Charging Dynamic of Graphene Oxide-Water Interface Dominated by Sulfate Groups

Charging Dynamic of Graphene Oxide-Water Interface Dominated by Sulfate Groups | 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 Charging Dynamic of Graphene Oxide-Water Interface Dominated by Sulfate Groups Mohsen Moazzami Gudarzi, Ali Sanjari, Mohammad Hosseini, Seyed Hamed Aboutalebi This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-4683075/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 Graphene oxide (GO) has emerged as a versatile and technologically significant 2D material due to its chemical flexibility, allowing for sophisticated structural manipulation and efficient exfoliation from graphite oxide. Despite its extensive applications, the inconsistency in various aspects of GO processing, arising from unidentified factors that impact the precise chemical structure of GO, has significantly stalled progress in the field. Herein we show that the often-overlooked organosulfate groups play a decisive role throughout the entire GO lifecycle. Their influence extends from governing charging behaviour and self-assembly to impacting material properties, which in turn affect storage, processing, and applications. Detailed elemental analysis combined with modelling results reveal a high surface charge density, explaining the spontaneous exfoliation observed in widely used methods. Understanding the chemistry of GO enables us to tailor synthesis for enhanced material stability and ionic conductivity. Our results shed light on the electrical double layer around atomically thin membranes, paving the way for further exploration into 2D polyelectrolytes. Physical sciences/Nanoscience and technology/Graphene/Synthesis of graphene Physical sciences/Materials science/Soft materials/Colloids Physical sciences/Engineering/Chemical engineering Physical sciences/Materials science/Nanoscale materials/Two-dimensional materials Physical sciences/Chemistry/Materials chemistry/Graphene/Synthesis of graphene Full Text Additional Declarations There is NO Competing Interest. Supplementary Files NatureCommS.I.docx 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. 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-4683075","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":328300788,"identity":"264635d9-6f1b-44e6-8279-6ab361890446","order_by":0,"name":"Mohsen Moazzami 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