{"id":145459,"date":"2024-06-07T07:26:00","date_gmt":"2024-06-07T05:26:00","guid":{"rendered":"https:\/\/renewable-carbon.eu\/news\/?p=145459"},"modified":"2024-06-03T11:30:19","modified_gmt":"2024-06-03T09:30:19","slug":"linkage-engineering-in-covalent-organic-frameworks-for-metal-free-electrocatalytic-c2h4-production-from-co2","status":"publish","type":"post","link":"https:\/\/renewable-carbon.eu\/news\/linkage-engineering-in-covalent-organic-frameworks-for-metal-free-electrocatalytic-c2h4-production-from-co2\/","title":{"rendered":"Linkage Engineering in Covalent Organic Frameworks for Metal-Free Electrocatalytic C2H4\u00a0Production from CO2"},"content":{"rendered":"\n\n\n<h3 class=\"wp-block-heading\">Abstract<\/h3>\n\n\n\n<p>At present, most electrocatalysts for C<sub>2<\/sub>H<sub>4<\/sub>\u00a0production are limited to the heavy metal copper, meanwhile, achieving metal-free catalysis remains a challenge. Noted piperazine with\u00a0<em>sp<\/em><sup>3<\/sup>\u00a0N hybridization is beneficial to CO<sub>2<\/sub>\u00a0capture, but CO<sub>2<\/sub>RR performance and mechanism have been lacking. Herein, based on linkage engineering, we construct a novel high-density\u00a0<em>sp<\/em><sup>3<\/sup>\u00a0N catalytic array via introducing piperazine into the crystalline and microporous aminal-linked covalent organic frameworks (COFs). <\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"651\" height=\"534\" src=\"https:\/\/renewable-carbon.eu\/news\/media\/2024\/06\/202407press-1717070744943-3.webp\" alt=\"\" class=\"wp-image-145489\" srcset=\"https:\/\/renewable-carbon.eu\/news\/media\/2024\/06\/202407press-1717070744943-3.webp 651w, https:\/\/renewable-carbon.eu\/news\/media\/2024\/06\/202407press-1717070744943-3-300x246.webp 300w, https:\/\/renewable-carbon.eu\/news\/media\/2024\/06\/202407press-1717070744943-3-150x123.webp 150w, https:\/\/renewable-carbon.eu\/news\/media\/2024\/06\/202407press-1717070744943-3-329x270.webp 329w\" sizes=\"auto, (max-width: 651px) 100vw, 651px\" \/><figcaption class=\"wp-element-caption\">Metal-free covalent organic frameworks (COFs) are constructed by linkage engineering to efficiently catalyze the carbon dioxide reduction reaction (CO<sub>2<\/sub>RR). The catalytic array structure composed of\u00a0<em>sp<\/em><sup>3<\/sup>\u00a0N sites in the aminal linkages promotes CO<sub>2<\/sub>\u00a0capture and enhances the reaction kinetics for C<sub>2<\/sub>H<sub>4<\/sub>\u00a0production, thus showing a much higher Faraday efficiency of C<sub>2<\/sub>H<sub>4<\/sub>\u00a0than imine-linked COFs. \u00a9 University of Wuhan<\/figcaption><\/figure><\/div>\n\n\n<p>Thanks to its high\u00a0<em>sp<\/em><sup>3<\/sup>\u00a0N density, strong CO<sub>2<\/sub>\u00a0capture capacity and great hydrophilicity, aminal-linked COF successfully achieves the conversion of CO<sub>2<\/sub>\u00a0to C<sub>2<\/sub>H<sub>4<\/sub>\u00a0with a Faraday efficiency up to 19.1\u2009%, which is stand out in all reported metal-free COF electrocatalysts. In addition, a series of imine-linked COFs are synthesized and combined with DFT calculations to demonstrate the critical role of\u00a0<em>sp<\/em><sup>3<\/sup>\u00a0N in enhancing the kinetics of CO<sub>2<\/sub>RR. Therefore, this work reveals the extraordinary potential of linkage engineering in COFs to break through some catalytic bottlenecks.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Abstract At present, most electrocatalysts for C2H4\u00a0production are limited to the heavy metal copper, meanwhile, achieving metal-free catalysis remains a challenge. Noted piperazine with\u00a0sp3\u00a0N hybridization is beneficial to CO2\u00a0capture, but CO2RR performance and mechanism have been lacking. Herein, based on linkage engineering, we construct a novel high-density\u00a0sp3\u00a0N catalytic array via introducing piperazine into the crystalline [&#8230;]<\/p>\n","protected":false},"author":59,"featured_media":145488,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"none","nova_meta_subtitle":"Electrocatalytic carbon dioxide reduction reaction (CO2RR) to produce ethylene (C2H4) is conducive to sustainable development of energy and environment","footnotes":""},"categories":[5571],"tags":[10744,10416,20596,10408,10743],"supplier":[23823],"class_list":["post-145459","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-co2-based","tag-carboncapture","tag-circulareconomy","tag-electrocatalysis","tag-greenchemistry","tag-useco2","supplier-wuhan-university"],"_links":{"self":[{"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/posts\/145459","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/users\/59"}],"replies":[{"embeddable":true,"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/comments?post=145459"}],"version-history":[{"count":0,"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/posts\/145459\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/media\/145488"}],"wp:attachment":[{"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/media?parent=145459"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/categories?post=145459"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/tags?post=145459"},{"taxonomy":"supplier","embeddable":true,"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/supplier?post=145459"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}