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Here, single\u2010atom Au\n                    <jats:sub>1<\/jats:sub>\n                    Cu alloys are synthesized with enhanced localized surface plasmon resonance (LSPR) effects. A strong chemical interaction is probed as electron transfer from the atomic Au site to the adjacent Cu host, giving rise to electron rearrangement and an upshift of the\n                    <jats:italic>d<\/jats:italic>\n                    band center toward the Fermi level of Cu nanoparticles. As a result, the high electron occupancy state in Au\n                    <jats:sub>1<\/jats:sub>\n                    Cu alloy is excited to abundant hot charge carriers under illumination. The catalyst with an optimal amount of gold dopants delivers an excellent ethanol yield of 940\u00a0\u00b5mol g\n                    <jats:sub>Au<\/jats:sub>\n                    <jats:sup>\u22121<\/jats:sup>\n                    h\n                    <jats:sup>\u22121<\/jats:sup>\n                    and a selectivity of 92.5% with outstanding stability exceeding 100\u00a0h. The structure\u2010reactivity correlation and mechanism studies reveal that the LSPR effect induced by the doping of single\u2010atom Au not only enhances light adsorption but also improves the accumulation of\n                    <jats:sup>*<\/jats:sup>\n                    CO intermediates, which accounts for the reduced energy barrier for C\u2500C coupling toward ethanol formation.\n                  <\/jats:p>","DOI":"10.1002\/smll.202505626","type":"journal-article","created":{"date-parts":[[2025,7,9]],"date-time":"2025-07-09T15:36:22Z","timestamp":1752075382000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Localized Surface Plasmon Resonance in Single\u2010Atom Au\n                    <sub>1<\/sub>\n                    Cu Alloy Promotes Asymmetrical C\u2500C Coupling for CO\n                    <sub>2<\/sub>\n                    Photoreduction to Ethanol"],"prefix":"10.1002","volume":"21","author":[{"given":"Ke","family":"Wang","sequence":"first","affiliation":[{"name":"College of Chemical and Biological Engineering Zhejiang University  Hangzhou 310058 China"},{"name":"Institute of Zhejiang University\u2010Quzhou  Quzhou 324000 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xu","family":"Quan","sequence":"additional","affiliation":[{"name":"College of Chemical and Biological Engineering Zhejiang University  Hangzhou 310058 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ning","family":"Cao","sequence":"additional","affiliation":[{"name":"College of Chemical and Biological Engineering Zhejiang University  Hangzhou 310058 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ying","family":"Bao","sequence":"additional","affiliation":[{"name":"Department of Chemistry Western Washington University  Bellingham WA 98225 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