Fabrication of TiO2 Films by Anodisation of Ti-Foils in Oxalic Acid
type: CreativeWork
description: TiO2 thin films were fabricated on titanium substrates by the anodisation method. Different anodisation parameters, such as anodising voltage, electrolyte concentration and anodising time, have been investigated in order to explore their effects on the photocatalytic performance of the films. Regarding the effect of anodisation voltage, GAXRD analysis showed that anatase was the only oxide phase in the samples anodised at voltages from 100 to 200 V (at 10 min for 0.2 M oxalic acid and current density 60 mA / cm^2). Data from Raman showed that anatase was present in all films and its intensity increased with increasing voltage. FESEM images showed that, at anodisation voltages of 10-20 V, a flat layer was formed, which became rougher with increasing voltage in the range 50-100 V. With further increase in the voltage to 120-200 V, increased porosity resulted. Transmission electron microscopy (TEM) confirmed an increase in film thickness with increasing anodisation voltage. The photocatalytic performance showed that the activities increased with increasing anodisation voltage and hence thickness and roughness. With regard to the effect of varying electrolyte concentration, mineralogical analysis showed that anatase was the only phase present in the films (at 10 min for 0.2, 0.4 and 0.6 M oxalic acid at 120 V and current density 60 mA / cm^2). However, there was an increase in the intensity of the Raman anatase peaks with increasing electrolyte concentration, which was confirmed by TEM analysis, which showed that the film thickness increased with increasing electrolyte concentration. FESEM analysis showed that the areal density of the pores and cracks increased with increasing electrolyte concentration. The photocatalytic performance showed that the activities with increasing electrolyte concentration. With regard to the effect of anodising time, GAXRD and Raman analysis showed that anatase was the only phase in all the films fabricated at different anodisation times (5…
abstract: TiO2 thin films were fabricated on titanium substrates by the anodisation method. Different anodisation parameters, such as anodising voltage, electrolyte concentration and anodising time, have been investigated in order to explore their effects on the photocatalytic performance of the films. Regarding the effect of anodisation voltage, GAXRD analysis showed that anatase was the only oxide phase in the samples anodised at voltages from 100 to 200 V (at 10 min for 0.2 M oxalic acid and current density 60 mA / cm^2). Data from Raman showed that anatase was present in all films and its intensity increased with increasing voltage. FESEM images showed that, at anodisation voltages of 10-20 V, a flat layer was formed, which became rougher with increasing voltage in the range 50-100 V. With further increase in the voltage to 120-200 V, increased porosity resulted. Transmission electron microscopy (TEM) confirmed an increase in film thickness with increasing anodisation voltage. The photocatalytic performance showed that the activities increased with increasing anodisation voltage and hence thickness and roughness. With regard to the effect of varying electrolyte concentration, mineralogical analysis showed that anatase was the only phase present in the films (at 10 min for 0.2, 0.4 and 0.6 M oxalic acid at 120 V and current density 60 mA / cm^2). However, there was an increase in the intensity of the Raman anatase peaks with increasing electrolyte concentration, which was confirmed by TEM analysis, which showed that the film thickness increased with increasing electrolyte concentration. FESEM analysis showed that the areal density of the pores and cracks increased with increasing electrolyte concentration. The photocatalytic performance showed that the activities with increasing electrolyte concentration. With regard to the effect of anodising time, GAXRD and Raman analysis showed that anatase was the only phase in all the films fabricated at different anodisation times (5…
author: Albarakati, Sultan
language: EN
keywords: Titanium., Oxalic acid., Anodisation., Titanium dioxide., Anatase., Rutile.
license: https://purl.org/coar/access_right/c_abf2
license: https://creativecommons.org/licenses/by-nc-nd/3.0/au/
date published: 2016
date modified: 2026-07-24T05:32:27Z
provider: University of New South Wales
publisher: Networked Digital Library of Theses and Dissertations
type: WebPage
source organization: UNSW, Sydney

PropertyValue
property ID: Handle
value: http://hdl.handle.net/1959.4/56304

PropertyValue
property ID: DOI
value: 10.26190/unsworks/2995