Green Synthesis of Nickel Oxide Nano particles from Lawasonia inermis leaf extract for promising Methyl red Uptake and Efficient Iodine Adsorption

Green Synthesis of Nickel Oxide Nano particles from Lawasonia inermis leaf extract for promising Methyl red Uptake and Efficient Iodine Adsorption | 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 Green Synthesis of Nickel Oxide Nano particles from Lawasonia inermis leaf extract for promising Methyl red Uptake and Efficient Iodine Adsorption Rimsha Khalid, Saqlain Raza, Isham Areej, Faiza Ashraf, Amin Abid This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-4439351/v1 This work is licensed under a CC BY 4.0 License Status: Under Review Version 1 posted 3 You are reading this latest preprint version Abstract Water pollution is the threat to the survival of life on mother earth but due to industrialization clean reservoirs of water deteriorated day by day which demands eco-friendly, cheap and highly efficient methods to counter this issue. So due to this pressing ultimatum nickel oxide (NiO) nanoparticles are synthesized with Lawasonia inermis as a reducing and capping agent. Green-synthesized NiO-NPs are analysed by X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR) and energy dispersive x-ray (EDX). In this study, synthesized NiO-NPs are used to remove methyl red (MR) and radioactive iodine from polluted water. The maximum adsorption efficiency of methyl red is 89% at contact time 120 minutes, pH 5.0, temperature 10 0 C and adsorbent dose of 1 g. The percentage adsorption by weight of NiO nanoparticles for radioactive iodine is 225%. The adsorption capacity was calculated 4.58 mgg − 1 for methyl red at optimum conditions. Langmuir, Freundlich, Temkin, and Dubinin-Radushkevich adsorption isotherms are studied, and the experimental data suggests that Langmuir isotherms are best fit with R 2 = 0.996. According to a kinetic analysis, the pseudo 2 ND order kinetic model best fits the adsorption mechanism having R 2 = 0.993 A thermodynamic study shows the current process is spontaneous and endothermic, where Gibbs free energy (ΔG), enthalpy change (ΔH) and entropy change (ΔS) were − 5.9461 kjmol − 1 , 33.04 kjmol − 1 and 0.00338 kjmol − 1 K − 1 , respectively. NiO NPs contribute to the degradation of methyl red with minimal resource utilization with promising efficiency. Additionally, in the future, it may be used for the degradation of other environmental contaminants. Graphical abstract of synthesis and application of NiO-NPs Nickel oxide nanoparticles (NiO-NPs) Lawsonia inermis Methyl red (MR) Radioactive iodine Adsorption Isotherm Kinetic Full Text Additional Declarations No competing interests reported. Supplementary Files Supplementaryfilenanoparticleresearch.docx Cite Share Download PDF Status: Under Review Version 1 posted Editor assigned by journal 21 May, 2024 Submission checks completed at journal 21 May, 2024 First submitted to journal 18 May, 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. 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-4439351","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":305183805,"identity":"eb891e68-21b4-4912-a4b3-6abd9785e5a1","order_by":0,"name":"Rimsha Khalid","email":"","orcid":"","institution":"University of Sahiwal","correspondingAuthor":false,"prefix":"","firstName":"Rimsha","middleName":"","lastName":"Khalid","suffix":""},{"id":305183807,"identity":"7525cc0b-cde5-4d71-a48f-5b988e9f581c","order_by":1,"name":"Saqlain Raza","email":"","orcid":"","institution":"University of 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Hybrid","inReviewEnabled":true,"inReviewRevisionsEnabled":false},"keywords":"Nickel oxide nanoparticles (NiO-NPs), Lawsonia inermis, Methyl red (MR), Radioactive iodine, Adsorption, Isotherm, Kinetic","lastPublishedDoi":"10.21203/rs.3.rs-4439351/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-4439351/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eWater pollution is the threat to the survival of life on mother earth but due to industrialization clean reservoirs of water deteriorated day by day which demands eco-friendly, cheap and highly efficient methods to counter this issue. So due to this pressing ultimatum nickel oxide (NiO) nanoparticles are synthesized with \u003cem\u003eLawasonia inermis\u003c/em\u003e as a reducing and capping agent. Green-synthesized NiO-NPs are analysed by X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR) and energy dispersive x-ray (EDX). In this study, synthesized NiO-NPs are used to remove methyl red (MR) and radioactive iodine from polluted water. The maximum adsorption efficiency of methyl red is 89% at contact time 120 minutes, pH 5.0, temperature 10 \u003csup\u003e0\u003c/sup\u003eC and adsorbent dose of 1 g. The percentage adsorption by weight of NiO nanoparticles for radioactive iodine is 225%. The adsorption capacity was calculated 4.58 mgg\u003csup\u003e\u0026minus;\u0026thinsp;1\u003c/sup\u003e for methyl red at optimum conditions. Langmuir, Freundlich, Temkin, and Dubinin-Radushkevich adsorption isotherms are studied, and the experimental data suggests that Langmuir isotherms are best fit with R\u003csup\u003e2\u003c/sup\u003e\u0026thinsp;=\u0026thinsp;0.996. According to a kinetic analysis, the pseudo 2\u003csup\u003eND\u003c/sup\u003e order kinetic model best fits the adsorption mechanism having R\u003csup\u003e2\u003c/sup\u003e\u0026thinsp;=\u0026thinsp;0.993 A thermodynamic study shows the current process is spontaneous and endothermic, where Gibbs free energy (ΔG), enthalpy change (ΔH) and entropy change (ΔS) were \u0026minus;\u0026thinsp;5.9461 kjmol\u003csup\u003e\u0026minus;\u0026thinsp;1\u003c/sup\u003e, 33.04 kjmol\u003csup\u003e\u0026minus;\u0026thinsp;1\u003c/sup\u003e and 0.00338 kjmol\u003csup\u003e\u0026minus;\u0026thinsp;1\u003c/sup\u003eK\u003csup\u003e\u0026minus;\u0026thinsp;1\u003c/sup\u003e, respectively. NiO NPs contribute to the degradation of methyl red with minimal resource utilization with promising efficiency. 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