S K-edge NEXAFSspectra of model systems for SO2 on TiO2 (110): a TDDFT simulation

Literature Information

Publication Date 2008-11-13
DOI 10.1039/B811925B
Impact Factor 3.676
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Abstract

The time dependent density functional theory approach has been employed to simulate the S K edge absorption spectra of model systems for the adsorption of SO2 on TiO2 (110) regular surface, employing cluster models to mimic the rutile surface. The spectra calculated for the adsorbate models are compared with the spectrum of the free SO2 in order to discuss the nature of the adsorbate–substrate interaction in terms of the differences in the core excitation spectra. The comparison with the experimental NEXAFS spectra, measured at different temperatures, is satisfactory at low temperature while it reveals the difficulty of reproducing the complex experimental situations induced by the temperature increase with an adsorption model based on a perfect TiO2 surface.

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Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
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