4.6 Article

Examination of OH and H2O2 production by uniform and non-uniform modes of dielectric barrier discharge in He/air mixture

期刊

出版社

IOP Publishing Ltd
DOI: 10.1088/1361-6463/ac95a6

关键词

dielectric barrier discharge; laser induced fluorescence; hydroxyl radical; hydrogen peroxide

资金

  1. Princeton Collaborative Research Facility (PCRF) - U.S. Department of Energy (DOE), Office of Fusion Energy Sciences [DE-AC02-09CH11466, DE-SC0021379]
  2. U.S. Department of Energy (DOE) [DE-SC0021379] Funding Source: U.S. Department of Energy (DOE)

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In this study, a parametrical investigation of hydroxyl radical (OH) production in nanosecond dielectric barrier discharge (DBD) in He/air mixture was carried out using laser-induced fluorescence method. The differences between uniform and non-uniform modes of discharges, as well as the disparity in OH and H2O2 production, were the main focuses. The results indicate that the amount of OH generated in the gas phase and the delivery rate of downstream H2O2 to liquid depend on the mode of discharge operation, with the non-uniform DBD showing 30% and 3 times higher levels, respectively, compared to the diffuse discharge.
In this work we have carried out a parametrical study of hydroxyl radical (OH) generation in nanosecond dielectric barrier discharge (DBD) in He/air mixture using a laser-induced fluorescence approach. The foci of the study are the investigation of differences between uniform and non-uniform modes of the discharges and the difference in production of OH and H2O2 Nanosecond-time scale imaging of the discharge shows transition from streamer to diffuse mode when applied electric field to the discharge gap approaches similar to 90 kV cm(-1). The results show that both OH production in the gas phase and downstream H2O2 delivery rates to liquid depend on the discharge mode operation and are respectively 30% and 3 times higher for the non-uniform DBD compared to the diffuse discharge.

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