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Adv."],"published-print":{"date-parts":[[2026,8,21]]},"abstract":"<jats:p>\n                    Photocatalytic CO\n                    <jats:sub>2<\/jats:sub>\n                    reduction to multi-carbon products like ethanol remains challenging. We report a porous liquid (PL) system, PL(Cu-Cu\n                    <jats:sub>2<\/jats:sub>\n                    O@NU), driving selective CO\n                    <jats:sub>2<\/jats:sub>\n                    -to-ethanol conversion. It features Cu\n                    <jats:sup>0<\/jats:sup>\n                    \/Cu\n                    <jats:sup>+<\/jats:sup>\n                    dual sites in NH\n                    <jats:sub>2<\/jats:sub>\n                    -UiO-66 (NU) hybridized with a methoxypolyethylene glycol-functionalized imidazolium ionic liquid (IL). This system facilitates C-C coupling via a triple enrichment mechanism: IL and NU synergistically enrich CO\n                    <jats:sub>2<\/jats:sub>\n                    , IL enriches electrons at Cu sites, and confined pores enrich intermediates. Consequently, PL(Cu-Cu\n                    <jats:sub>2<\/jats:sub>\n                    O@NU) achieves an 83.3 \u03bcmol\u00b7g\n                    <jats:sup>\u22121<\/jats:sup>\n                    \u00b7h\n                    <jats:sup>\u22121<\/jats:sup>\n                    ethanol yield with 95.2% selectivity, outperforming Cu-Cu\n                    <jats:sub>2<\/jats:sub>\n                    O@NU by 4.7-fold. Control experiments (showing no ethanol over isolated NU, IL, or Cu-Cu\n                    <jats:sub>2<\/jats:sub>\n                    O) directly validate this mechanism. Supplemental computations substantiate these findings: molecular dynamics confirm confined pores reduce *CO diffusion for enrichment, while density functional theory reveals lowered C-C coupling barriers. Furthermore, d-band upshifts enhance CO\n                    <jats:sub>2<\/jats:sub>\n                    -Cu overlap, and Cu\n                    <jats:sup>0<\/jats:sup>\n                    \/Cu\n                    <jats:sup>+<\/jats:sup>\n                    sites mediate the critical *CO\u00a0\u2192\u00a0*COCO transition. These integrated observations firmly establish PLs as robust confinement-driven platforms for selective CO\n                    <jats:sub>2<\/jats:sub>\n                    -to-C\n                    <jats:sub>2<\/jats:sub>\n                    <jats:sup>+<\/jats:sup>\n                    conversion.\n                  <\/jats:p>","DOI":"10.1126\/sciadv.aeg8278","type":"journal-article","created":{"date-parts":[[2026,8,19]],"date-time":"2026-08-19T17:59:26Z","timestamp":1787162366000},"update-policy":"https:\/\/doi.org\/10.34133\/aaas_crossmark","source":"Crossref","is-referenced-by-count":0,"title":["Photocatalytic CO\n                    <sub>2<\/sub>\n                    -to-ethanol conversion via multiple enrichment effects in porous liquids"],"prefix":"10.1126","volume":"12","author":[{"ORCID":"https:\/\/orcid.org\/0009-0002-6384-8060","authenticated-orcid":true,"given":"Qi","family":"Xu","sequence":"first","affiliation":[{"name":"State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816, P. R. China."},{"name":"College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, P. R. China."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6423-6707","authenticated-orcid":true,"given":"Yang","family":"Liu","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816, P. R. China."},{"name":"College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, P. R. China."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Huimin","family":"Wei","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816, P. R. China."},{"name":"College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, P. R. China."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jinshan","family":"Xu","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816, P. R. China."},{"name":"College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, P. R. China."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0180-373X","authenticated-orcid":true,"given":"Jiahui","family":"Kou","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816, P. R. China."},{"name":"College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, P. R. China."},{"name":"Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, Nanjing 211816, P. R. China."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6154-9716","authenticated-orcid":true,"given":"Hengming","family":"Huang","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816, P. R. China."},{"name":"College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, P. R. China."},{"name":"Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, Nanjing 211816, P. R. 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