Sustained production of H2O2 on irradiated TiO2- fluoride systems |
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| Authors: | Maurino Valter Minero Claudio Mariella Giuseppe Pelizzetti Ezio |
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| Affiliation: | Dipartimento di Chimica Analitica - Università di Torino and NIS, Nanostructured Interfaces and Surfaces Centre of Excellence, Via P. Giuria 5, 10125, Torino, Italy. valter.maurino@unito.it |
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| Abstract: | UV irradiation of fluorinated TiO(2) suspensions in water, in the presence of oxygen and a hole scavenger, leads to the production of H(2)O(2) with steady state concentration levels up to 1.3 millimolar; the H(2)O(2) formation rate follows the TiO(2) surface speciation, being maximum when the surface is completely covered by [triple bond]Ti-F groups; these results outline the importance of surface speciation on the photocatalytic process. |
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