X-ray absorption fine structure combined with x-ray fluorescence spectrometry Part 15: Monitoring of vanadium site transformations on titania and in mesoporous titania by selective detection of the vanadium Kalpha1 fluorescence

Article Abstract:

The application of X-ray absorption fine structure with X-ray fluorescence spectrometry to various V + TiO2 hybrid samples is discussed. Spectra of extremely high signal/background (S/B) ratio was obtained due to the selective detection of V K alpha1 fluorescence associated with the V K-edge absorption with energy resolution of 0.4 eV.

Electric properties, Titanium compounds

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Sintering and phase transformation of V-loaded anatase materials containing bulk and surface V species

Article Abstract:

V-loaded anatase materials with V/Ti molar ratios in the range 0.02-0.06 have been prepared by a sole gel procedure under inert atmosphere. The decrease in the threshold temperature at which V-loaded anatase materials are transformed into rutile, has been observed.

Analysis, Phase transformations (Statistical physics), Phase transitions (Physics), Titanium dioxide, Thermal properties

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Reply to the comment on "photoluminescence study of the introduction of V in Si-MCM-41: Role of surface defects and their associated SiO(super -) and SiOH groups."

Article Abstract:

The explanation regarding mistakes in the photoluminescence study of the introduction of V in Si-MCM-41 is discussed. The use of averaged frequencies of the higher transitions modes is considered inappropriate due to the anharmonicity of the potential.

Science & research, All Other Basic Inorganic Chemical Manufacturing, Industrial inorganic chemicals, not elsewhere classified, Silicon, Research, Usage, Photoluminescence, Properties

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