Application of Chemiluminescent Probe to the Characterization of TiO2 Photocatalysts in Aqueous Suspension
- 1 April 1997
- journal article
- research article
- Published by Oxford University Press (OUP) in Chemistry Letters
- Vol. 26 (4) , 383-384
- https://doi.org/10.1246/cl.1997.383
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.Keywords
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