In-situ engineering carboxyl in donor-acceptor polymers via photothermal synergetic system towards highly efficient H2O2 synthesis

In-situ engineering carboxyl in donor-acceptor polymers via photothermal synergetic system towards highly efficient H2O2 synthesis | 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 In-situ engineering carboxyl in donor-acceptor polymers via photothermal synergetic system towards highly efficient H2O2 synthesis Dongting Yue, Yuanjie Peng, Jiahong Lin, Jiacheng Gong, Mengxiang Zhu, and 8 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-5392317/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 Artificial photosynthesis of hydrogen peroxide (H2O2) from abundant lake or seawater via inexpensive, stable, and safe processes involving sunlight provides a sustainable path to carbon neutrality. We report a novel photo- and thermocatalytic synergism resulting from benzoxazine-aminophenol units crosslinked into aminophenol-formaldehyde (APF) polymers with H2O2 production rates achieving to 3216 μmol·g-1·h-1 from pure water saturated with oxygen. The carboxyl (O═C─OH) groups can be in-situ induced into APF during the initial stage and remained stable during the long-term photothermal process. These induced O═C─OH groups tuned the donor–acceptor (D–A) structures, which created more D–A couples, narrowed the bandgap for exciton dissociation, and reduced the energy barrier for H2O2 production. With the help of a concentrated solar light source, thermos assisted photocatalytic system can harvest the infrared light in sunlight, which provided H2O2 production rates of 14756 and 12094 μmol·g-1 (fresh water and seawater), further promoting the large-scale implementation. Physical sciences/Chemistry/Polymer chemistry Physical sciences/Materials science/Materials for energy and catalysis Full Text Additional Declarations There is NO Competing Interest. Supplementary Files SupportingInformation.docx Supporting Information 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. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. 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