Substituted titanium dioxide (rutile) compounds were synthesized in sealed silica tubes using chemical vapor transport. Single substitutions, Ti1-xMxO2, of titanium with Group VA and VIA metals, and multiple substitutions with tantalum, niobium, tungsten, molybdenum, vanadium, chromium, cobalt and iron with stoichiometries Ti1-x-yAxByO2 (with x, y = 0.3) were made. The resulting materials were characterized by powder X-ray diffraction, X-ray fluorescence and by resistivity measurements. Many of the substituted oxides maintained the rutile structure as confirmed by X-ray diffraction, had low electrical resistivity, and were stable in acid solutions. A portable X-ray fluorescence instrument was used to help confirm the stoichiometries of the compounds. Stable, electrically conducting materials are useful for a wide variety of applications such as cathode supports in fuel cells.

Synthesis and characterization of new doubly-substituted titanium dioxide (rutile) compounds using chemical vapor transport

241st National Meeting (2011)

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