Quantitative characterization of hydroxyl radicals produced by various photocatalysts.

  title={Quantitative characterization of hydroxyl radicals produced by various photocatalysts.},
  author={Quanjun Xiang and Jiaguo Yu and Po Keung Wong},
  journal={Journal of colloid and interface science},
  volume={357 1},
Hydroxyl radicals ((·)OH) have been deemed to be the major active species during the photocatalytic oxidation reaction. In this study, (·)OH produced on various semiconductor photocatalysts in aqueous solution under Xenon lamp irradiation was quantitatively investigated by the photoluminescence (PL) technique using coumarin (COU) as a probe molecule. The results indicated that the formation rate of (·)OH on the surface of irradiated commercial Degussa P25 (P25) was much higher than that of… CONTINUE READING
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