Intrinsic Engineered Stark and Plasmonic synergistic fields at Quercetin Alumina doped TiO2 interfaces for Ultrafast Photocatalytic Oil Degradation in Soil

Intrinsic Engineered Stark and Plasmonic synergistic fields at Quercetin Alumina doped TiO2 interfaces for Ultrafast Photocatalytic Oil Degradation in Soil | 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 Intrinsic Engineered Stark and Plasmonic synergistic fields at Quercetin Alumina doped TiO2 interfaces for Ultrafast Photocatalytic Oil Degradation in Soil Moses G. Udoisoh, Sozo Taylor-Harry This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-8561672/v1 This work is licensed under a CC BY 4.0 License Status: Under Review Version 1 posted 11 You are reading this latest preprint version Abstract Photocatalytic remediation of oil-contaminated soils using TiO₂ is fundamentally limited not by light absorption, but by inefficient charge separation. Strongly bound Frenkel excitons in bio-sensitized systems recombine rapidly under heterogeneous soil conditions, rendering them inaccessible to surface redox chemistry when static fields or plasmonic excitation act in isolation. Here, we develop a non-separable DC–AC Stark–plasmonic quantum framework that overcomes this bottleneck by demonstrating that cooperative coupling between intrinsic static interfacial fields and time-dependent plasmonic near-fields is essential for sustained photocatalytic activity in soil environments. The exciton dynamics in a Quercetin@Al:TiO₂ hybrid are modeled quantum mechanically using an asymmetric interfacial potential under periodic Stark modulation, with dissociation formulated as field-assisted tunneling into oxide continuum states within a Floquet–Sambe representation. Our analysis reveals that DC–AC coupling actively suppresses recombination, dynamically lowers exciton binding barriers, and sustains non-equilibrium populations of long-lived charge carriers precisely at oil–TiO₂ interfaces. This field-driven mechanism enhances the localized generation of reactive oxygen species and induces a decisive transition from recombination-limited to reaction-limited photocatalysis, even under the adsorption and transport constraints of soil matrices. The results culminate in a universal scaling law linking defect density and plasmonic amplitude to photocatalytic efficiency. This work provides the first theoretical framework for field-engineered exciton dissociation in a bio-hybrid photocatalyst, establishing a transformative design paradigm for high-efficiency, self-driven solar remediation technologies. Stark–Plasmonic Photocatalysis Quercetin–Al:TiO₂ Hybrid System Exciton Dissociation Floquet–Stark Field Synergy Field-Engineered Biohybrid Nanomaterials Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Under Review Version 1 posted Editorial decision: Revision requested 27 Mar, 2026 Reviews received at journal 23 Mar, 2026 Reviewers agreed at journal 22 Mar, 2026 Reviews received at journal 16 Feb, 2026 Reviewers agreed at journal 02 Feb, 2026 Reviewers agreed at journal 02 Feb, 2026 Reviewers invited by journal 21 Jan, 2026 Editor assigned by journal 21 Jan, 2026 Editor invited by journal 18 Jan, 2026 Submission checks completed at journal 16 Jan, 2026 First submitted to journal 16 Jan, 2026 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-8561672","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":578339202,"identity":"33b11070-ccea-45cc-a169-1930549793d5","order_by":0,"name":"Moses G. 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Soil","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":false,"hideJournal":false,"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":"discover-green-chemistry","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":false,"externalIdentity":"","sideBox":"Learn more about [Discover Green Chemistry](https://link.springer.com/journal/44509)","snPcode":"44509","submissionUrl":"https://submission.nature.com/new-submission/44509/3?_gl=1*101gs6x*_gcl_au*MTIwNjQ2NjkxNi4xNzUyNTgzNDgx*_ga*MjAwMTA4NDA0NS4xNzE2OTAwNjg2*_ga_B3E4QL2TPR*czE3NjAwNDAzNjEkbzg4JGcxJHQxNzYwMDQwNzQ5JGo1NCRsMCRoMjAxMjYzMDU3NA..","title":"Discover Green Chemistry","twitterHandle":"","acdcEnabled":true,"dfaEnabled":true,"editorialSystem":"stoa","reportingPortfolio":"Discover Series","inReviewEnabled":true,"inReviewRevisionsEnabled":true},"keywords":"Stark–Plasmonic Photocatalysis, Quercetin–Al:TiO₂ Hybrid System, Exciton Dissociation, Floquet–Stark Field Synergy, Field-Engineered Biohybrid Nanomaterials","lastPublishedDoi":"10.21203/rs.3.rs-8561672/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-8561672/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003ePhotocatalytic remediation of oil-contaminated soils using TiO₂ is fundamentally limited not by light absorption, but by inefficient charge separation. Strongly bound Frenkel excitons in bio-sensitized systems recombine rapidly under heterogeneous soil conditions, rendering them inaccessible to surface redox chemistry when static fields or plasmonic excitation act in isolation.\u003c/p\u003e \u003cp\u003eHere, we develop a non-separable DC\u0026ndash;AC Stark\u0026ndash;plasmonic quantum framework that overcomes this bottleneck by demonstrating that cooperative coupling between intrinsic static interfacial fields and time-dependent plasmonic near-fields is essential for sustained photocatalytic activity in soil environments. The exciton dynamics in a Quercetin@Al:TiO₂ hybrid are modeled quantum mechanically using an asymmetric interfacial potential under periodic Stark modulation, with dissociation formulated as field-assisted tunneling into oxide continuum states within a Floquet\u0026ndash;Sambe representation. Our analysis reveals that DC\u0026ndash;AC coupling actively suppresses recombination, dynamically lowers exciton binding barriers, and sustains non-equilibrium populations of long-lived charge carriers precisely at oil\u0026ndash;TiO₂ interfaces. This field-driven mechanism enhances the localized generation of reactive oxygen species and induces a decisive transition from recombination-limited to reaction-limited photocatalysis, even under the adsorption and transport constraints of soil matrices. The results culminate in a universal scaling law linking defect density and plasmonic amplitude to photocatalytic efficiency. This work provides the first theoretical framework for field-engineered exciton dissociation in a bio-hybrid photocatalyst, establishing a transformative design paradigm for high-efficiency, self-driven solar remediation technologies.\u003c/p\u003e","manuscriptTitle":"Intrinsic Engineered Stark and Plasmonic synergistic fields at Quercetin Alumina doped TiO2 interfaces for Ultrafast Photocatalytic Oil Degradation in Soil","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2026-01-23 04:42:39","doi":"10.21203/rs.3.rs-8561672/v1","editorialEvents":[{"type":"communityComments","content":0},{"type":"decision","content":"Revision requested","date":"2026-03-27T04:50:32+00:00","index":"","fulltext":""},{"type":"editorInvitedReview","content":"","date":"2026-03-23T17:27:12+00:00","index":"hide","fulltext":""},{"type":"reviewerAgreed","content":"163340204003949479336503524121887568884","date":"2026-03-22T21:30:03+00:00","index":"hide","fulltext":""},{"type":"editorInvitedReview","content":"","date":"2026-02-16T21:01:47+00:00","index":"hide","fulltext":""},{"type":"reviewerAgreed","content":"260447235185913023914821308327270642338","date":"2026-02-02T15:59:21+00:00","index":"hide","fulltext":""},{"type":"reviewerAgreed","content":"271060709443413933420024154250554944590","date":"2026-02-02T15:24:00+00:00","index":"hide","fulltext":""},{"type":"reviewersInvited","content":"","date":"2026-01-21T19:38:41+00:00","index":"","fulltext":""},{"type":"editorAssigned","content":"","date":"2026-01-21T10:08:39+00:00","index":"","fulltext":""},{"type":"editorInvited","content":"","date":"2026-01-19T04:32:53+00:00","index":"","fulltext":""},{"type":"checksComplete","content":"","date":"2026-01-16T05:21:15+00:00","index":"","fulltext":""},{"type":"submitted","content":"Discover Green Chemistry","date":"2026-01-16T05:10:19+00:00","index":"","fulltext":""}],"status":"published","journal":{"display":true,"email":"[email protected]","identity":"discover-green-chemistry","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":false,"externalIdentity":"","sideBox":"Learn more about [Discover Green Chemistry](https://link.springer.com/journal/44509)","snPcode":"44509","submissionUrl":"https://submission.nature.com/new-submission/44509/3?_gl=1*101gs6x*_gcl_au*MTIwNjQ2NjkxNi4xNzUyNTgzNDgx*_ga*MjAwMTA4NDA0NS4xNzE2OTAwNjg2*_ga_B3E4QL2TPR*czE3NjAwNDAzNjEkbzg4JGcxJHQxNzYwMDQwNzQ5JGo1NCRsMCRoMjAxMjYzMDU3NA..","title":"Discover Green Chemistry","twitterHandle":"","acdcEnabled":true,"dfaEnabled":true,"editorialSystem":"stoa","reportingPortfolio":"Discover Series","inReviewEnabled":true,"inReviewRevisionsEnabled":true}}],"origin":"","ownerIdentity":"d9561c92-734c-4e5d-af0d-ea1b9bac8d1d","owner":[],"postedDate":"January 23rd, 2026","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"under-review","subjectAreas":[],"tags":[],"updatedAt":"2026-04-28T07:53:33+00:00","versionOfRecord":[],"versionCreatedAt":"2026-01-23 04:42:39","video":"","vorDoi":"","vorDoiUrl":"","workflowStages":[]},"version":"v1","identity":"rs-8561672","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-8561672","identity":"rs-8561672","version":["v1"]},"buildId":"XKTyCvWXoU3ODBz1xrDgd","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}