Journal
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
Volume 167, Issue 2-3, Pages 87-94Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jphotochem.2004.05.015
Keywords
photocatalysis; ozonation; hexane; titanium dioxide; ozone; indoor air
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The degradations of trace hexane in the gas phase by O(3)fUV, TiO2/UV and O3TiO2/UV were studied. The effects of the flow rate, inlet concentration of hexane, water vapor concentration and ozone dosage on the conversion of hexane in the three processes were investigated, respectively. The experimental results showed that the addition of ozone significantly increase photocatalytic degradation of hexane. The reaction rates of hexane by O-3/UV and O-3/TiO2/UV increased linearly with an increase of ozone addition, which increased faster in O3UV than in O-3/TiO2/UV. L-H birnolecular model was successfully used to correlate photocatalytic reaction rate data under various hexane and water vapor concentrations. A new model combining L-H model and ozone photolysis was developed to correlate reaction rate data of hexane in O3TiO2/UV. (C) 2004 Elsevier B.V. All rights reserved.
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