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Chem. Commun., 2005, 2627 - 2629, DOI: 10.1039/b418789j

Sustained production of H2O2 on irradiated TiO2– fluoride systems

Valter Maurino, Claudio Minero, Giuseppe Mariella and Ezio Pelizzetti

UV irradiation of fluorinated TiO2 suspensions in water, in the presence of oxygen and a hole scavenger, leads to the production of H2O2 with steady state concentration levels up to 1.3 millimolar; the H2O2 formation rate follows the TiO2 surface speciation, being maximum when the surface is completely covered by Ti–F groups; these results outline the importance of surface speciation on the photocatalytic process.

Graphical abstract image for this article (ID: b418789j)