Environmental Photochemistry on Semiconductor Surfaces:  Photosensitized Degradation of a Textile Azo Dye, Acid Orange 7, on TiO<sub>2</sub> Particles Using Visible Light

Vinodgopal, K.; E. Wynkoop, Darrel; V. Kamat, Prashant

doi:10.1021/es950655d

Public

Environmental Photochemistry on Semiconductor Surfaces: Photosensitized Degradation of a Textile Azo Dye, Acid Orange 7, on TiO2 Particles Using Visible Light

Published in Environmental Science & Technology • Apr 1, 1996

Authors:

K. Vinodgopal

Darrel E. Wynkoop

Prashant V. Kamat

Abstract

Photosensitized degradation of a textile azo dye, Acid Orange 7, has been carried out on TiO 2 particles using visible light. Mechanistic details of the dye degradation have been elucidated using diffuse reflectance absorption and FTIR techniques. Degradation does not occur on Al 2 O 3 surface or in...

Subject

Photochemistry

Visible spectrum

Chemistry

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