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Issue 12, 1999
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Two competitive primary processes in the photodegradation of cationic triarylmethane dyes under visible irradiation in TiO2 dispersions

Abstract

The photocatalytic degradation of two cationic triarylmethane dyes, crystal violet (CV) and fuchsin basic (FB), was examined in aqueous TiO2 suspensions under visible light irradiation. The techniques of 1HNMR, UV-Vis and EPR have been used to identify the photodecomposed products and intermediates and to demonstrate the photocatalytic mechanism of the dye on the semiconductor surface. The degradation undergoes a competitive primary process between demethylation and decomposition of the whole conjugated structure.

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Article type: Paper
DOI: 10.1039/A906765E
New J. Chem., 1999,23, 1193-1196

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    Two competitive primary processes in the photodegradation of cationic triarylmethane dyes under visible irradiation in TiO2 dispersions

    X. Li,, G. Liu and J. Zhao, New J. Chem., 1999, 23, 1193
    DOI: 10.1039/A906765E

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