Journal
APPLIED CATALYSIS B-ENVIRONMENTAL
Volume 62, Issue 3-4, Pages 274-281Publisher
ELSEVIER
DOI: 10.1016/j.apcatb.2005.08.008
Keywords
optical fiber reactor; titanium dioxide; photocatalysis; fenamidone
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The photocatalytic degradation of the fungicide fenamidone is studied in a TiO2-coated optical fiber photoreactor. Fenamidone is slowly transformed with a kinetic order of 1 and a degradation rate of 0.02 h(-1). Intermediate products were isolated and identified by means of solid phase extraction (SPE) coupled to liquid chromatography-mass spectrometry techniques (LC-MS). A proposed degradation pathway of fenamidone is presented, involving mainly hydroxylation and oxidation reactions. Carboxylic acids and sulfate ions resulting from the same reaction in a powder reactor were also identified. (c) 2005 Elsevier B.V. All rights reserved.
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