{"id":13876,"date":"2023-12-16T11:27:46","date_gmt":"2023-12-16T14:27:46","guid":{"rendered":"https:\/\/www.fie.undef.edu.ar\/ceptm\/?p=13876"},"modified":"2023-12-16T11:27:46","modified_gmt":"2023-12-16T14:27:46","slug":"extraccion-de-uranio-del-agua-de-mar-como-otra-fuente-de-combustible-nuclear","status":"publish","type":"post","link":"https:\/\/www.fie.undef.edu.ar\/ceptm\/?p=13876","title":{"rendered":"Extracci\u00f3n de uranio del agua de mar como otra fuente de combustible nuclear"},"content":{"rendered":"<p>La Nuclear Energy Agency, organismo de la OECD, estima que 4.500 millones de toneladas de uranio se encuentran disueltos en nuestros oc\u00e9anos. Esta reserva es m\u00e1s de 1.000 veces mayor que la que hay en tierra, sin embargo, su extracci\u00f3n ha demostrado ser un desaf\u00edo, ya que al presente los materiales para hacerlo no tienen suficiente superficie para atrapar los iones de manera efectiva. En el documento adjunto, investigadores de la Northeast Normal University en China han desarrollado un material para ser usado como electrodo que pudiera usarse en la captura electroqu\u00edmica de iones de uranio del agua de mar. En pruebas con agua del Mar de Bohai, los electrodos extrajeron 12,6 miligramos de uranio por gramo de agua operando durante 24 d\u00edas. La capacidad del material recubierto fue mayor que la de la mayor\u00eda de los otros materiales de extracci\u00f3n de uranio probados por el equipo. Adem\u00e1s, utilizar la electroqu\u00edmica para atrapar los iones fue aproximadamente tres veces m\u00e1s r\u00e1pido que simplemente permitir que se acumularan de forma natural en las telas. Este trabajo sent\u00f3 una plataforma para el dise\u00f1o de electrodos de pol\u00edmeros org\u00e1nicos porosos aut\u00f3nomos y proporcion\u00f3 una estrategia eficaz para la extracci\u00f3n de uranio del agua de mar mediante procesos electroqu\u00edmicos.<\/p>\n<hr \/>\n<p id=\"Abstract\" class=\"article_abstract-title\"><strong>Abstract<\/strong><\/p>\n<p>Electrochemical uranium extraction from seawater provides a new opportunity for a sustainable supply of nuclear fuel. However, there is still room for studying flexible electrode materials in this field. Herein, we construct amidoxime group modified porous aromatic frameworks (PAF-144-AO) on flexible carbon cloths\u00a0<i>in situ<\/i>\u00a0using an easy to scale-up electropolymerization method followed by postdecoration to fabricate the self-standing, binder-free, metal-free electrodes (PAF-E). Based on the architectural design, adsorption sites (amidoxime groups) and catalytic sites (carbazole groups) are integrated into PAF-144-AO. Under the action of an alternating electric field, uranyl ions are selectively captured by PAN-E and subsequently transformed into Na<sub>2<\/sub>O(UO<sub>3<\/sub>\u00b7H<sub>2<\/sub>O)<sub><i>x<\/i><\/sub>\u00a0precipitates in the presence of Na<sup>+<\/sup>\u00a0via reversible electron transfer, with an extraction capacity of 12.6 mg g<sup>\u20131<\/sup>\u00a0over 24 days from natural seawater. This adsorption\u2013electrocatalysis mechanism is also demonstrated at the molecular level by\u00a0<i>ex situ<\/i>\u00a0spectroscopy. Our work offers an effective approach to designing flexible porous organic polymer electrodes, which hold great potential in the field of electrochemical uranium extraction from seawater.<\/p>\n<p><a href=\"https:\/\/www.fie.undef.edu.ar\/ceptm\/wp-content\/uploads\/2023\/12\/chen-et-al-2023-self-standing-porous-aromatic-framework-electrodes-for-efficient-electrochemical-uranium-extraction.pdf\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" class=\"aligncenter wp-image-5168\" src=\"https:\/\/www.fie.undef.edu.ar\/ceptm\/wp-content\/uploads\/2020\/02\/icono-PDF-1-243x300.png\" alt=\"Descargar archivo pdf\" width=\"75\" height=\"93\" srcset=\"https:\/\/www.fie.undef.edu.ar\/ceptm\/wp-content\/uploads\/2020\/02\/icono-PDF-1-243x300.png 243w, https:\/\/www.fie.undef.edu.ar\/ceptm\/wp-content\/uploads\/2020\/02\/icono-PDF-1.png 310w\" sizes=\"(max-width: 75px) 100vw, 75px\" \/><\/a><strong>Fuente:<\/strong> <a href=\"https:\/\/pubs.acs.org\/doi\/full\/10.1021\/acscentsci.3c01291\" target=\"_blank\" rel=\"noopener\"><em>https:\/\/pubs.acs.org<\/em><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>La Nuclear Energy Agency, organismo de la OECD, estima que 4.500 millones de toneladas de uranio se encuentran disueltos en nuestros oc\u00e9anos. Esta reserva es&hellip; <\/p>\n","protected":false},"author":1,"featured_media":13877,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[35,24],"tags":[],"_links":{"self":[{"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=\/wp\/v2\/posts\/13876"}],"collection":[{"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=13876"}],"version-history":[{"count":1,"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=\/wp\/v2\/posts\/13876\/revisions"}],"predecessor-version":[{"id":13879,"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=\/wp\/v2\/posts\/13876\/revisions\/13879"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=\/wp\/v2\/media\/13877"}],"wp:attachment":[{"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=13876"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=13876"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=13876"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}