Comparison of Photocatalytic Activities of Commercial Titanium Dioxide Powders Immobilised on Glass Substrates
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Patrick S. M. Dunlop
,
Americo Galdi
Abstract
Semiconductor photocatalysis is an advanced oxidation technology reported to be effective for the degradation of a wide range of organic pollutants found in water. Titanium dioxide is the most suitable photocatalyst for water treatment as it is insoluble under normal pH conditions, is photoactive, photostable, readily available and inexpensive. In this work Millennium Chemicals PC500, PC105, PC100, PC50, PC10 and Evonik Degussa P25 powders were immobilised onto borosilicate glass, via dip-coating and spray coating, producing thick films ranging from 0.2 to 1.4 mg catalyst per square cm of glass substrate. The photocatalytic activity of the immobilised films was compared under back-face UVA irradiation in a stirred-tank reactor using formic acid and phenol as model pollutants. Based upon the rate constant derived from the removal of the parent compound, and using the optimum catalyst loading determined under the experimental conditions employed, the order of photocatalytic activity for the degradation of formic acid was found to be P25 > PC100 > PC50 > PC105 ≥ PC500 > PC10, while for phenol degradation the order was P25 > PC50 > PC105 > PC100 ≥ PC500 > PC10.
© 2016 by Walter de Gruyter Berlin/Boston
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- Arc Plasma for Materials Detoxification and their Conversion
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- Coupling of Adsorption on Zeolite and V-UV Irradiation for the Treatment of VOC Containing Air Streams: Effect of TiO2 on the VOC Degradation Efficiency
- Anaerobic Photocatalytic Oxidation of Carbohydrates in Aqueous Pt/TiO2 Suspensions with Simultaneous Production of Hydrogen
- Using Water Hydrogen Instead of Reducing Gas in the Production of Direct Reduced Iron (DRI)
Articles in the same Issue
- Achieving Stable Biological Oxidation of Erratic Waste Gas Streams by Utilizing Cyclic Adsorption/Desorption Beds
- Production of Titanium Dioxide Nanoparticles and Nanostructures from Dye Wastewater Sludge - Characterisation and Evaluation of Photocatalytic activity
- The Application of Photocatalytic Oxidation in Removing Pentachlorophenol from Contaminated Water
- H2O2/UV-C Treatment of the Economically Important Naphthalene Sulfonate J-Acid: Process Optimization, Kinetic Evaluation and Activated Sludge Inhibition
- Nonthermal Plasma Destruction of Trifluoromethane Using a Dielectric- Packed Bed Reactor
- Investigation of Electric Discharge Sound in Atmospheric Pressure Plasma
- Chlorophenols Contaminated Soil Remediation by Peroxidation
- Synthesis, Characterization and Visible-Light Photocatalytic Activity of La2O3/SnO2 Nanocomposite
- Electrical Discharge Characteristics Using a Bubble in Water and Their Applications to the Water Treatment
- Development of Higher Yield Ozonizer Based on Nano-Seconds Pulsed Discharge
- Ozone Mass Transfer in a Recirculating Loop Semibatch Reactor Operated at High Pressure
- Arc Plasma for Materials Detoxification and their Conversion
- Comparison of Photocatalytic Activities of Commercial Titanium Dioxide Powders Immobilised on Glass Substrates
- Coupling of Adsorption on Zeolite and V-UV Irradiation for the Treatment of VOC Containing Air Streams: Effect of TiO2 on the VOC Degradation Efficiency
- Anaerobic Photocatalytic Oxidation of Carbohydrates in Aqueous Pt/TiO2 Suspensions with Simultaneous Production of Hydrogen
- Using Water Hydrogen Instead of Reducing Gas in the Production of Direct Reduced Iron (DRI)
