in water, ethylene glycol and 2-propanol was studied. These nanotubes grow with locally rapid breakdown of the passive TiO2 film forming a forest of nanotubes-bearing microtowers with the background of passive TiO2 Film. These bundles of assembled-groups of titania nanotubes look like Pillars corals. The low relative permittivity of the 2-propanol led to lowering of dissociation of HCl and hence lowering the activity of H+ and Cl- ions which in turn led to suppress of dissolution of titania and increasing the growth rate of the titania nanotubes. The X-ray diffraction pattern showed that the titania nanotubes after annealing change to the crystalline anatase phase. The anodic films showed characteristic coloration with intensity and color that changes (qualitatively) with time of anodization.

Original languageEnglish
Pages (from-to)3130-3137
Number of pages8
JournalElectrochimica Acta
Volume55
Issue number9
DOIs
Publication statusPublished - Mar 30 2010
Externally publishedYes

Keywords

  • Anodic oxidation
  • Electrochemical dissolution
  • HCl
  • Porous oxid
  • Titanium oxide

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Electrochemistry

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