14_05/2008Cover Picture: Probing Defect Sites on TiO2 with [Re3(CO)12H3]: Spectroscopic Characterization of the Surface Species (Chem. Eur. J. 5/2008)

Defect sites on the TiO2 (anatase) surface and their formation were modeled on the basis of EPR and IR spectra. In their Full Paper on page 1402 ff., B. C. Gates et al. describe how the sites incorporate Ti3+ with O2− and O− and are marked by their OH groups. They were investigated with a novel probe molecule, [Re3(CO)12H3], which reacts preferentially with Ti3+ defect sites, becoming deprotonated, removing most of the oxygen radicals, and healing the defects.

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