Photocatalytic activity of ZnO Doped Nano Hydroxyapatite/GO Derived from Waste Oyster Shells for Removal of Methylene Blue.

Photocatalytic activity of ZnO Doped Nano Hydroxyapatite/GO Derived from Waste Oyster Shells for Removal of Methylene Blue. | 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 Photocatalytic activity of ZnO Doped Nano Hydroxyapatite/GO Derived from Waste Oyster Shells for Removal of Methylene Blue. Vanitha Chinnaswamy, Sundara Ganeasan Mohan, Kuppusamy Muniyan Ramsamy, and 1 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-3696439/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 09 Jun, 2024 Read the published version in Environmental Science and Pollution Research → Version 1 posted 6 You are reading this latest preprint version Abstract Hydroxyapatite (HAp) stands as an inorganic compound, recognized as a non-toxic, bioactive ceramic, and its composition closely resembles that of bone material. In this study, nHAp was prepared from waste oyster shells, which are biowaste rich in calcium carbonate. nHAp with its unique catalytic property can be used as an adsorbent in various fields, including wastewater treatment. nHAp with an exceptional surface adsorbent with excellent chemical stability, enabling its catalytic function. Nano hydroxyapatite doped with Zinc oxide (ZnO) and made into a composite with Graphene oxide (GO) by modified hummers method followed by grinding, which has taken a 9:1 ratio of weight, which enhances tensile and mechanical strength. The as-synthesized nanocomposites are characterized by FTIR, XRD, SEM, TEM with EDS, and XPS techniques, whereas the UV-visible study shows the complete dye degradation efficiency of the prepared composites. In this work, the prepared nanocomposites nHAp/ZnO/GO were used for the adsorptive removal of MB dye in a batch process by varying the dosage from 0.1 to 0.5g and pH variation from 2–12 at different time intervals under a UV lamp. Adsorption of 99% removal of MB dye was observed, and pH = 12 is the most favorable. The as-prepared nanocomposite nHAp/ZnO/GO fits the kinetic rate constant equation and shows a pseudo-first-order reaction, and this study indicates the suitability and synergistic effect of the synthesized nanocomposite, which has a potential, socially active, low-cost-effective, eco-friendly and safe photocatalytic degradation of MB from wastewater. Hydroxyapatite Photocatalyst Methylene blue Degradation Full Text Cite Share Download PDF Status: Published Journal Publication published 09 Jun, 2024 Read the published version in Environmental Science and Pollution Research → Version 1 posted Editorial decision: Major Revision 29 Mar, 2024 Reviewers agreed at journal 04 Mar, 2024 Reviewers invited by journal 04 Mar, 2024 Editor invited by journal 07 Feb, 2024 Editor assigned by journal 17 Jan, 2024 First submitted to journal 09 Jan, 2024 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-3696439","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":276342351,"identity":"b8f02312-5bc6-4663-9292-1bba4893d592","order_by":0,"name":"Vanitha Chinnaswamy","email":"","orcid":"","institution":"RV Government Arts College, Chengalpat","correspondingAuthor":false,"prefix":"","firstName":"Vanitha","middleName":"","lastName":"Chinnaswamy","suffix":""},{"id":276342352,"identity":"198f3f41-7a53-4538-8fe9-5de7e90df869","order_by":1,"name":"Sundara Ganeasan Mohan","email":"","orcid":"","institution":"University of Madras - Guindy Campus","correspondingAuthor":false,"prefix":"","firstName":"Sundara","middleName":"Ganeasan","lastName":"Mohan","suffix":""},{"id":276342353,"identity":"3eb2e253-6366-4022-a935-c55a2171839b","order_by":2,"name":"Kuppusamy Muniyan Ramsamy","email":"","orcid":"","institution":"RV Government Arts College, Chengalpat","correspondingAuthor":false,"prefix":"","firstName":"Kuppusamy","middleName":"Muniyan","lastName":"Ramsamy","suffix":""},{"id":276342354,"identity":"093d7e17-03c1-4e8a-b3ed-f854da538cb8","order_by":3,"name":"Sridhar Tm","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA6UlEQVRIiWNgGAWjYLCCBLYDDAzs7QcfANk8fIRU88C18JxJNgAJsBGlhQGkRSLBTALMJqTFXuz4sw8Pyu7ImzckpFV+zbGTYWNgfvjoBj5bpHOMZySce2Y458DBY7dltyUDHcZmbJyDXwszQ2LbYcYZjA1ptyW3MQO18LBJ49eS/hikxX4GM4NZseS2emK0JBiDtCTOYGMwY/y47TARWm7nGDMknDucPIOHJ1macdtxHjZmAn5hn53+mPFH2WHbGfLPD378ua3anp+9+eFjfFpQADM4lpiJVQ4CjD9IUT0KRsEoGAUjBgAAOapFj2RDAY0AAAAASUVORK5CYII=","orcid":"https://orcid.org/0000-0002-9492-8322","institution":"University of Madras - Guindy Campus","correspondingAuthor":true,"prefix":"","firstName":"Sridhar","middleName":"","lastName":"Tm","suffix":""}],"badges":[],"createdAt":"2023-12-02 09:12:24","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-3696439/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-3696439/v1","draftVersion":[],"editorialEvents":[{"content":"https://doi.org/10.1007/s11356-024-33894-7","type":"published","date":"2024-06-10T00:34:23+00:00"}],"editorialNote":"","failedWorkflow":false,"files":[{"id":58080090,"identity":"1b8f9276-8fc5-4f4d-aee8-876bcd92b142","added_by":"auto","created_at":"2024-06-11 00:34:28","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":1559854,"visible":true,"origin":"","legend":"","description":"","filename":"VanithaCetal.pdf","url":"https://assets-eu.researchsquare.com/files/rs-3696439/v1_covered_e78ff215-4d7d-4245-a1cf-e35863d298de.pdf"}],"financialInterests":"","formattedTitle":"Photocatalytic activity of ZnO Doped Nano Hydroxyapatite/GO Derived from Waste Oyster Shells for Removal of Methylene Blue.","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":true,"isPdf":true,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"[email protected]","identity":"environmental-science-and-pollution-research","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":false,"externalIdentity":"espr","sideBox":"Learn more about [Environmental Science and Pollution Research](https://www.springer.com/journal/11356)","snPcode":"11356","submissionUrl":"https://submission.nature.com/new-submission/11356/3","title":"Environmental Science and Pollution Research","twitterHandle":"","acdcEnabled":true,"dfaEnabled":true,"editorialSystem":"em","reportingPortfolio":"Springer Hybrid","inReviewEnabled":true,"inReviewRevisionsEnabled":false},"keywords":"Hydroxyapatite, Photocatalyst, Methylene blue, Degradation","lastPublishedDoi":"10.21203/rs.3.rs-3696439/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-3696439/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eHydroxyapatite (HAp) stands as an inorganic compound, recognized as a non-toxic, bioactive ceramic, and its composition closely resembles that of bone material. In this study, nHAp was prepared from waste oyster shells, which are biowaste rich in calcium carbonate. nHAp with its unique catalytic property can be used as an adsorbent in various fields, including wastewater treatment. nHAp with an exceptional surface adsorbent with excellent chemical stability, enabling its catalytic function. Nano hydroxyapatite doped with Zinc oxide (ZnO) and made into a composite with Graphene oxide (GO) by modified hummers method followed by grinding, which has taken a 9:1 ratio of weight, which enhances tensile and mechanical strength. 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