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Cu\u2010based nanocatalysts can facilitate C\u2500C coupling for C\n                    <jats:sub>2+<\/jats:sub>\n                    product generation, yet their catalytic efficiency and selectivity require further improvement. In this study, a liquid\u2010liquid interface etching strategy is employed, using Cu nanocubes as templates and aqueous AgNO\n                    <jats:sub>3<\/jats:sub>\n                    as the etchant to synthesize well\u2010defined CuAg nanocomposites. Among these, the optimized Cu\n                    <jats:sub>67<\/jats:sub>\n                    Ag\n                    <jats:sub>33<\/jats:sub>\n                    composite nanocubes achieved a ethylene (C\n                    <jats:sub>2<\/jats:sub>\n                    H\n                    <jats:sub>4<\/jats:sub>\n                    ) Faraday efficiency (FE) of 43.90% and a partial current density of 21.50\u00a0mA cm\n                    <jats:sup>\u22122<\/jats:sup>\n                    at \u22121.50 V\n                    <jats:sub>RHE<\/jats:sub>\n                    . This work demonstrates a versatile approach to integrate secondary metal active sites via directional confined etching, while reconstructing catalytic interfaces to enhance C\u2500C coupling and C\n                    <jats:sub>2<\/jats:sub>\n                    H\n                    <jats:sub>4<\/jats:sub>\n                    selectivity. These findings provide a strategic framework for the rational design of efficient CO\n                    <jats:sub>2<\/jats:sub>\n                    RR catalysts, advancing the development of sustainable carbon conversion technologies.\n                  <\/jats:p>","DOI":"10.1002\/smll.202508803","type":"journal-article","created":{"date-parts":[[2025,10,3]],"date-time":"2025-10-03T19:36:17Z","timestamp":1759520177000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Liquid\u2010Liquid Interface \u2010Driven Reconstruction of CuAg Nanocomposites for Selective CO\n                    <sub>2<\/sub>\n                    to C\n                    <sub>2<\/sub>\n                    H\n                    <sub>4<\/sub>\n                    Electroreduction"],"prefix":"10.1002","volume":"21","author":[{"given":"Ji\u2010Long","family":"Sang","sequence":"first","affiliation":[{"name":"Hunan Joint International Research Center for Carbon Dioxide Resource Utilization School of Physics Central South University  Changsha Hunan 410083 People's Republic of China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shi\u2010Duo","family":"Zhang","sequence":"additional","affiliation":[{"name":"Hunan Joint International Research Center for Carbon Dioxide Resource Utilization School of Physics Central South University  Changsha Hunan 410083 People's Republic of China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Qing","family":"Liu","sequence":"additional","affiliation":[{"name":"Hunan Provincial Key Laboratory of Micro &amp; Nano Materials Interface Science College of Chemistry and Chemical Engineering and State Key Laboratory of Powder Metallurgy Central South University  Changsha Hunan 410083 People's Republic of China"},{"name":"School of Metallurgy and Environment Central South University  Changsha Hunan 410083 People's Republic of China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ramadan A.","family":"Geioushy","sequence":"additional","affiliation":[{"name":"Central Metallurgical Research and Development Institute  P.O. Box: 87 Helwan Cairo 11421 Egypt"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tahany","family":"Mahmoud","sequence":"additional","affiliation":[{"name":"Petroleum Application Department Egyptian Petroleum Research Institute  Nasr City Cairo 11727 Egypt"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yi","family":"Zhang","sequence":"additional","affiliation":[{"name":"Hunan Provincial Key Laboratory of Micro &amp; Nano Materials Interface Science College of Chemistry and Chemical Engineering and State Key Laboratory of Powder Metallurgy Central South University  Changsha Hunan 410083 People's Republic of China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9007-4817","authenticated-orcid":false,"given":"Min","family":"Liu","sequence":"additional","affiliation":[{"name":"Hunan Joint International Research Center for Carbon Dioxide Resource Utilization School of Physics Central South University  Changsha 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China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2025,10,3]]},"reference":[{"key":"e_1_2_9_1_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41929-022-00887-z"},{"key":"e_1_2_9_2_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41557-023-01163-8"},{"key":"e_1_2_9_3_1","doi-asserted-by":"publisher","DOI":"10.1038\/s44160-024-00603-8"},{"key":"e_1_2_9_4_1","doi-asserted-by":"publisher","DOI":"10.31635\/ccschem.023.202303333"},{"key":"e_1_2_9_5_1","doi-asserted-by":"publisher","DOI":"10.1039\/D1CS00535A"},{"key":"e_1_2_9_6_1","doi-asserted-by":"publisher","DOI":"10.1039\/D3NR03834C"},{"key":"e_1_2_9_7_1","doi-asserted-by":"publisher","DOI":"10.1021\/acscatal.3c03469"},{"key":"e_1_2_9_8_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.chemrev.8b00705"},{"key":"e_1_2_9_9_1","doi-asserted-by":"publisher","DOI":"10.1039\/D2EN00561A"},{"key":"e_1_2_9_10_1","doi-asserted-by":"publisher","DOI":"10.1002\/ange.202512179"},{"key":"e_1_2_9_11_1","doi-asserted-by":"publisher","DOI":"10.1021\/jacs.5c06799"},{"key":"e_1_2_9_12_1","doi-asserted-by":"publisher","DOI":"10.1039\/D4QI02713B"},{"key":"e_1_2_9_13_1","doi-asserted-by":"publisher","DOI":"10.1002\/adma.202304414"},{"key":"e_1_2_9_14_1","doi-asserted-by":"publisher","DOI":"10.1002\/ange.202201007"},{"key":"e_1_2_9_15_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.202206233"},{"key":"e_1_2_9_16_1","doi-asserted-by":"publisher","DOI":"10.1002\/ange.202114238"},{"key":"e_1_2_9_17_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jallcom.2023.169155"},{"key":"e_1_2_9_18_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41467-021-20961-7"},{"key":"e_1_2_9_19_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41929-021-00683-1"},{"key":"e_1_2_9_20_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41467-024-54630-2"},{"key":"e_1_2_9_21_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.202507062"},{"key":"e_1_2_9_22_1","doi-asserted-by":"publisher","DOI":"10.1039\/D4TA04263H"},{"key":"e_1_2_9_23_1","doi-asserted-by":"publisher","DOI":"10.1016\/S1872-2067(23)64519-X"},{"key":"e_1_2_9_24_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41929-018-0139-9"},{"key":"e_1_2_9_25_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41467-019-11292-9"},{"key":"e_1_2_9_26_1","doi-asserted-by":"publisher","DOI":"10.1038\/ncomms5948"},{"key":"e_1_2_9_27_1","doi-asserted-by":"publisher","DOI":"10.1021\/jacs.0c01859"},{"key":"e_1_2_9_28_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.joule.2020.07.009"},{"key":"e_1_2_9_29_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41929-022-00788-1"},{"key":"e_1_2_9_30_1","doi-asserted-by":"publisher","DOI":"10.1021\/jacs.0c05408"},{"key":"e_1_2_9_31_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.202317471"},{"key":"e_1_2_9_32_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41586-022-05540-0"},{"key":"e_1_2_9_33_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41929-022-00760-z"},{"key":"e_1_2_9_34_1","doi-asserted-by":"publisher","DOI":"10.1021\/jacs.5c03057"},{"key":"e_1_2_9_35_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jechem.2024.08.005"},{"key":"e_1_2_9_36_1","doi-asserted-by":"publisher","DOI":"10.1021\/acsaem.9b00791"},{"key":"e_1_2_9_37_1","doi-asserted-by":"publisher","DOI":"10.1021\/jacs.9b02945"},{"key":"e_1_2_9_38_1","doi-asserted-by":"publisher","DOI":"10.1021\/jacs.7b08607"},{"key":"e_1_2_9_39_1","doi-asserted-by":"publisher","DOI":"10.1002\/smll.202412395"},{"key":"e_1_2_9_40_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41565-025-01914-3"},{"key":"e_1_2_9_41_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.cattod.2019.03.025"},{"key":"e_1_2_9_42_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.apcatb.2015.04.055"},{"key":"e_1_2_9_43_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jcou.2019.03.002"},{"key":"e_1_2_9_44_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41560-020-00730-4"},{"key":"e_1_2_9_45_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.accounts.1c00650"},{"key":"e_1_2_9_46_1","doi-asserted-by":"publisher","DOI":"10.1126\/science.aaf8402"},{"key":"e_1_2_9_47_1","doi-asserted-by":"publisher","DOI":"10.1021\/jacs.7b03163"},{"key":"e_1_2_9_48_1","doi-asserted-by":"publisher","DOI":"10.1126\/science.aav4302"},{"key":"e_1_2_9_49_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.electacta.2022.140774"},{"key":"e_1_2_9_50_1","doi-asserted-by":"publisher","DOI":"10.1021\/acscatal.7b02822"},{"key":"e_1_2_9_51_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.nanoen.2019.104331"},{"key":"e_1_2_9_52_1","doi-asserted-by":"publisher","DOI":"10.1002\/ange.202217369"},{"key":"e_1_2_9_53_1","doi-asserted-by":"publisher","DOI":"10.1002\/smll.202102293"},{"key":"e_1_2_9_54_1","doi-asserted-by":"publisher","DOI":"10.1021\/acscatal.9b05319"},{"key":"e_1_2_9_55_1","doi-asserted-by":"publisher","DOI":"10.1021\/acsami.8b20545"},{"key":"e_1_2_9_56_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41467-023-43693-2"},{"key":"e_1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