{"id":47002,"date":"2020-08-26T09:17:21","date_gmt":"2020-08-26T09:17:21","guid":{"rendered":"https:\/\/\/feuille-artificielle-imitant-la-photosynthese\/"},"modified":"2020-08-26T09:17:21","modified_gmt":"2020-08-26T09:17:21","slug":"feuille-artificielle-imitant-la-photosynthese","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/feuille-artificielle-imitant-la-photosynthese\/","title":{"rendered":"Feuille Artificielle imitant la photosynth\u00e8se"},"content":{"rendered":"<p><span class=\"tlid-translation translation\" lang=\"fr\">L&rsquo;eau est une ressource pr\u00e9cieuse et l&rsquo;efficacit\u00e9 de la conversion reste donc essentielle, mais l&rsquo;acide formique produit (HCOOH) qui peut \u00eatre utilis\u00e9 comme \u00abcarburant\u00bb peut \u00eatre stock\u00e9 et \u00eatre utilis\u00e9 directement ou converti en hydrog\u00e8ne. Le dispositif qui repr\u00e9sente une \u00e9tape importante vers la r\u00e9alisation de la photosynth\u00e8se artificielle, est bas\u00e9 sur une technologie utilisant des feuilles photosensibles.<\/span><\/p>\n<p><span class=\"tlid-translation translation\" lang=\"fr\">Ce d\u00e9veloppement est une am\u00e9lioration d&rsquo;une pr\u00e9c\u00e9dente \u00abfeuille artificielle\u00bb d\u00e9velopp\u00e9e par un groupe dirig\u00e9 par le professeur Erwin Reisner \u00e0 Cambridge en 2019 qui utilise la lumi\u00e8re du soleil, le dioxyde de carbone et l&rsquo;eau pour produire un carburant, connu sous le nom de <\/span>\u00ab\u00a0syngas\u00a0\u00bb&nbsp; ou <span class=\"tlid-translation translation\" lang=\"fr\">gaz de synth\u00e8se.<\/span><\/p>\n<p><span class=\"tlid-translation translation\" lang=\"fr\">Les derniers travaux d\u00e9taillent un dispositif qui produit du carburant en utilisant la lumi\u00e8re du soleil et de l&rsquo;eau tout en produisant de l&rsquo;oxyg\u00e8ne et en retirant du dioxyde de carbone de l&rsquo;atmosph\u00e8re ambiante.<\/span><\/p>\n<p><span class=\"tlid-translation translation\" lang=\"fr\">\u00ab\u00a0Il a \u00e9t\u00e9 difficile de r\u00e9aliser une photosynth\u00e8se artificielle avec un degr\u00e9 \u00e9lev\u00e9 de s\u00e9lectivit\u00e9, de sorte \u00e0 convertir le plus possible de lumi\u00e8re du soleil en carburant utilisable, plut\u00f4t que de vous retrouver avec beaucoup de d\u00e9chets\u00a0\u00bb, a d\u00e9clar\u00e9 Qian Wang de Cambridge, D\u00e9partement de chimie, premier auteur du dernier article publi\u00e9 dans Nature Energy.<\/span><\/p>\n<p><span class=\"tlid-translation translation\" lang=\"fr\">Alors que la feuille artificielle pr\u00e9c\u00e9dente du groupe de Cambridge utilisait des composants de cellules solaires, le dernier dispositif utilise un photocatalyseur \u00e0 base de colbalt int\u00e9gr\u00e9 avec des poudres de semiconducteurs sous forme de feuilles qui peuvent \u00eatre pr\u00e9par\u00e9es en grandes quantit\u00e9s plus facilement et \u00e0 moindre co\u00fbt.<\/span><\/p>\n<p><span class=\"tlid-translation translation\" lang=\"fr\">L&rsquo;assemblage de la feuille de photosensible facilite la mise \u00e0 l&rsquo;\u00e9chelle de la fabrication, mais des am\u00e9liorations de l&rsquo;efficacit\u00e9 de conversion et de la stabilit\u00e9 sont n\u00e9cessaires pour permettre un d\u00e9ploiement commercial, a d\u00e9clar\u00e9 l&rsquo;universit\u00e9.<\/span><\/p>\n<p><em><strong>Reference:<\/strong><\/em> <em>Qian Wang et al. \u2018<\/em><a href=\"https:\/\/www.nature.com\/articles\/s41560-020-0678-6\" target=\"_blank\" rel=\"noopener\"><em>Molecularly engineered photocatalyst sheet for scalable solar formate production from carbon dioxide and water<\/em><\/a><em>.\u2019 Nature Energy (2020). DOI:<\/em> <em>10.1038\/s41560-020-0678-6<\/em><\/p>\n<p><strong><em>Lire aussi:<\/em><\/strong><\/p>\n<p><a href=\"https:\/\/www.electronique-eci.com\/news\/des-capteurs-de-lumiere-moins-chers-moins-toxiques-et-recyclables\">Des capteurs de lumi\u00e8re moins chers, moins toxiques et recyclables<\/a><\/p>\n<p><strong>Related links and articles: <\/strong><\/p>\n<p><a href=\"http:\/\/www.cam.ac.uk\">www.cam.ac.uk<\/a><\/p>\n<p><strong>Related articles: <\/strong><\/p>\n<ul>\n<li><a href=\"https:\/\/www.eenewsanalog.com\/news\/artificial-leaf-produces-methanol-oxygen-carbon-dioxide\">Synthetic leaf produces methanol, oxygen from carbon dioxide<\/a><\/li>\n<li><a href=\"https:\/\/www.eenewsanalog.com\/news\/europes-research-bodies-should-lead-climate-says-vtt\">European&nbsp;research bodies should lead on climate, says VTT<\/a><\/li>\n<li><a href=\"https:\/\/www.eenewseurope.com\/news\/5g-play-key-role-building-greener-uk-economy\">5G to play key role in greener 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href=\"https:\/\/www.eenewseurope.com\/news\/ambiq-teams-low-power-biometric-security\">Ambiq teams for low power biometric security<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Des chercheurs de l&rsquo;Universit\u00e9 de Cambridge ont cr\u00e9\u00e9 une feuille artificielle qui pourrait avoir un impact sur le changement climatique en convertissant le dioxyde de carbone et l&rsquo;eau en oxyg\u00e8ne et acide formique.<\/p>\n","protected":false},"author":12,"featured_media":47003,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[883],"tags":[889,909,901,919,913,890],"domains":[47],"ppma_author":[1144],"class_list":["post-47002","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-technologies","tag-analog-fr","tag-batteries-power-supplies-fr","tag-energyharvesting-fr","tag-iot-fr","tag-materials-processes-fr","tag-powermanagement-fr","domains-electronique-eci"],"acf":[],"yoast_head":"<title>Feuille Artificielle imitant la photosynth\u00e8se ...<\/title>\n<meta name=\"description\" content=\"Des chercheurs de l&#039;Universit\u00e9 de Cambridge ont cr\u00e9\u00e9 une feuille artificielle qui pourrait avoir un impact sur le changement climatique en convertissant...\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, 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