{"title":"Effect of electrode oxide film in micro arc oxidation on water treatment","authors":"Zhiyu Yan, Manting Men, Bing Sun, Qiao-min Wang, Yue Han, M. Wen","doi":"10.1515/jaots-2016-0189","DOIUrl":null,"url":null,"abstract":"Abstract This study investigated the characteristics of liquid phase plasma-electrode catalysis system formed by micro-arc oxidation with titanium-aluminum (Ti-Al) alloy as the anode. Under different power supplies, the wastewater from printing and textile dyeing industries simulated with Rhodamine B (RhB) dye was decolored. We evaluated the impact of oxide film formed on the electrodes on the plasma effects. Our findings showed that repeated applications of opposite voltages could damage the insulating oxide film formed on the electrode surface, contributing to its breakdown and enhancing micro-arc oxidation. Intermittent power supply also modulated the coverage of oxide film by enhancing the cooling of electrolyte. Morphological study of oxide film revealed the presences of rutile and anatase titanium dioxide (TiO2) in the oxide film, which is conducive to various catalytic functions in the plasma environment.","PeriodicalId":14870,"journal":{"name":"Journal of Advanced Oxidation Technologies","volume":"1 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"4","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Advanced Oxidation Technologies","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1515/jaots-2016-0189","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: 4
Abstract
Abstract This study investigated the characteristics of liquid phase plasma-electrode catalysis system formed by micro-arc oxidation with titanium-aluminum (Ti-Al) alloy as the anode. Under different power supplies, the wastewater from printing and textile dyeing industries simulated with Rhodamine B (RhB) dye was decolored. We evaluated the impact of oxide film formed on the electrodes on the plasma effects. Our findings showed that repeated applications of opposite voltages could damage the insulating oxide film formed on the electrode surface, contributing to its breakdown and enhancing micro-arc oxidation. Intermittent power supply also modulated the coverage of oxide film by enhancing the cooling of electrolyte. Morphological study of oxide film revealed the presences of rutile and anatase titanium dioxide (TiO2) in the oxide film, which is conducive to various catalytic functions in the plasma environment.
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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