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Photochemical Degradation of Aqueous Solutions of Organic Dyes under Exposure to Vacuum Ultraviolet Radiation

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Abstract

A xenon excimer silent-discharge lamp of original design intended for use in photochemical processes is described. The wavelength of excited xenon excimers is 172 nm with a full width at half maximum of 16 nm. The operating efficiency of the lamp was demonstrated using the decolorization of aqueous solutions of the azo dye Acid Yellow 99 as an example. The photodegradation kinetics of the dye obeys an exponential law, as determined by measuring color decay at νmax1 = 22 000 cm–1, and depends on the interaction of dye molecules with OH· radicals.

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Authors and Affiliations

  1. Frumkin Institute of Electrochemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow, 117071, Russia

    G. M. Zimina, A. L. Karasev & A. V. Vannikov

  2. NPP Ekoniks, Leninskii pr. 31, Moscow, 117071, Russia

    N. K. Zaitsev & D. V. Krasnyi

Authors
  1. G. M. Zimina
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  2. N. K. Zaitsev
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  3. D. V. Krasnyi
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  4. A. L. Karasev
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  5. A. V. Vannikov
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Zimina, G.M., Zaitsev, N.K., Krasnyi, D.V. et al. Photochemical Degradation of Aqueous Solutions of Organic Dyes under Exposure to Vacuum Ultraviolet Radiation. High Energy Chemistry 34, 376–379 (2000). https://doi.org/10.1023/A:1026674507431

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