Journal
JOURNAL OF ELECTROSTATICS
Volume 72, Issue 3, Pages 222-227Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.elstat.2014.03.002
Keywords
Electrohydraulic discharge; Electron spin resonance; Free radical; Pulse high voltage; Streamer; Radical trapping agent
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The detection of free radicals such as hydroxyl radical and hydrogen radical for plasma in solution induced by a pulsed electrohydraulic discharge are successfully performed using electron spin resonance measurement. The plasma reactor is a barrier-type and consists of a stainless needle high-voltage (+35 to 65 kV) electrode partially immersed in the solution and a Pyrex glass solution container around which an aluminum film grounded electrode is wrapped. Streamers are induced in the solution. After adding iron (II) sulfate or radical trapping agent before the plasma application, the spectrum for radicals is clearly detected. A reactive dye solution is dramatically decolorized. (C) 2014 Elsevier B.V. All rights reserved.
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