Comparison of the ozone generation efficiency by two different discharge modes of dielectric barrier discharge

Osawa, Naoki; Kaga, H.; Fukuda, Y.; Harada, Shinichi; Yoshioka, Yoshio; Hanaoka, Ryoichi

doi:10.1051/epjap/2010100439

Cited by 11 publications

(8 citation statements)

References 5 publications

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“…When the plasma was switched on, both N-related species (HNO 2 , N 2 O, NO 2 , NO) and C-related species (HCOOH, CO, CO 2 ) could be clearly identified. Ozone, which is frequently observed in air-containing DBDs, [27][28][29][30] was not detected under our experimental conditions. The OH radical, detected from OES, was absent here due to its high reactivity, short lifetime, and therefore low density.…”

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confidence: 51%

Infrared gas phase study on plasma-polymer interactions in high-current diffuse dielectric barrier discharge

Liu

Welzel

Starostin³

et al. 2017

Journal of Applied Physics

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Document VersionPublisher's PDF, also known as Version of Record (includes final page, issue and volume numbers) Please check the document version of this publication:• A submitted manuscript is the author's version of the article upon submission and before peer-review. There can be important differences between the submitted version and the official published version of record. People interested in the research are advised to contact the author for the final version of the publication, or visit the DOI to the publisher's website.• The final author version and the galley proof are versions of the publication after peer review.• The final published version features the final layout of the paper including the volume, issue and page numbers. Link to publication General rightsCopyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights.• Users may download and print one copy of any publication from the public portal for the purpose of private study or research.• You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying the publication in the public portal ? Take down policyIf you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim. Infrared gas phase study on plasma-polymer interactions in high-current diffuse dielectric barrier discharge A roll-to-roll high-current diffuse dielectric barrier discharge at atmospheric pressure was operated in air and Ar/N 2 /O 2 gas mixtures. The exhaust gas from the discharge was studied using a highresolution Fourier-transform infrared spectrometer in the range from 3000 to 750 cm À1 to unravel the plasma-polymer interactions. The absorption features of H x N y O z , CO x , and HCOOH (formic acid) were identified, and the relative densities were deduced by fitting the absorption bands of the detected molecules. Strong interactions between plasma and polymer (Polyethylene-2,6-naphthalate, or PEN) in precursor-free oxygen-containing gas mixtures were observed as evidenced by a high CO x production. The presence of HCOOH in the gas effluent, formed through plasmachemical synthesis of CO x , turns out to be a sensitive indicator for etching. By adding tetraethylorthosilicate precursor in the plasma, dramatic changes in the CO x production were measured, and two distinct deposition regimes were identified. At high precursor flows, a good agreement with the precursor combustion and the CO x production was observed, whereas at low precursor flows an etching-deposition regime transpires, and the CO x production is dominated by polymer etching. Published by AIP Publishing. [http://dx

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confidence: 51%

Infrared gas phase study on plasma-polymer interactions in high-current diffuse dielectric barrier discharge

Liu

Welzel

Starostin³

et al. 2017

Journal of Applied Physics

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“…It is nevertheless possible to obtain a diffuse DBD in air as reported in [23][24][25][26][27][28][29][30][31][32]. In 2011, Osawa et al showed for the first time the existence of a APTD discharge in air at low frequency (until 1 kHz) [23].…”

Section: Introductionmentioning

confidence: 95%

Influence of the dielectric thickness on the homogeneity of a diffuse dielectric barrier discharge in air

Belinger

Dap

Naudé

2022

J. Phys. D: Appl. Phys.

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This work focuses on a diffuse Dielectric Barrier Discharge (DBD) in atmospheric pressure air using an original experimental approach. In air, the role of the capacitance on the discharge regime has not yet been studied even though it affects the discharge current. To address this gap in knowledge, the dielectric capacitance was modified by the means of the dielectric thickness in a plane-to-plane DBD configuration. The discharge regime was analyzed using short exposure time photographs and electrical measurements in order to remove any potential uncertainties regarding the diffuse nature of the DBD in atmospheric pressure air. The influence of the dielectric capacitance on the discharge regime was analyzed thanks to the working domain of the discharge. Additionally, using an original electrical model of the discharge, the effective surface and current density of the discharge was obtained only from electrical measurements. Thus, the crucial role of the maximum current density on the discharge regime was highlighted. The control of the current density by the means of the dielectric capacitance led to the obtention of a diffuse discharge at a frequency up to 5 kHz for the very first time. Considering this high frequency, the possibility of using a DBD in air at atmospheric pressure for coating applications is discussed.

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“…The DBD was found to be a kind of atmospheric pressure Townsend discharge (APTD). Then, we applied the APTD to air-fed and O 2 -fed ozone generators, and investigated the ozone yield [8,9]. As a result, we found that (1) in the case of air-fed ozone generator, a e-mail: n.osawa@neptune.kanazawa-it.ac.jp Contribution to the topical issue "The 15th International Symposium on High Pressure Low Temperature Plasma Chemistry (HAKONE XV)", edited by Nicolas Gherardi and Tomáš Hoder the ozone yield by the APTD was lower than that by the filamentary DBD in the small specific input energy (SIE) region.…”

Section: Introductionmentioning

confidence: 99%

Effect of nitrogen addition to ozone generation characteristics by diffuse and filamentary dielectric barrier discharges at atmospheric pressure

Osawa

Tsuji

Ogiso

et al. 2017

Eur. Phys. J. Appl. Phys.

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Abstract. Ozone is widely used for gas treatment, advanced oxidation processes, microorganisms inactivation, etc. In this research, we investigated the effect of nitrogen addition to ozone generation characteristics by atmospheric pressure Townsend discharge (APTD) type and filamentary dielectric barrier discharge (DBD) type ozone generators. The result showed that the ozone generated by the filamentary DBD increases rapidly with the increase of O 2 content, and is higher than that by the APTD. On the other hand, it is interesting that the ozone generated by the APTD gradually decreases with the increase of O2 content. In order to clarify why the characteristics of ozone generation by the two kinds of discharge modes showed different dependency to the N2 content, we analyzed the exhaust gas composition using FTIR spectroscopy and calculated the rate coefficients using BOLSIG+ code. As a result, we found that although O2 content decreased with increasing N2 content, additional O atoms produced by excited N2 molecules contribute to ozone generation in case of APTD.

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Comparison of the ozone generation efficiency by two different discharge modes of dielectric barrier discharge

Cited by 11 publications

References 5 publications

Infrared gas phase study on plasma-polymer interactions in high-current diffuse dielectric barrier discharge

Infrared gas phase study on plasma-polymer interactions in high-current diffuse dielectric barrier discharge

Influence of the dielectric thickness on the homogeneity of a diffuse dielectric barrier discharge in air

Effect of nitrogen addition to ozone generation characteristics by diffuse and filamentary dielectric barrier discharges at atmospheric pressure

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