Degradation of toluene in a three-electrode dielectric barrier discharge reactor: Promotion of discharge filaments by negative pulse bias

Degradation of toluene in a three-electrode dielectric barrier discharge reactor: Promotion of discharge filaments by negative pulse bias | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Research Article Degradation of toluene in a three-electrode dielectric barrier discharge reactor: Promotion of discharge filaments by negative pulse bias Jiayao Chen, Jiayi Wang, Mireban Kadier, Fangchuan Zhong This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-6626335/v1 This work is licensed under a CC BY 4.0 License Status: Posted Version 1 posted You are reading this latest preprint version Abstract This work proposed a new reactor (PS-DBD), which consisted of a surface dielectric barrier discharge (S-DBD) reactor excited by AC power supply and a bias electrode excited by negative pulse power supply. The negative pulse excitation effectively promoted the formation of discharge filaments in PS-DBD reactor, which enhanced the plasma volume and discharge intensity. The experiment results of toluene’s degradation indicated that PS-DBD plasma could effectively enhanced the degradation rate (DE) of toluene compared with S-DBD reactor. The DE in PS-DBD (88.6%) reactor was about 49.9% higher than that in S-DBD reactor at SIE of 800 J/L. The significant increase in DE also led to a mild decrease in carbon balance (CB) and CO 2 selectivity ( S co2 ). The lowest CB in PS-DBD reactor was 78.4% at SIE of 570 J/L, which was 9.7% lower than that in S-DBD reactor. In addition, an appropriate power ratio could help to further improve the performance of PS-DBD plasma. When the P AC : P -Pulse ratio was 1:1 or 1:2, PS-DBD plasma performed the best. And the highest DE of 93.52% and CB of 88.75% were obtained. three-electrode plasma negative pulse VOCs S-DBD Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Posted Version 1 posted You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-6626335","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":463049696,"identity":"ee2f46e4-d425-41fb-846f-56c8043f04cc","order_by":0,"name":"Jiayao Chen","email":"","orcid":"","institution":"Donghua University Shanghai","correspondingAuthor":false,"prefix":"","firstName":"Jiayao","middleName":"","lastName":"Chen","suffix":""},{"id":463049697,"identity":"1e506fa4-607d-418a-81e3-14715c17c787","order_by":1,"name":"Jiayi Wang","email":"","orcid":"","institution":"Donghua University Shanghai","correspondingAuthor":false,"prefix":"","firstName":"Jiayi","middleName":"","lastName":"Wang","suffix":""},{"id":463049698,"identity":"4ce242cc-5d06-427e-a7c9-a5d78591f6e7","order_by":2,"name":"Mireban Kadier","email":"","orcid":"","institution":"Donghua University Shanghai","correspondingAuthor":false,"prefix":"","firstName":"Mireban","middleName":"","lastName":"Kadier","suffix":""},{"id":463049699,"identity":"a46edc95-5403-41d2-8331-16f32d6d22c5","order_by":3,"name":"Fangchuan Zhong","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAy0lEQVRIiWNgGAWjYBAC9gYGNhAtx3ADRLERoYXnAESZMelaEhuI18J+/NmDjztq0/tu9xgwfCg7zMA/u4GAFp6EdMOZZ47nzrxzxoBxxrnDDBJ3DuDXYi/BcEyat+1Y7oYbOQbMvG2HGQwkEgjYIsHYBtKSbgDS8pc4LcxsQC01CWAtjERp4Uljk5zZdsBw5o20goM959J5JG4Q0gIMMYmPbXXyfDeSNz74UWYtxz+DgBYoOAwmD4DMIEo9ENQRq3AUjIJRMApGIgAA0NFCnM90TroAAAAASUVORK5CYII=","orcid":"","institution":"Donghua University Shanghai","correspondingAuthor":true,"prefix":"","firstName":"Fangchuan","middleName":"","lastName":"Zhong","suffix":""}],"badges":[],"createdAt":"2025-05-09 07:53:20","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-6626335/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-6626335/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":86596791,"identity":"00f646d6-7fa4-4a4d-866b-15dbd714fc94","added_by":"auto","created_at":"2025-07-13 10:23:41","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":950709,"visible":true,"origin":"","legend":"","description":"","filename":"manuscript.pdf","url":"https://assets-eu.researchsquare.com/files/rs-6626335/v1_covered_fc41f241-d078-4c9e-ad0d-8b8c89e583f0.pdf"}],"financialInterests":"No competing interests reported.","formattedTitle":"Degradation of toluene in a three-electrode dielectric barrier discharge reactor: Promotion of discharge filaments by negative pulse bias","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":false,"hideJournal":true,"highlight":"","institution":"","isAcceptedByJournal":false,"isAuthorSuppliedPdf":true,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":false,"isPdf":true,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"[email protected]","identity":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true},"keywords":"three-electrode, plasma, negative pulse, VOCs, S-DBD","lastPublishedDoi":"10.21203/rs.3.rs-6626335/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-6626335/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eThis work proposed a new reactor (PS-DBD), which consisted of a surface dielectric barrier discharge (S-DBD) reactor excited by AC power supply and a bias electrode excited by negative pulse power supply. The negative pulse excitation effectively promoted the formation of discharge filaments in PS-DBD reactor, which enhanced the plasma volume and discharge intensity. The experiment results of toluene’s degradation indicated that PS-DBD plasma could effectively enhanced the degradation rate (DE) of toluene compared with S-DBD reactor. The DE in PS-DBD \u0026nbsp;(88.6%) reactor was about 49.9% higher than that in S-DBD reactor at SIE of 800 J/L. The significant increase in DE also led to a mild decrease in carbon balance (CB) and CO\u003csub\u003e2\u003c/sub\u003e selectivity (\u003cem\u003eS\u003c/em\u003e\u003csub\u003e\u003cem\u003eco2\u003c/em\u003e\u003c/sub\u003e\u003cimg width=\"30\" height=\"21\" src=\"data:image/png;base64,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\"/\u003e). The lowest CB in PS-DBD reactor was 78.4% at SIE of 570 J/L, which was 9.7% lower than that in S-DBD reactor. In addition, an appropriate power ratio could help to further improve the performance of PS-DBD plasma. When the \u003cem\u003eP\u003c/em\u003e\u003csub\u003eAC\u003c/sub\u003e:\u003cem\u003eP\u003c/em\u003e\u003csub\u003e-Pulse\u003c/sub\u003e ratio was 1:1 or 1:2, PS-DBD plasma performed the best. 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