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The role of surface chemistry at ceramic/electrolyte intefaces in the generation of pulsed corona discharges in water using porous ceramic-coated rod electrodes
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SYSNO ASEP 0333112 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title The role of surface chemistry at ceramic/electrolyte intefaces in the generation of pulsed corona discharges in water using porous ceramic-coated rod electrodes Author(s) Lukeš, Petr (UFP-V) RID, ORCID
Člupek, Martin (UFP-V) RID
Babický, Václav (UFP-V) RID
Šunka, Pavel (UFP-V) RIDSource Title Plasma Processes and Polymers. - : Wiley - ISSN 1612-8850
Roč. 6, č. 11 (2009), s. 719-728Number of pages 10 s. Publication form web - web Language eng - English Country DE - Germany Keywords non-thermal plasma ; electrical discharge ; water ; surface chemistry Subject RIV BL - Plasma and Gas Discharge Physics R&D Projects IAAX00430802 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z20430508 - UFP-V (2005-2011) UT WOS 000273283700003 DOI 10.1002/ppap.200900025 Annotation Effects associated with the electrical breakdown of water using porous ceramic-coated rod electrodes were investigated for two types of ceramics, oxide (corundum) and silicates (almandine). Properties of the ceramic layer and its interaction with the electrolyte were found as important factors in the generation of electrical discharges in water. Initiation of the discharge depended not only on the permittivity and porosity of the ceramic, but also the surface charge formed on the ceramic, which was determined by the polarity of the applied voltage, and the pH and chemical composition of aqueous solution. An electrical double layer associated with the buildup of surface charge at ceramic/electrolyte interface affected the electric field distribution on the ceramic electrode. Using monopolar high voltage pulses, this layer became polarized, which, under certain experimental conditions, eventually quenched the electrical discharge in water. Applying bipolar pulses eliminated these effects Workplace Institute of Plasma Physics Contact Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Year of Publishing 2010
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