Research on photosensitivity of benzoquinones and benzoquinoneimines in the sunlight/Fe2+/S2O8 2− system

Research on photosensitivity of benzoquinones and benzoquinoneimines in the sunlight/Fe2+/S2O8... This paper investigated the photodegradation characteristics of benzoquinones and benzoquinoneimines. The photosensitivity of benzoquinones and benzoquinoneimines were analyzed by measuring the yield of SO 4 −· in a light/Fe2+/S2O8 2− system and the degradation mechanism of benzoquinones, then discussed benzoquinoneimines in light/Fe2+/S2O8 2− and light/S2O8 2− system. The results revealed that a more aggressive oxidation of benzoquinones and benzoquinoneimines by the sunlight/Fe2+/S2O8 2− method showed a more rapid and more complete removal of chromaticity than that of the UV/Fe2+/S2O8 2− method. It was showed that they were photosensitizers, and they could generate 1O2 and O 2 −· which could promote the formation of SO 4 −· and ·OH in the sunlight system. Nevertheless, for benzoquinones, the sunlight/S2O8 2− method was superior to the UV/S2O8 2− method. For benzoquinoneimines, the sunlight/S2O8 2− method was inferior to the UV/S2O8 2− method. In addition, the yield of SO 4 −· in the sunlight/Fe2+/S2O8 2− system was more than that of the UV/Fe2+/S2O8 2− system. Therefore, the photosensitivity of benzoquinones is superior to benzoquinoneimines in water treatment. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Research on Chemical Intermediates Springer Journals

Research on photosensitivity of benzoquinones and benzoquinoneimines in the sunlight/Fe2+/S2O8 2− system

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Publisher
Springer Netherlands
Copyright
Copyright © 2016 by Springer Science+Business Media Dordrecht
Subject
Chemistry; Catalysis; Physical Chemistry; Inorganic Chemistry
ISSN
0922-6168
eISSN
1568-5675
D.O.I.
10.1007/s11164-016-2753-y
Publisher site
See Article on Publisher Site

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