Nanostructured TiO(2) - morphological and structural changes

Chemical modification of titanium to form TiO(2) is being extensively pursued. We compare the influence of acid pickling and post processing on the crystallinity and morphology of TiO(2) grown by H(2)O(2) oxidation. Subsequent oxidation using two concentrations of H(2)O(2) (15% and 30% by mass) indicates a variation in the fine surface morphology, apparent at low magnifications. No discernable difference in the quality of TiO(2) that was produced when evaluated by SEM, Raman or XRD (glancing angle and q:2q) could be detected between the samples oxidised in different H(2)O(2) concentrations. The photoactivity of TiO(2) produced from ultra thin Ti films was confirmed by the photocatalytic reduction of Ag(+) cations to Ag(0).