{"title":"Nitrate Removal on a Cu/Cu2O Photocathode under UV Irradiation and Bias Potential","authors":"F. Paschoal, L. Núñez, M. Lanza, M. Zanoni","doi":"10.1515/jaots-2013-0106","DOIUrl":null,"url":null,"abstract":"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.","PeriodicalId":14870,"journal":{"name":"Journal of Advanced Oxidation Technologies","volume":"30 1","pages":"63 - 70"},"PeriodicalIF":0.0000,"publicationDate":"2013-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"20","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Advanced Oxidation Technologies","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1515/jaots-2013-0106","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q","JCRName":"Chemistry","Score":null,"Total":0}
引用次数: 20
Abstract
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.
摘要:本文介绍了一种适用于光电化学法处理硝酸盐污染水的方法。采用Cu/Cu2O电沉积电极作为光电阴极，在UV照射下具有长期稳定性，外加电位为+0.2 V vs Ag/AgCl。在此条件下，在NaCl 0.07 mol L-1和pH = 7的条件下，电解75 min后，93%的硝酸盐被去除。Cu/Cu2O光电极上的硝酸盐还原发生在阴极室电池中，通过紫外线照射下产生的电子，正如预期的那样，p型电极分别产生42%的剩余亚硝酸盐和52%的气态氮。
期刊介绍：
The Journal of advanced oxidation technologies (AOTs) has been providing an international forum that accepts papers describing basic research and practical applications of these technologies. The Journal has been publishing articles in the form of critical reviews and research papers focused on the science and engineering of AOTs for water, air and soil treatment. Due to the enormous progress in the applications of various chemical and bio-oxidation and reduction processes, the scope of the Journal is now expanded to include submission in these areas so that high quality submission from industry would also be considered for publication. Specifically, the Journal is soliciting submission in the following areas (alphabetical order): -Advanced Oxidation Nanotechnologies -Bio-Oxidation and Reduction Processes -Catalytic Oxidation -Chemical Oxidation and Reduction Processes -Electrochemical Oxidation -Electrohydraulic Discharge, Cavitation & Sonolysis -Electron Beam & Gamma Irradiation -New Photocatalytic Materials and processes -Non-Thermal Plasma -Ozone-based AOTs -Photochemical Degradation Processes -Sub- and Supercritical Water Oxidation -TiO2 Photocatalytic Redox Processes -UV- and Solar Light-based AOTs -Water-Energy (and Food) Nexus of AOTs
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