Titanium oxide films

The titanium oxide film consists of mtile or anatase (31) and is typically 250-A thick. It is insoluble, repairable, and nonporous in many chemical media and provides excellent corrosion resistance. The oxide is fully stable in aqueous environments over a range of pH, from highly oxidizing to mildly reducing. However, when this oxide film is broken, the corrosion rate is very rapid. Usually the presence of a small amount of water is sufficient to repair the damaged oxide film. In a seawater solution, this film is maintained in the passive region from ca 0.2 to 10 V versus the saturated calomel electrode (32,33). 

Platinised-titanium anodes may also be used in soils when surrounded by a carbonaceous backfill. Warne and Berkeley " have investigated the performance of platinised-titanium anodes in carbonaceous backfills and conclude that the anodes may be successfully operated in this environment at a current density of up to 200 AmThis also supplements the findings of Lewis, who states that platinised-titanium anodes may be used in carbonaceous backfill without breakdown of the titanium oxide film. Success with platinised-titanium anodes has been reported with anodes operating at a few tens of Am and failures of anodes have often been attributed to operation at high current densities . 

The above results on detection of trace concentrations of oxygen by sine oxide films (and titanium oxide films, to a lesser degree), as well as the results on detection of alkyl radicals, which are acceptors of semiconductor electrons, show that the behaviour and electric properties of... 

Marino GEB, Nascente PAP, Biaggio SR, Rocha-Pilho RG, Bocchi N (2004) XPS characterization of anodic titanium oxide films grown in phosphate buffer solutions. Thin Solid Pilms 468 109-112... 

Recently a low-cost, high efficiency (about 12 per cent in diffuse daylight) photovoltaic cell based on dye-sensitized colloidal titanium oxide films with a conducting glass auxiliary electrode was described71. 

Hsu, S. W., Yang, T. S., Chen, T. K. and Wong, M. S. (2007). Ion-assisted electron-beam evaporation of carbon-doped titanium oxide films as visible-light photocatalyst. Thin Solid Films 515(7-8), 3521-3526. 

Figure 7 shows the HREELS spectrum acquired at room temperature and at an incidence angle of 60° from the surface normal for a 30 MLE titanium oxide film prepared as described above. Fundamental phonons of 54meV(v2) as well as overtone losses and combinations are seen. The loss at 149 meV is due to v + V2, and the loss at 245 meV is due to v + 2v2. That Ti02 films prepared in this manner are anatase and can be ruled out because the anatase phase exhibits fundamental surface phonons at 44 and 98meV for the (100) face and 48 and 92meV for the (001) face. The combined use of FEED, AES, XPS, and HREELS has revealed that the thin Ti02 films prepared via the above procedure are rutile with a surface structural orientation primarily (100). 

Figure 5 AE spectra (a) Mo(llO) surface prior to film growth (b) 30ML titanium oxide film on Mo(llO). The primary energy was 3keV the spectra were collected at 100 K. (From Ref. 48.)... 

Figure 7.7. Influence of the incident X-ray beam s incidence angle on the dijfraction pattern of a sample comprised of a titanium oxide film and a zirconia film, deposited on a sapphire substrate...

The noncrystalline titanium oxide films were prepared from titanium tetraisopropylate while maintaining an oxygen discharge. Since titanium oxide is not a common glass-forming system, one may inquire whether the viscosity of such a film would be similar to that of glass near its transition region—i.e., 101 ,-1014 poises. For many undercooled systems,... 

Nemanich, R. J., Tsai, C. C., and Connell, G.A.N. Interference-Enhanced Raman Scattering of Very Thin Titanium and Titanium Oxide Films. Phys. Rev. Lett. 44(4) 273-276 (1980)... 

Zhang, F., Wang, W., Li, C., Wang, H., Chen, L., and Liu, X., Rutile type titanium oxide films synthesized by filtered arc deposition. Surf. Coat. Tech., 110, 136-139, 1998. 

Wan L, Li J, Feng J, Sim F, Mao Z. Improved optical response and photocatalysis for N-doped titanium oxide films prepared by oxidation of TiN. Appl Surf Sci 2007 253 4764-7. 

Basame, S.B. and White, H.S. (1995) Scanning electrochemical microscopy of native titanium-oxide films - mapping the potential dependence of spatially-localized electrochemical reactions. Journal of Physical Chemistry, 99,16430-16435. 

YETO (3dtrium-erbium-titanium oxide films), 303... 

Martinez-Ferrero, E., D. Grosso, C. Boissiere, C. Sanchez, O. Oms, D. Leclercq, A. Vioux, F. Miomandre, and Audebert, P., 2006. Electrochemical investigations into ferrocenylphosphonic acid functionahzed mesostructured porous nanocrystaUine titanium oxide films. J Mater Chem 16 3762-67. 

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