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TiO2 Photocatalytic Oxidation of Toluene and PCE Vapor in the Air

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Published/Copyright: January 26, 2017
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Journal of Advanced Oxidation Technologies
From the journal Journal of Advanced Oxidation Technologies Volume 3 Issue 3

Abstract

A thin film of TiO2 coated on a glass cylinder was used as the catalyst for the photo-oxidation of toluene and PCE. Two germicide mercury lamps, 4 watts each, were served as the UV source. Effects of light intensity, humidity, reactant concentration, and retention time were examined. The humidity effect indicated that the photocatalytic oxidation of toluene could be through hydroxyl free radicals which needed water molecules to produce. While for PCE, the oxidation mechanism could be through chlorine free radicals which did not need water molecules. The kinetic data of both toluene and PCE photocatalytic oxidation could be described by the Langmuir- Hinshelwood model. The oxidation rate constant of PCE was about 23 times higher than that of toluene. The intermediates identified during the photocatalytic oxidation of PCE were phosgene, trichloro-acetylchloride, and chloroform. For toluene, no significant amount of intermediates other than carbon dioxide could be detected.

Received: 1997-9-26
Accepted: 1998-3-3
Published Online: 2017-1-26
Published in Print: 1998-7-1

© 2017 by Walter de Gruyter Berlin/Boston

Articles in the same Issue

  1. Masthead
  2. Contents
  3. Preface
  4. Editorial
  5. Research Articles
  6. UV Radiation Distribution in A Flat-Plate Photocatalytic Reactor with Suspended Particles of Titanium Dioxide. Mathematical Model and Experimental Verification
  7. Quantum Efficiencies of the Photocatalytic Decomposition of Trichloroethylene in Water. A Comparative Study for Different Varieties of Titanium Dioxide Catalysts
  8. Reaction Kinetics of the Suspended Solid, Titanium Dioxide Photocatalyzed Decompostion of Trichloroethylene in Water
  9. Fiber-Mediated Titanium Dioxide Photocatalysis
  10. Computational and Experimental Studies of UV/Titania Photocatalytic Oxidation of VOCs in Honeycomb Monoliths
  11. Photodegradation of Organic Compounds in the Vapor Phase Using TiO2-Coated Optical Fibers
  12. Photocatalysis with Fe/TiO2 Semiconductors and TiO2 Sensitized by Phthalocyanines
  13. TiO2-Mediated Photoelectrocatalytic Purification of Water
  14. Performance Evaluation of a Titania-coated Reticulated Foam Photocatalytic Oxidation Reactor
  15. Modeling of a Photocatalytic Honeycombed Monolith Reactor for Air Purification Processes
  16. Photoreduction of Copper on TiO2 Nanoparticles Modified with Polydentate Ligands
  17. Decomposition of 2-Chlorobiphenyl in Aqueous Solutions by UV Irradiation with the Presence of Titanium Dioxide
  18. Effect of Fluorescent Illumination on Bacteria Supported on Glass Slides
  19. TiO2 Photocatalytic Oxidation of Toluene and PCE Vapor in the Air
  20. Adsorption and Photochemical Behavior of Polycyclic Aromatic Hydrocarbons on a non-semi conductive surface such as silica
https://doi.org/10.1515/jaots-1998-0317

Articles in the same Issue

  1. Masthead
  2. Contents
  3. Preface
  4. Editorial
  5. Research Articles
  6. UV Radiation Distribution in A Flat-Plate Photocatalytic Reactor with Suspended Particles of Titanium Dioxide. Mathematical Model and Experimental Verification
  7. Quantum Efficiencies of the Photocatalytic Decomposition of Trichloroethylene in Water. A Comparative Study for Different Varieties of Titanium Dioxide Catalysts
  8. Reaction Kinetics of the Suspended Solid, Titanium Dioxide Photocatalyzed Decompostion of Trichloroethylene in Water
  9. Fiber-Mediated Titanium Dioxide Photocatalysis
  10. Computational and Experimental Studies of UV/Titania Photocatalytic Oxidation of VOCs in Honeycomb Monoliths
  11. Photodegradation of Organic Compounds in the Vapor Phase Using TiO2-Coated Optical Fibers
  12. Photocatalysis with Fe/TiO2 Semiconductors and TiO2 Sensitized by Phthalocyanines
  13. TiO2-Mediated Photoelectrocatalytic Purification of Water
  14. Performance Evaluation of a Titania-coated Reticulated Foam Photocatalytic Oxidation Reactor
  15. Modeling of a Photocatalytic Honeycombed Monolith Reactor for Air Purification Processes
  16. Photoreduction of Copper on TiO2 Nanoparticles Modified with Polydentate Ligands
  17. Decomposition of 2-Chlorobiphenyl in Aqueous Solutions by UV Irradiation with the Presence of Titanium Dioxide
  18. Effect of Fluorescent Illumination on Bacteria Supported on Glass Slides
  19. TiO2 Photocatalytic Oxidation of Toluene and PCE Vapor in the Air
  20. Adsorption and Photochemical Behavior of Polycyclic Aromatic Hydrocarbons on a non-semi conductive surface such as silica
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