{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,30]],"date-time":"2026-10-30T23:23:27Z","timestamp":1793402607640,"version":"4.5.0"},"reference-count":56,"publisher":"National Academy of Sciences","issue":"30","license":[{"start":{"date-parts":[[2023,7,17]],"date-time":"2023-07-17T00:00:00Z","timestamp":1689552000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001809","name":"MOST | National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["52192684"],"award-info":[{"award-number":["52192684"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001809","name":"MOST | National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["51821006"],"award-info":[{"award-number":["51821006"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["www.pnas.org"],"crossmark-restriction":true},"short-container-title":["Proc. Natl. Acad. Sci. U.S.A."],"published-print":{"date-parts":[[2023,7,25]]},"abstract":"<jats:p>\n                    Singlet oxygen (\n                    <jats:sup>1<\/jats:sup>\n                    O\n                    <jats:sub>2<\/jats:sub>\n                    ) plays a pivotal role in numerous catalytic oxidation processes utilized in water purification and chemical synthesis. The spin-trapping method based on electron paramagnetic resonance (EPR) analysis is commonly employed for\n                    <jats:sup>1<\/jats:sup>\n                    O\n                    <jats:sub>2<\/jats:sub>\n                    detection. However, it is often limited to time-independent acquisition. Recent studies have raised questions about the reliability of the\n                    <jats:sup>1<\/jats:sup>\n                    O\n                    <jats:sub>2<\/jats:sub>\n                    trapper, 2,2,6,6-tetramethylpiperidine (TEMP), in various systems. In this study, we introduce a comprehensive, kinetic examination to monitor the spin-trapping process in EPR analysis. The EPR intensity of the trapping product was used as a quantitative measurement to evaluate the concentration of\n                    <jats:sup>1<\/jats:sup>\n                    O\n                    <jats:sub>2<\/jats:sub>\n                    in aqueous systems. This in situ kinetic study was successfully applied to a classical photocatalytic system with exceptional accuracy. Furthermore, we demonstrated the feasibility of our approach in more intricate\n                    <jats:sup>1<\/jats:sup>\n                    O\n                    <jats:sub>2<\/jats:sub>\n                    -driven catalytic oxidation processes for water decontamination and elucidated the molecular mechanism of direct TEMP oxidation. This method can avoid the false-positive results associated with the conventional 2D\n                    <jats:sup>1<\/jats:sup>\n                    O\n                    <jats:sub>2<\/jats:sub>\n                    detection techniques, and provide insights into the reaction mechanisms in\n                    <jats:sup>1<\/jats:sup>\n                    O\n                    <jats:sub>2<\/jats:sub>\n                    -dominated catalytic oxidation processes. This work underscores the necessity of kinetic studies for spin-trapping EPR analysis, presenting an avenue for a comprehensive exploration of the mechanisms governing catalytic oxidation processes.\n                  <\/jats:p>","DOI":"10.1073\/pnas.2305706120","type":"journal-article","created":{"date-parts":[[2023,7,17]],"date-time":"2023-07-17T15:12:34Z","timestamp":1689606754000},"update-policy":"https:\/\/doi.org\/10.1073\/pnas.cm10313","source":"Crossref","is-referenced-by-count":203,"title":["Unveiling singlet oxygen spin trapping in catalytic oxidation processes using in situ kinetic EPR analysis"],"prefix":"10.1073","volume":"120","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-8087-8440","authenticated-orcid":false,"given":"Jing-Hang","family":"Wu","sequence":"first","affiliation":[{"name":"Department of Environmental Science and Engineering, Chinese Academy of Sciences Key Laboratory of Urban Pollutant Conversion, University of Science and Technology of China, Hefei 230026, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9116-6406","authenticated-orcid":false,"given":"Fei","family":"Chen","sequence":"additional","affiliation":[{"name":"Department of Environmental Science and Engineering, Chinese Academy of Sciences Key Laboratory of Urban Pollutant Conversion, University of Science and Technology of China, Hefei 230026, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tian-Hao","family":"Yang","sequence":"additional","affiliation":[{"name":"Department of Environmental Science and Engineering, Chinese Academy of Sciences Key Laboratory of Urban Pollutant Conversion, University of Science and Technology of China, Hefei 230026, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5247-6244","authenticated-orcid":false,"given":"Han-Qing","family":"Yu","sequence":"additional","affiliation":[{"name":"Department of Environmental 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