TiO2 Titanium oxide

To explore the possibility of electronic Interaction between the reduced titanium oxide and Pt, 1 ML of Pt was deposited on both fully oxidized and partially reduced T102. The reduced sample was prepared by Ar" " sputtering of the TIO2 substrate prior to metal deposition. Introducing reduced Tl centers at the Pt-Tl Interface. 

Onishi, H., Fukui, K. and Iwasawa, Y. (1995) Atomic-scale surface structures of TiO2(110) determined by scanning tunneling microscopy A new surface-limited phase of titanium oxide. Bull. Chem. Soc. Jpn., 68, 2447—2458. 

In mixtures of nonpolar solvents with little water, surfactants form spherical reverse micelles. They have a reversed orientation of the molecules with the hydrophilic groups in the interior and a drop of enclosed water in the middle. Starting from a precursor material, metal oxides in the form of uniform nanosized spheres can be obtained by hydrolysis under controlled conditions (pH, concentration, temperature). For example, titanium oxide spheres are obtained from a titanium alkoxide, Ti(OR)4 -1- 2 HjO -> TiO2 + 4 ROH. 

Figure 7 HREELS spectra at room temperature (a) titanium oxide film with 30MLE thickness on Mo(llO) (b) TiO2(110) single crystal. Ep = 4.7 eV. (From Ref. 48.)... 

It is well-known that anatase transforms irreversibly to rutile at elevated temperatures [70]. Normally, the phase transformation temperature in air from anatase to rutile titanium oxide is between 600°C and 750°C [71]. From an applicable viewpoint of anatase titanium oxide into a variety of fields, it is deeply desirable to develop thermally stable anatase titanium oxide composites without the phase transformation to mtile under such higher temperature conditions. We have very recently found that fluoroalkyl end-capped vinyltrimethoxysilane oligomer/anatase titanium oxide nanocomposites [Rp—(VM—Si02) —RF/0 -TiO2] can keep completely its... 

The tltanla-based thin film catalyst models were constructed by first oxidizing the titanium surface In 5 x 10 torr of O2 for approximately 30 minutes at 775 K. This produced an AES llneshape consistent with fully oxidized TIO2. The metal was then vapor deposited onto the oxide support with the latter held at 130 K. The thickness of the metal overlayer and Its cleanliness were verified by AES. After various annealing and adsorption procedures, these thin films were further characterized using SSIMS, AES and TDS. For comparison, some work was done with Pt on Al20s. In this case a Mo foil covered with AI2O3 replaced the Tl(OOOl) substrate. 

Materials. The titanium dioxide powders were rutile in structure (obtained from the Titanium Division, National Lead Co., Amboy, N. J.), with nominal specific surface areas of 10 and of 100 sq. meters per gram. Chemical analysis by the supplier showed negligible impurities except for 0.8% sodium oxide in the Ti02-100 and traces of iron in both the TiO2-10 and the TiO2-100. The presence of iron was confirmed by the nature of the decay of the neutron irradiation—induced radioactivities. 

Catalytic reactions on a metal oxide single crystal switchover of the reaction paths in formic acid decomposition on titanium dioxide TiO2(110). J. Am. Chem. Soc., 115, 10460-10461. 

Titanium(iv) forms precipitates containing various amounts of water. Calcined TiO2 often has an O Ti atomic ratio slightly lower than 2. PZCs/IEPs of titanium (hydr)oxides are presented in Tables 3.957 through 3.1091. 

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