{"id":1603,"date":"2021-02-21T18:40:23","date_gmt":"2021-02-21T18:40:23","guid":{"rendered":"https:\/\/nebfeupicbas.pt\/?p=1603"},"modified":"2021-02-21T19:01:38","modified_gmt":"2021-02-21T19:01:38","slug":"bionow-19-tecnologia-de-conversao-de-residuos-em-grafeno","status":"publish","type":"post","link":"https:\/\/nebfeupicbas.pt\/?p=1603","title":{"rendered":"BioNOW! #19 &#8211; Tecnologia de convers\u00e3o de res\u00edduos em grafeno"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"1603\" class=\"elementor elementor-1603\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-6339162d elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"6339162d\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-6aa78706\" data-id=\"6aa78706\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-741b7d5 elementor-widget elementor-widget-heading\" data-id=\"741b7d5\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">BioNOW! #19 - Tecnologia de convers\u00e3o de res\u00edduos em grafeno<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a51ed15 elementor-widget elementor-widget-text-editor\" data-id=\"a51ed15\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Todos os anos, centenas de milh\u00f5es de toneladas de lixo s\u00e3o geradas pelo mundo todo, e encontrar formas eficazes e sustent\u00e1veis de as gerir torna-se cada vez mais critico, para se poder travar os efeitos adversos da polui\u00e7\u00e3o no ambiente. Novas tecnologias que permitem converter lixo org\u00e2nico, pl\u00e1sticos ou outras fontes de carbono em grafeno podem ser parte da solu\u00e7\u00e3o do problema.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-8ee8570 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"8ee8570\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-f50abbd\" data-id=\"f50abbd\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-00b4f63 elementor-widget elementor-widget-text-editor\" data-id=\"00b4f63\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Um processo desenvolvido pela <em>Rice University<\/em>, nos E.U.A. consegue converter materiais \u00e0 base de carbono, como mat\u00e9ria org\u00e2nica, pl\u00e1stico, madeira, borracha, etc. em grafeno, na forma de pequenos flocos. O processo, conhecido como <em>flash Joule heating<\/em> baseia-se em aquecer os materiais at\u00e9 uma temperatura de cerca de 3000 Kelvin. O grafeno gerado a partir deste processo \u00e9 uma variante do material em que as suas camadas est\u00e3o desalinhadas, tornando-o menos resistente \u00e0 tens\u00e3o, mas mais f\u00e1cil de trabalhar e misturar noutros compostos.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4382550 elementor-widget elementor-widget-image\" data-id=\"4382550\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"810\" height=\"411\" src=\"https:\/\/nebfeupicbas.pt\/wp-content\/uploads\/2021\/02\/bionow_19_image_2.jpg\" class=\"attachment-full size-full wp-image-1607\" alt=\"\" srcset=\"https:\/\/nebfeupicbas.pt\/wp-content\/uploads\/2021\/02\/bionow_19_image_2.jpg 810w, https:\/\/nebfeupicbas.pt\/wp-content\/uploads\/2021\/02\/bionow_19_image_2-300x152.jpg 300w, https:\/\/nebfeupicbas.pt\/wp-content\/uploads\/2021\/02\/bionow_19_image_2-700x355.jpg 700w, https:\/\/nebfeupicbas.pt\/wp-content\/uploads\/2021\/02\/bionow_19_image_2-768x390.jpg 768w\" sizes=\"(max-width: 810px) 100vw, 810px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8c82a79 elementor-widget elementor-widget-text-editor\" data-id=\"8c82a79\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Figura 1 \u2013 Esquema do processo de <em>flash Joule heating<\/em> e evolu\u00e7\u00e3o da temperatura ao longo do aquecimento.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-adc8fad elementor-widget elementor-widget-text-editor\" data-id=\"adc8fad\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Este processo tem potencial para tornar o grafeno, um material extremamente caro e de dif\u00edcil produ\u00e7\u00e3o, mais acess\u00edvel para uso em futuras tecnologias e processos industriais, que antes n\u00e3o seriam sustent\u00e1veis ou sequer poss\u00edveis.<\/p><p>Um dos usos principais para este processo ser\u00e1 adicionar pequenas concentra\u00e7\u00f5es de grafeno \u2013 cerca de 0.1% &#8211; a cimento, para controlar a hidrata\u00e7\u00e3o fortalecer o cimento e diminuir a quantidade necess\u00e1ria para cada uso, algo que seria muito ben\u00e9fico tendo em conta que a produ\u00e7\u00e3o de cimento \u00e9 uma das maiores fontes de emiss\u00f5es de CO<sub>2<\/sub> atualmente.<\/p><p>Sabe mais em:<br \/><a href=\"https:\/\/doi.org\/10.1038\/s41586-020-1938-0\" target=\"_blank\" rel=\"noopener\">https:\/\/doi.org\/10.1038\/s41586-020-1938-0<\/a><a href=\"https:\/\/doi.org\/10.1038\/nmat4771\" target=\"_blank\" rel=\"noopener\"><\/a><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Todos os anos, centenas de milh\u00f5es de toneladas de lixo s\u00e3o geradas pelo mundo todo, e encontrar formas eficazes e sustent\u00e1veis de as gerir torna-se cada vez mais critico, para se poder travar os efeitos adversos da polui\u00e7\u00e3o no ambiente. Novas tecnologias que permitem converter lixo org\u00e2nico, pl\u00e1sticos ou outras fontes de carbono em grafeno podem ser parte da solu\u00e7\u00e3o do problema.<\/p>\n","protected":false},"author":168,"featured_media":1606,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[14],"tags":[],"class_list":["post-1603","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-bionow"],"_links":{"self":[{"href":"https:\/\/nebfeupicbas.pt\/index.php?rest_route=\/wp\/v2\/posts\/1603","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nebfeupicbas.pt\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nebfeupicbas.pt\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nebfeupicbas.pt\/index.php?rest_route=\/wp\/v2\/users\/168"}],"replies":[{"embeddable":true,"href":"https:\/\/nebfeupicbas.pt\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1603"}],"version-history":[{"count":4,"href":"https:\/\/nebfeupicbas.pt\/index.php?rest_route=\/wp\/v2\/posts\/1603\/revisions"}],"predecessor-version":[{"id":1610,"href":"https:\/\/nebfeupicbas.pt\/index.php?rest_route=\/wp\/v2\/posts\/1603\/revisions\/1610"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nebfeupicbas.pt\/index.php?rest_route=\/wp\/v2\/media\/1606"}],"wp:attachment":[{"href":"https:\/\/nebfeupicbas.pt\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1603"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nebfeupicbas.pt\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1603"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nebfeupicbas.pt\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1603"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}