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Quantum Efficiencies of the Photocatalytic Decomposition of Trichloroethylene in Water. A Comparative Study for Different Varieties of Titanium Dioxide Catalysts
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María I. Cabrera
Published/Copyright:
January 26, 2017
Abstract
Quantum efficiencies of the photocatalytic decomposition of trichloroethylene employing a suspension of titanium dioxide in water and polychromatic radiation have been investigated. Aldrich, Degussa P25 and Hombikat 100 titanium dioxides were studied using an approach that permits the correct evaluation of the true absorbed UV radiation. Computed results using initial reaction rates show that differences in efficiencies among the different varieties of titanium dioxides are not very dramatic. However, reaction conversion after several hours of identical operating conditions favors the use of the Aldrich catalyst. Quantum efficiencies show an important dependence with the initial reactant concentration, the irradiation intensity and the catalyst loading. Under some operating conditions, quantum efficiencies as high as 50 % were measured.
Keywords: Photocatalysis; Quantum efficiency; Titanium dioxide; Radiation absorption effects; Trichloroethylene
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
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Articles in the same Issue
- Masthead
- Contents
- Preface
- Editorial
- Research Articles
- UV Radiation Distribution in A Flat-Plate Photocatalytic Reactor with Suspended Particles of Titanium Dioxide. Mathematical Model and Experimental Verification
- Quantum Efficiencies of the Photocatalytic Decomposition of Trichloroethylene in Water. A Comparative Study for Different Varieties of Titanium Dioxide Catalysts
- Reaction Kinetics of the Suspended Solid, Titanium Dioxide Photocatalyzed Decompostion of Trichloroethylene in Water
- Fiber-Mediated Titanium Dioxide Photocatalysis
- Computational and Experimental Studies of UV/Titania Photocatalytic Oxidation of VOCs in Honeycomb Monoliths
- Photodegradation of Organic Compounds in the Vapor Phase Using TiO2-Coated Optical Fibers
- Photocatalysis with Fe/TiO2 Semiconductors and TiO2 Sensitized by Phthalocyanines
- TiO2-Mediated Photoelectrocatalytic Purification of Water
- Performance Evaluation of a Titania-coated Reticulated Foam Photocatalytic Oxidation Reactor
- Modeling of a Photocatalytic Honeycombed Monolith Reactor for Air Purification Processes
- Photoreduction of Copper on TiO2 Nanoparticles Modified with Polydentate Ligands
- Decomposition of 2-Chlorobiphenyl in Aqueous Solutions by UV Irradiation with the Presence of Titanium Dioxide
- Effect of Fluorescent Illumination on Bacteria Supported on Glass Slides
- TiO2 Photocatalytic Oxidation of Toluene and PCE Vapor in the Air
- Adsorption and Photochemical Behavior of Polycyclic Aromatic Hydrocarbons on a non-semi conductive surface such as silica
Keywords for this article
Photocatalysis;
Quantum efficiency;
Titanium dioxide;
Radiation absorption effects;
Trichloroethylene
Articles in the same Issue
- Masthead
- Contents
- Preface
- Editorial
- Research Articles
- UV Radiation Distribution in A Flat-Plate Photocatalytic Reactor with Suspended Particles of Titanium Dioxide. Mathematical Model and Experimental Verification
- Quantum Efficiencies of the Photocatalytic Decomposition of Trichloroethylene in Water. A Comparative Study for Different Varieties of Titanium Dioxide Catalysts
- Reaction Kinetics of the Suspended Solid, Titanium Dioxide Photocatalyzed Decompostion of Trichloroethylene in Water
- Fiber-Mediated Titanium Dioxide Photocatalysis
- Computational and Experimental Studies of UV/Titania Photocatalytic Oxidation of VOCs in Honeycomb Monoliths
- Photodegradation of Organic Compounds in the Vapor Phase Using TiO2-Coated Optical Fibers
- Photocatalysis with Fe/TiO2 Semiconductors and TiO2 Sensitized by Phthalocyanines
- TiO2-Mediated Photoelectrocatalytic Purification of Water
- Performance Evaluation of a Titania-coated Reticulated Foam Photocatalytic Oxidation Reactor
- Modeling of a Photocatalytic Honeycombed Monolith Reactor for Air Purification Processes
- Photoreduction of Copper on TiO2 Nanoparticles Modified with Polydentate Ligands
- Decomposition of 2-Chlorobiphenyl in Aqueous Solutions by UV Irradiation with the Presence of Titanium Dioxide
- Effect of Fluorescent Illumination on Bacteria Supported on Glass Slides
- TiO2 Photocatalytic Oxidation of Toluene and PCE Vapor in the Air
- Adsorption and Photochemical Behavior of Polycyclic Aromatic Hydrocarbons on a non-semi conductive surface such as silica
