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Nitrate Removal on a Cu/Cu2O Photocathode under UV Irradiation and Bias Potential
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Fabiana Maria Monteiro Paschoal
Veröffentlicht/Copyright:
30. November 2016
Abstract
The present work describes a suitable method for treatment of water contaminated with nitrate by using a photo-electrochemical method. A Cu/Cu2O electrodeposited electrode is used as photocathode with long-term stability under UV irradiation and applied potential of +0.2 V vs Ag/AgCl. In this condition 93% of nitrate is removed after 75 min of photoelectrolysis conducted in NaCl 0.07 mol L-1 and pH = 7. Nitrate reduction on Cu/Cu2O photoelectrodes occurs in the cathodic compartment cell via electrons generated under UV irradiation, as expected for a p-type electrode leading to 42% of remaining nitrite and 52% gaseous nitrogen derived, respectively.
Keywords : Cu/Cu2O electrode; nitrate reduction; photoelectrocatalytic reduction; nitrogen selectivity.
Received: 2012-7-1
Revised: 2012-9-28
Accepted: 2012-11-8
Published Online: 2016-11-30
Published in Print: 2013-1-1
© 2016 by Walter de Gruyter Berlin/Boston
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Schlagwörter für diesen Artikel
Cu/Cu2O electrode;
nitrate reduction;
photoelectrocatalytic reduction;
nitrogen selectivity.
Artikel in diesem Heft
- Electrochemical Inactivation of P. Aeruginosa, A. hydrophila, L. pneumophila using Boron Doped Diamond Anodes
- Effects of O2 and H2O2 on TiO2 Photocatalytic Efficiency Quantified by Formaldehyde Formation from Tris(hydroxymethyl)aminomethane
- Non-Thermal Plasma Aided Soil Decontamination
- Ozone Degradation of Alcohols, Ketones, Ethers and Hydroxybenzenes: Determination of Pathways and Kinetic Parameters
- Power Systems of Plasma Reactors for Non-Thermal Plasma Generation
- Nitrate Removal on a Cu/Cu2O Photocathode under UV Irradiation and Bias Potential
- Gas-phase Photocatalytic Partial Oxidation of Cyclohexane to Cyclohexanol and Cyclohexanone on Au/TiO2 Photocatalysts
- DegradationMechanism of Acidic Congo Red in Sunlight/Fe2+/S2O82- System
- Oxidative Degradation of Bisphenol A: A Comparison Between Fenton Reagent, UV, UV/H2O2 and Ultrasound
- CuInS2 Superstrate Solar Cells with ZnO Compact Layer Fabricated by Totally Non-vacuum Methods
- Degradation of Ciprofloxacin and Oxytetracycline Antibiotics in Waste Sewage Sludge by Ozonation
- Quantitative Removal of β-Lactam Antibiotic Activity by Hydroxyl Radical Reaction in Water: How Much Oxidation is Enough?
- Photoelectrocatalytic Decomposition of Acid Red 4 in Aqueous Solution Using Prepared TiO2 Nanotube Arrays of Various Lengths
- Nitrogen-doped TiO2 Photocatalysts Synthesized from Titanium Nitride: Characterizations and Photocatalytic Hydrogen Evolution Performance
- Investigation of the use of Chlorine Based Advanced Oxidation in Surface Water: Oxidation of Natural Organic Matter and Formation of Disinfection Byproducts
- Photodegradation of Benzo-[a]-pyrene on the Surface of the Photocatalytic Paints and Analysis of the Degradation Products
- Ozonation of Textile Reactive Red 198 Dye in a CSTR
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- Degradation of Dithizone by Non Thermal Quenched Plasma of Gliding Arc Type
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