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Herein, a novel carbon nitride material with a giant built\u2010in electric field (BEF), Trz\u2010CN, is synthesized through a hydrothermal\u2010calcination tandem strategy. The giant BEF (4.8\u2010fold) induced by the large dipole moment facilitated the efficient separation and directional migration of photogenerated carriers. Trz\u2010CN exhibited an H\n                    <jats:sub>2<\/jats:sub>\n                    O\n                    <jats:sub>2<\/jats:sub>\n                    production rate of 569.9 \u00b5mol\u00b7g\n                    <jats:sup>\u22121<\/jats:sup>\n                    \u00b7h\n                    <jats:sup>\u22121<\/jats:sup>\n                    using O\n                    <jats:sub>2<\/jats:sub>\n                    as feedstock under visible light (\n                    <jats:italic>\u03bb<\/jats:italic>\n                    &gt; 420\u00a0nm), marking an impressive 11.2\u2010fold enhancement compared to bulk C\n                    <jats:sub>3<\/jats:sub>\n                    N\n                    <jats:sub>4<\/jats:sub>\n                    . Utilizing air instead of pure O\n                    <jats:sub>2<\/jats:sub>\n                    as feedstock resulted in a trivial 1.6% decrease in the H\n                    <jats:sub>2<\/jats:sub>\n                    O\n                    <jats:sub>2<\/jats:sub>\n                    generation by Trz\u2010CN while maintaining a substantial production rate of 560.6 \u00b5mol\u00b7g\n                    <jats:sup>\u22121<\/jats:sup>\n                    \u00b7h\n                    <jats:sup>\u22121<\/jats:sup>\n                    . Notably, Trz\u2010CN showcased a sterilization rate of 99.9% against Escherichia coli (E. coli) in natural seawater. Density functional theory (DFT) calculations revealed that incorporating a nitrogen\u2010rich skeleton into the C\n                    <jats:sub>3<\/jats:sub>\n                    N\n                    <jats:sub>4<\/jats:sub>\n                    enhanced its oxygen adsorption capacity and lowered the energy barrier for H\n                    <jats:sub>2<\/jats:sub>\n                    O\n                    <jats:sub>2<\/jats:sub>\n                    formation. This leads to enhanced photocatalytic performance for H\n                    <jats:sub>2<\/jats:sub>\n                    O\n                    <jats:sub>2<\/jats:sub>\n                    generation under ambient air conditions. Trz\u2010CN provides a new exploratory idea for direct air synthesis of H\n                    <jats:sub>2<\/jats:sub>\n                    O\n                    <jats:sub>2<\/jats:sub>\n                    and ballast water treatment.\n                  <\/jats:p>","DOI":"10.1002\/smtd.202401347","type":"journal-article","created":{"date-parts":[[2025,2,14]],"date-time":"2025-02-14T06:50:25Z","timestamp":1739515825000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["The Direct Air Synthesis of Hydrogen Peroxide Induced by The Giant Built\u2010In Electric Field of Trz\u2010CN"],"prefix":"10.1002","volume":"9","author":[{"given":"Haoyang","family":"Ma","sequence":"first","affiliation":[{"name":"Department of Materials Science and Engineering, College of Transportation Engineering Dalian Maritime University  Dalian 116026 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