Formation of nitrophenols upon UV irradiation of phenol and nitrate in aqueous solutions and in TiO2 aqueous suspensions.
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 scavenger have been evaluated. A reaction mechanism is proposed, based on the experimental results.
Vione
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Dipartimento di Chimica Analitica, Università di Torino, Italy.
Maurino
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Minero
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Vincenti
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M
Pelizzetti
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D016166:Free Radical Scavengers / Q000737:chemistry; D006863:Hydrogen-Ion Concentration; D009566:Nitrates / Q000737:chemistry*; D009596:Nitrophenols / Q000737:chemistry*; D010083:Oxidants, Photochemical / Q000737:chemistry; D010777:Photochemistry; D014025:Titanium / Q000737:chemistry; D014466:Ultraviolet Rays; D014874:Water Pollutants, Chemical
D016166:Free Radical Scavengers; D009566:Nitrates; D009596:Nitrophenols; D010083:Oxidants, Photochemical; D014874:Water Pollutants, Chemical; C009495:titanium dioxide; D014025:Titanium