Specific sample configuration for studying photogenerated electron transfer at the semiconductor/water interface by Electron Paramagnetic Resonance
Résumé
Photogeneration of electrons from amorphous phase and anatase phase thin films of titanium oxide in contact with water was monitored by Electron Paramagnetic Resonance. The semiconducting oxide thin films were deposited on glass fibers of 250 µm diameter by Reactive Magnetron Sputtering and were centered inside capillaries of ca. 1 mm diameter filled with aqueous solution of a paramagnetic probe molecule. This proof of concept, non-restrictive to titanium oxide, makes it possible to reuse of the same fiber for multiple measurements and, as it respects the cylindrical symmetry, it should provide mechanistic investigations with reliable and quantifiable data on photogenerated electron transfer at the semiconductor/water interface.
Domaines
Physique [physics]| Origine | Fichiers produits par l'(les) auteur(s) |
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