title: Direct detection of OH radicals diffused to the gas phase from the UV-irradiated photocatalytic TiO2 surfaces by means of laser-induced fluorescence spectroscopy.
abstract: The important roles of OH radicals for remote oxidation using TiO(2) photocatalysts were evidenced by the in situ detection of OH radicals in the gas phase using the laser-induced fluorescence (LIF) technique. The appearance of OD-LIF intensities after the exposure of D(2)O vapors over TiO(2) powders and the decrease of the time-resolved signals of OH-LIF intensities with increasing calcined temperatures of TiO(2) powders suggested that the exchangeable water at the TiO(2) surface is the origin of the diffused OH radicals.
authors.forename: Yoshinori
authors.initials: Y
authors.lastname: Murakami
authors.forename: Endo
authors.initials: E
authors.lastname: Kenji
authors.forename: Atsuko Y
authors.initials: AY
authors.lastname: Nosaka
authors.forename: Yoshio
authors.initials: Y
authors.lastname: Nosaka