4.7 Article

Formation of nitrophenols upon UV irradiation of phenol and nitrate in aqueous solutions and in TiO2 aqueous suspensions

Journal

CHEMOSPHERE
Volume 44, Issue 2, Pages 237-248

Publisher

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0045-6535(00)00170-3

Keywords

photochemical transformations; nitroaromatics; photocatalysis

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The formation of nitrophenols was studied as a consequence of ultra violet (UV) irradiation of aqueous solutions of phenol and nitrate in the range of pH 1-12. The study was performed both in homogeneous phase and in the presence of water-suspended TiO2. The effects of pH, dissolved oxygen and 2-propanol as (OH)-O-. scavenger have been evaluated. A reaction mechanism is proposed, based on the experimental results. (C) 2001 Elsevier Science Ltd. All rights reserved.

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