Chemistry Letters,(4)[383-384], (1997)

Application of Chemiluminescent Probe to the Characterization of TiO₂ Photocatalysts in Aqueous Suspension.

NOSAKA,Y. and FUKUYAMA, H,

(Abstract)
A chemiluminescent probe, luminol, has been effectively applied to monitor the behavior of superoxide ions (O₂^.-) at photocatalytic reactions in aerated aqueous suspension of various commercially available TiO₂ powders. By the addition of halide ions, the amount of O₂^.- increased or decreased depending on the properties of TiO₂ powders. This difference is discussed with the difference in the mechanism of recombination via O₂^.- for the photoinduced electron-hole pairs


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