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In this study, an iron\u2010nitrogen\u2010carbon (Fe\u2500N\u2500C) catalyst is intentionally designed through a carbon\u2010thermal\u2010diffusion strategy, exposing extensively the carbon\u2010defective Fe\u2500N\n                    <jats:sub>4<\/jats:sub>\n                    sites within a micro\u2010mesoporous carbon matrix. The optimization of Fe\u2500N\n                    <jats:sub>4<\/jats:sub>\n                    sites results in exceptional catalytic ozonation efficiency, surpassing that of intact Fe\u2500N\n                    <jats:sub>4<\/jats:sub>\n                    sites and commercial MnO\n                    <jats:sub>2<\/jats:sub>\n                    by 10 and 312 times, respectively. Theoretical calculations and experimental data demonstrated that carbon\u2010defect engineering induces selective cleavage of C\u2500N bond neighboring the Fe\u2500N\n                    <jats:sub>4<\/jats:sub>\n                    motif. This induces an increase in non\u2010uniform charges and Fermi density, leading to elevated energy levels at the center of Fe\n                    <jats:italic>d<\/jats:italic>\n                    \u2010band. Compared to the intact atomic configuration, carbon\u2010defective Fe\u2500N\n                    <jats:sub>4<\/jats:sub>\n                    site is more activated to strengthen the interaction with O\n                    <jats:sub>3<\/jats:sub>\n                    and weaken the O\u2500O bond, thereby reducing the barriers for highly active surface atomic oxygen (*O\/*OO), ultimately achieving efficient oxidation of CH\n                    <jats:sub>3<\/jats:sub>\n                    SH and its intermediates. This research not only offers a viable approach to enhance the catalytic ozonation activity of M\u2500N\u2500C but also advances the fundamental comprehension of how periphery carbon environment influences the characteristics and efficacy of M\u2500N\n                    <jats:sub>4<\/jats:sub>\n                    sites.\n                  <\/jats:p>","DOI":"10.1002\/smll.202311879","type":"journal-article","created":{"date-parts":[[2024,3,10]],"date-time":"2024-03-10T15:59:18Z","timestamp":1710086358000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":20,"title":["Optimization of Carbon\u2010Defect Engineering to Boost Catalytic Ozonation Efficiency of Single Fe\u2500N\n                    <sub>4<\/sub>\n                    Coordination Motif"],"prefix":"10.1002","volume":"20","author":[{"given":"Wei","family":"Qu","sequence":"first","affiliation":[{"name":"School of Environmental Science and Engineering Guangdong Provincial 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