{"id":162,"date":"2025-07-01T11:39:41","date_gmt":"2025-07-01T15:39:41","guid":{"rendered":"https:\/\/sciences.ucf.edu\/physics\/duyle\/?p=162"},"modified":"2025-07-27T16:50:38","modified_gmt":"2025-07-27T20:50:38","slug":"promoting-co2rr-on-au-with-ammonium-cation","status":"publish","type":"post","link":"https:\/\/sciences.ucf.edu\/physics\/duyle\/promoting-co2rr-on-au-with-ammonium-cation\/","title":{"rendered":"Promoting CO2RR on Au with ammonium cation"},"content":{"rendered":"<div class=\"wp-block-image\">\n<figure class=\"alignright size-full is-resized\"><img decoding=\"async\" width=\"465\" height=\"293\" data-src=\"https:\/\/sciences.ucf.edu\/physics\/duyle\/wp-content\/uploads\/sites\/34\/2025\/07\/CO2RR_Au_3.gif\" alt=\"Diagram comparing CO\u2082 reduction activity on a gold electrode with K\u207a and NH\u2084\u207a ions, showing higher activity and stronger CO\u2082 stabilization with NH\u2084\u207a at low local pH.\" class=\"wp-image-165 lazyload\" style=\"--smush-placeholder-width: 465px; --smush-placeholder-aspect-ratio: 465\/293;width:324px;height:auto\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" \/><\/figure>\n<\/div>\n\n\n<p>In collaboration with experimental groups at UCF, we have demonstrated that ammonium cations are more effective promoters of CO<sub>2<\/sub> electroreduction (CO2RR) on Au in acidic media than Na<sup>+<\/sup> and K<sup>+<\/sup>, achieving a 3-fold improvement in the CO2RR activity. Our Grand canonical Density Functional Theory (GC-DFT) simulations\u00a0 reveal that promotional effect of NH<sub>4<\/sub><sup>+<\/sup> cations is attributed to their enhanced electrostatic stabilization of CO<sub>2<\/sub> adsorption, which is the rate-limiting step for the CO2RR on Au.<\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"426\" data-id=\"164\" data-src=\"https:\/\/sciences.ucf.edu\/physics\/duyle\/wp-content\/uploads\/sites\/34\/2025\/07\/CO2RR_Au-1024x426.png\" alt=\"Graph and simulation images comparing NH4+, K+, and Na+ effects on CO2RR activity, showing NH4+ enhances current density and CO2 stabilization more than K+ or Na+.\" class=\"wp-image-164 lazyload\" data-srcset=\"https:\/\/sciences.ucf.edu\/physics\/duyle\/wp-content\/uploads\/sites\/34\/2025\/07\/CO2RR_Au-1024x426.png 1024w, https:\/\/sciences.ucf.edu\/physics\/duyle\/wp-content\/uploads\/sites\/34\/2025\/07\/CO2RR_Au-300x125.png 300w, https:\/\/sciences.ucf.edu\/physics\/duyle\/wp-content\/uploads\/sites\/34\/2025\/07\/CO2RR_Au-768x319.png 768w, https:\/\/sciences.ucf.edu\/physics\/duyle\/wp-content\/uploads\/sites\/34\/2025\/07\/CO2RR_Au.png 1506w\" data-sizes=\"(max-width: 1024px) 100vw, 1024px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 1024px; --smush-placeholder-aspect-ratio: 1024\/426;\" \/><\/figure>\n<\/figure>\n\n\n\n<p>More details of this study can be found at: K. Shi, J. Janisch, Z. Ren, Z. Meng, D. Israel, D. Le, <a href=\"https:\/\/sciences.ucf.edu\/physics\/williamkaden\/\" target=\"_blank\" rel=\"noreferrer noopener\">W.E. Kaden<\/a>, <a href=\"https:\/\/sciences.ucf.edu\/physics\/rahman-group\/\" target=\"_blank\" rel=\"noreferrer noopener\">T.S. Rahman<\/a>, and <a href=\"https:\/\/sciences.ucf.edu\/physics\/fenglab\/\" target=\"_blank\" rel=\"noreferrer noopener\">X. Feng<\/a>, \u201c<strong>Ammonium Cation-Promoted CO<sub>2<\/sub>\u00a0Electroreduction on Au in Acidic Media<\/strong>,\u201d Journal of the American Chemical Society\u00a0<strong>147<\/strong>, 23277-23285 (2025).\u00a0<a href=\"http:\/\/doi.org\/10.1021\/jacs.5c08017\">http:\/\/doi.org\/10.1021\/jacs.5c08017<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>In collaboration with experimental groups at UCF, we have demonstrated that ammonium cations are more effective promoters of CO2 electroreduction (CO2RR) on Au in acidic media than Na+ and K+, achieving a 3-fold improvement in the CO2RR activity. Our Grand canonical Density Functional Theory (GC-DFT) simulations\u00a0 reveal that promotional effect of NH4+ cations is attributed &#8230; <a title=\"Promoting CO2RR on Au with ammonium cation\" class=\"read-more\" href=\"https:\/\/sciences.ucf.edu\/physics\/duyle\/promoting-co2rr-on-au-with-ammonium-cation\/\" aria-label=\"Read more about Promoting CO2RR on Au with ammonium cation\">Read more<\/a><\/p>\n","protected":false},"author":66,"featured_media":0,"comment_status":"off","ping_status":"off","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[16,13,10,12,14,15],"tags":[],"class_list":["post-162","post","type-post","status-publish","format-standard","hentry","category-cations","category-co2rr","category-electrocatalysis","category-gc-dft","category-highlights","category-new-publications"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Promoting CO2RR on Au with ammonium cation - CoMET<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/sciences.ucf.edu\/physics\/duyle\/promoting-co2rr-on-au-with-ammonium-cation\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Promoting CO2RR on Au with ammonium cation - CoMET\" \/>\n<meta property=\"og:description\" content=\"In collaboration with experimental groups at UCF, we have demonstrated that ammonium cations are more effective promoters of CO2 electroreduction (CO2RR) on Au in acidic media than Na+ and K+, achieving a 3-fold improvement in the CO2RR activity. Our Grand canonical Density Functional Theory (GC-DFT) simulations\u00a0 reveal that promotional effect of NH4+ cations is attributed ... 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