Amine-Functionalized Cellulose-Chitosan Composites as an Efficient Adsorbent for CO 2 Capture

Amine-Functionalized Cellulose-Chitosan Composites as an Efficient Adsorbent for CO 2 Capture | 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 Article Amine-Functionalized Cellulose-Chitosan Composites as an Efficient Adsorbent for CO 2 Capture Sara Panahi, Farshad Rahimpour, Ahad Ghaemi This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-6581021/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 research explores the synthesis and evaluation of amine-functionalized cellulose-chitosan composites for efficient CO2 capture. The composites were synthesized by incorporating tetraethylenepentamine (TEPA) onto cellulose, followed by blending with chitosan. The resulting materials were characterized using FTIR, XRD, BET analysis, and FESEM, confirming successful functionalization and mesoporous structure. Optimization experiments revealed that an amine loading of 15 wt% TEPA provided the highest adsorption efficiency. Additionally, a 3:1 ratio of Ce-TEPA15% to chitosan yielded maximum CO2 uptake, benefiting from enhanced interactions provided by chitosan functional groups. The optimized Ce3-TEPA15%/Cs1 composite demonstrated superior performance, achieving a maximum CO2 adsorption capacity of 358.44 mg g-1 at 9 bar. The adsorption behavior was modeled using both Freundlich and fractional-order models, indicating favorable adsorption conditions. Additionally, the composites demonstrated excellent recyclability, maintaining 92% of their initial adsorption capacity after ten cycles. These results highlight the potential of amine-functionalized cellulose-chitosan composites as sustainable, high-performance materials for CO2 sequestration. Future research should focus on scaling up these composites for industrial CO2 capture applications. Earth and environmental sciences/Environmental sciences/Environmental chemistry Physical sciences/Engineering/Chemical engineering Cellulose Chitosan Tetraethylenepentamine CO2 Capture Adsorption 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. 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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-6581021","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":454427662,"identity":"ff910ca6-f7df-4f1e-ac06-e4d16b574589","order_by":0,"name":"Sara Panahi","email":"","orcid":"","institution":"Razi University","correspondingAuthor":false,"prefix":"","firstName":"Sara","middleName":"","lastName":"Panahi","suffix":""},{"id":454427663,"identity":"cb7e7614-10cc-46e3-9e7d-aeb032c5607c","order_by":1,"name":"Farshad Rahimpour","email":"","orcid":"","institution":"Razi University","correspondingAuthor":false,"prefix":"","firstName":"Farshad","middleName":"","lastName":"Rahimpour","suffix":""},{"id":454427664,"identity":"9b9f8fe8-c51e-4d5e-b9ea-87c2d3311d95","order_by":2,"name":"Ahad Ghaemi","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA1ElEQVRIiWNgGAWjYFACHhAhIccG47PhVoqqxRiokrGBFC0MiQ0wLQQBf//agx8+5lik90mkP3/AUGPHwCd9AL8WiRvvkiVnbpPIbZPIMWxgOJbMwMaXQMCaG2cMpHkhWoAOYzvAwMZDQIf8jTPGv/9uk0hnk0h/2MDwjwgtBud7zKQZt0kksEkkGDYwthGhxfAGj5ll7zYJwzaeN4YzEvuSeQhqkTt/xvjGz2118vLt6Q8+fPhmJyffQ0ALg0QCEicBFk14Af8BwmpGwSgYBaNghAMABKw68LruZoAAAAAASUVORK5CYII=","orcid":"","institution":"Iran University of Science and Technology","correspondingAuthor":true,"prefix":"","firstName":"Ahad","middleName":"","lastName":"Ghaemi","suffix":""}],"badges":[],"createdAt":"2025-05-02 22:23:10","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-6581021/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-6581021/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":83137847,"identity":"e1ed2a31-0598-4e36-87a9-6c9bf695eed8","added_by":"auto","created_at":"2025-05-20 11:39:07","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":1786156,"visible":true,"origin":"","legend":"","description":"","filename":"Panadi1440211.pdf","url":"https://assets-eu.researchsquare.com/files/rs-6581021/v1_covered_44d0d87c-303d-4de9-a9ad-56c01f0ab37d.pdf"}],"financialInterests":"No competing interests reported.","formattedTitle":"Amine-Functionalized Cellulose-Chitosan Composites as an Efficient Adsorbent for CO 2 Capture","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":"Cellulose, Chitosan, Tetraethylenepentamine, CO2 Capture, Adsorption","lastPublishedDoi":"10.21203/rs.3.rs-6581021/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-6581021/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"This research explores the synthesis and evaluation of amine-functionalized cellulose-chitosan composites for efficient CO2 capture. 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