Activation of low concentration persulfate with CoFe 2 O 4 @rGO under UV radiation to efficiently remove NO from flue gas

Activation of low concentration persulfate with CoFe 2 O 4 @rGO under UV radiation to efficiently remove NO from flue gas | 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 Activation of low concentration persulfate with CoFe 2 O 4 @rGO under UV radiation to efficiently remove NO from flue gas Xiaoying Ma, Xiangxue Wang, Shuangchen Ma This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-7288946/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 30 Oct, 2025 Read the published version in Journal of Porous Materials → Version 1 posted 9 You are reading this latest preprint version Abstract Activating low concentration persulfate (PS) to realize high-efficiency oxidation of NO is the key to reduce the cost of denitration by PS. In this paper, cobalt ferrite anchored reduced graphene oxide (CoFe 2 O 4 @rGO) was prepared by hydrothermal synthesis, and coupled with ultraviolet light (UV) was used to activate low concentration PS to oxidize and absorb NO in flue gas. The study found that UV irradiation significantly improved the catalytic performance of CoFe 2 O 4 @rGO, and the greater UV power, the higher the denitration efficiency. It can not only activate PS, but also reduce the recombination probability of photoelectrons and holes of CoFe 2 O 4 . With the aid of the oxidation ability of surface holes and the super electron transfer ability of rGO, the high-efficiency denitration of low-concentration PS is realized. When the UV was 18W, PS concentration was 0.02 mol/L, the dosage of CoFe 2 O 4 @rGO was 0.2 g/L, the initial pH of solution was 6, 90% and 96.1% NO were oxidized to nitric acid under 45℃ and 70℃ respectively. Finally, CoFe 2 O 4 @rGO was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), BET specific surface area and hysteresis cycle, and the denitrification mechanism of photo-assisted CoFe 2 O 4 /rGO activated PS was speculated. UV CoFe2O4@rGO༛NO flue gas catalyst Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Published Journal Publication published 30 Oct, 2025 Read the published version in Journal of Porous Materials → Version 1 posted Editorial decision: Revision requested 06 Sep, 2025 Reviews received at journal 30 Aug, 2025 Reviewers agreed at journal 19 Aug, 2025 Reviews received at journal 17 Aug, 2025 Reviewers agreed at journal 13 Aug, 2025 Reviewers invited by journal 12 Aug, 2025 Editor assigned by journal 05 Aug, 2025 Submission checks completed at journal 05 Aug, 2025 First submitted to journal 04 Aug, 2025 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. 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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-7288946","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":502434564,"identity":"e9e2fe25-5bd5-4668-a795-87723123625d","order_by":0,"name":"Xiaoying Ma","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAt0lEQVRIiWNgGAWjYDADfmbmww9I0yLZzpZmQJoWg/M8ChJEqTRnP3zsMW/b4WjjwzwMBgw1NtEEtVj2pKUb87al5W47zHvgAcOxtNwGgu65wWMmzdtmA9TCl2DA2HCYGC3834BaJHI3N/MYSBCphYcNbMsGZqK1nEkzN5xzLi13xmFgICcQ5Zfjh589eFN2OLe///DhBx9qbAhrAQI2BkY2KDOBCOUQLQx/iFQ6CkbBKBgFIxMAAEFwPOBwpCgWAAAAAElFTkSuQmCC","orcid":"","institution":"North China Electric Power University","correspondingAuthor":true,"prefix":"","firstName":"Xiaoying","middleName":"","lastName":"Ma","suffix":""},{"id":502434565,"identity":"59a7ebd3-4914-420f-815f-982c2707cee0","order_by":1,"name":"Xiangxue Wang","email":"","orcid":"","institution":"North China Electric Power University","correspondingAuthor":false,"prefix":"","firstName":"Xiangxue","middleName":"","lastName":"Wang","suffix":""},{"id":502434566,"identity":"c2a2e236-1da2-48ab-9b0f-ac8e8987862e","order_by":2,"name":"Shuangchen Ma","email":"","orcid":"","institution":"North China Electric Power University","correspondingAuthor":false,"prefix":"","firstName":"Shuangchen","middleName":"","lastName":"Ma","suffix":""}],"badges":[],"createdAt":"2025-08-04 08:53:21","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-7288946/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-7288946/v1","draftVersion":[],"editorialEvents":[{"content":"https://doi.org/10.1007/s10934-025-01866-y","type":"published","date":"2025-10-30T15:57:04+00:00"}],"editorialNote":"","failedWorkflow":false,"files":[{"id":95040059,"identity":"6487edbe-bc7a-43ec-aded-36702de3696e","added_by":"auto","created_at":"2025-11-03 16:08:13","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":857251,"visible":true,"origin":"","legend":"","description":"","filename":"JournalofPorousMaterialsPSNO.pdf","url":"https://assets-eu.researchsquare.com/files/rs-7288946/v1_covered_aa916d0a-0378-4e92-baeb-3f2f25610e8f.pdf"}],"financialInterests":"No competing interests reported.","formattedTitle":"Activation of low concentration persulfate with CoFe 2 O 4 @rGO under UV radiation to efficiently remove NO from flue gas","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":false,"hideJournal":false,"highlight":"","institution":"","isAcceptedByJournal":true,"isAuthorSuppliedPdf":true,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":false,"isPdf":true,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"[email protected]","identity":"journal-of-porous-materials","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":false,"externalIdentity":"jopo","sideBox":"Learn more about [Journal of Porous Materials](http://link.springer.com/journal/10934)","snPcode":"10934","submissionUrl":"https://submission.nature.com/new-submission/10934/3","title":"Journal of Porous Materials","twitterHandle":"","acdcEnabled":true,"dfaEnabled":true,"editorialSystem":"em","reportingPortfolio":"Springer Hybrid","inReviewEnabled":true,"inReviewRevisionsEnabled":false},"keywords":"UV, CoFe2O4@rGO༛NO, flue gas, catalyst","lastPublishedDoi":"10.21203/rs.3.rs-7288946/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-7288946/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eActivating low concentration persulfate (PS) to realize high-efficiency oxidation of NO is the key to reduce the cost of denitration by PS. In this paper, cobalt ferrite anchored reduced graphene oxide (CoFe\u003csub\u003e2\u003c/sub\u003eO\u003csub\u003e4\u003c/sub\u003e@rGO) was prepared by hydrothermal synthesis, and coupled with ultraviolet light (UV) was used to activate low concentration PS to oxidize and absorb NO in flue gas. The study found that UV irradiation significantly improved the catalytic performance of CoFe\u003csub\u003e2\u003c/sub\u003eO\u003csub\u003e4\u003c/sub\u003e@rGO, and the greater UV power, the higher the denitration efficiency. It can not only activate PS, but also reduce the recombination probability of photoelectrons and holes of CoFe\u003csub\u003e2\u003c/sub\u003eO\u003csub\u003e4\u003c/sub\u003e. With the aid of the oxidation ability of surface holes and the super electron transfer ability of rGO, the high-efficiency denitration of low-concentration PS is realized. When the UV was 18W, PS concentration was 0.02 mol/L, the dosage of CoFe\u003csub\u003e2\u003c/sub\u003eO\u003csub\u003e4\u003c/sub\u003e@rGO was 0.2 g/L, the initial pH of solution was 6, 90% and 96.1% NO were oxidized to nitric acid under 45℃ and 70℃ respectively. 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