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The catalytic role of tungsten electrode material in the plasmachemical activity of a pulsed corona discharge in water
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SYSNO ASEP 0368575 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title The catalytic role of tungsten electrode material in the plasmachemical activity of a pulsed corona discharge in water Author(s) Lukeš, Petr (UFP-V) RID, ORCID
Člupek, Martin (UFP-V) RID
Babický, Václav (UFP-V) RID
Sisrová, I. (CZ)
Janda, V. (CZ)Source Title Plasma Sources Science & Technology. - : Institute of Physics Publishing - ISSN 0963-0252
Roč. 20, č. 3 (2011), 034011-034011Number of pages 11 s. Publication form web - web Language eng - English Country GB - United Kingdom Keywords corona discharge ; water ; erosion ; tungsten ; hydrogen peroxide ; dimethylsulfoxide Subject RIV BL - Plasma and Gas Discharge Physics R&D Projects IAAX00430802 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) GD104/09/H080 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z20430508 - UFP-V (2005-2011) UT WOS 000290724000012 DOI 10.1088/0963-0252/20/3/034011 Annotation Effects of tungsten material used as high voltage needle electrode on the production of hydrogen peroxide and degradation of dimethylsulfoxide by the pulsed corona discharge in water have been investigated. Reactor of needle-plate electrode geometry was used. Erosion of tungsten electrodes by the discharge was evaluated. The yields of H2O2 production and decomposition of DMSO by the discharge obtained using tungsten electrodes were compared with that determined for titanium electrodes. The electrode erosion increased significantly with the increasing solution conductivity. Large fraction of the tungsten material released from the tungsten electrode by erosion in the discharge was determined in the solution in dissolved form as tungstate ions. Tungstate ions were shown to play dominant role in the decomposition of H2O2 produced by the discharge with tungsten electrode. Higher degradation of DMSO determined for tungsten was attributed to the tungstate-catalyzed oxidation of DMSO by H2O2 Workplace Institute of Plasma Physics Contact Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Year of Publishing 2012
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