Journal
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL
Volume 374, Issue -, Pages 66-72Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.molcata.2013.03.018
Keywords
Reactive dye; Photocatalysis; CI Reactive Red 35; Azo dye; LC/MS
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Funding
- NIPER, Mohali
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The photodegradation of Reactive Red 35 dye by artificial UV light was investigated in the presence of titania P-25. Six reaction intermediates were identified and separated by LC/MS, giving insight into mechanistic details and degradation pathways. The degradation process takes place through competitive reactions such as removal of chromophoric group, hydroxylation of the aromatic ring, substitution on aromatic ring, devinylsulphonation, C-N bond cleavage, decarboxylation and further ring opening to give aliphatic compounds. The probable degradation pathways were proposed and discussed. (C) 2013 Elsevier B.V. All rights reserved.
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