{"id":473242,"date":"2025-02-20T09:09:47","date_gmt":"2025-02-20T08:09:47","guid":{"rendered":"https:\/\/www.ecinews.fr\/?p=473242"},"modified":"2025-02-20T09:09:47","modified_gmt":"2025-02-20T08:09:47","slug":"nanoreacteurs-dhydrogene-vert-a-base-de-bacteries","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/nanoreacteurs-dhydrogene-vert-a-base-de-bacteries\/","title":{"rendered":"Nanor\u00e9acteurs d’hydrog\u00e8ne vert \u00e0 base de bact\u00e9ries"},"content":{"rendered":"

La bio-ing\u00e9nierie des bact\u00e9ries pour en faire des \u00ab\u00a0nanor\u00e9acteurs d’hydrog\u00e8ne\u00a0\u00bb pourrait ouvrir la voie \u00e0 une m\u00e9thode rentable et sans carbone de production de carburants \u00e0 base d’hydrog\u00e8ne.<\/h2>\n

Des chercheurs du d\u00e9partement des sciences de l’ing\u00e9nieur de l’Universit\u00e9 d’Oxford ont r\u00e9alis\u00e9 des avanc\u00e9es majeures vers la r\u00e9alisation de l’hydrog\u00e8ne vert<\/strong>, c’est-\u00e0-dire la production d’hydrog\u00e8ne par scission de l’eau, aliment\u00e9e par des \u00e9nergies renouvelables.<\/p>\n

L’hydrog\u00e8ne pourrait jouer un r\u00f4le cl\u00e9 en nous aidant \u00e0 atteindre des \u00e9missions nettes nulles, puisqu’il br\u00fble proprement sans lib\u00e9rer deCO2<\/sub>. Cependant, la production industrielle actuelle d’hydrog\u00e8ne (gris) d\u00e9pend fortement des combustibles fossiles, g\u00e9n\u00e9rant environ 11,5 \u00e0 13,6 kilogrammes d’\u00e9missions deCO2<\/sub> par kilogramme d’hydrog\u00e8ne produit.<\/p>\n

Dans cette nouvelle \u00e9tude<\/a>, les chercheurs ont utilis\u00e9 une approche de biologie synth\u00e9tique pour transformer une esp\u00e8ce de bact\u00e9rie en un \u00ab\u00a0bio-nano-r\u00e9acteur\u00a0\u00bb cellulaire capable de diviser l’eau et de produire de l’hydrog\u00e8ne \u00e0 l’aide de la lumi\u00e8re du soleil. En g\u00e9n\u00e9rant un catalyseur tr\u00e8s efficace, stable et rentable, ils ont surmont\u00e9 l’un des d\u00e9fis majeurs qui ont frein\u00e9 la production d’hydrog\u00e8ne vert jusqu’\u00e0 pr\u00e9sent.<\/p>\n

Le premier auteur de l’\u00e9tude, Weiming Tu, candidat au doctorat au d\u00e9partement des sciences de l’ing\u00e9nieur d’Oxford, a d\u00e9clar\u00e9 : \u00ab\u00a0Le p\u00e9ri-plasme naturel de S. oneidensis offre un nano-environnement optimal pour la production d’hydrog\u00e8ne, car il \u00ab\u00a0comprime\u00a0\u00bb efficacement les protons et les \u00e9lectrons, augmentant ainsi la probabilit\u00e9 de leurs interactions \u00e0 l’int\u00e9rieur d’espaces \u00e0 l’\u00e9chelle nanom\u00e9trique. D’un point de vue thermodynamique, cette conception permet de r\u00e9duire l’\u00e9nergie n\u00e9cessaire \u00e0 la production d’hydrog\u00e8ne. Ce travail est une bonne d\u00e9monstration de l’ing\u00e9nierie de la biologie\u00a0\u00bb.<\/p>\n

\"\"<\/p>\n

Selon les chercheurs, le syst\u00e8me pourrait \u00eatre mis \u00e0 l’\u00e9chelle pour produire des \u00ab\u00a0feuilles artificielles\u00a0\u00bb, les cellules modifi\u00e9es \u00e9tant imprim\u00e9es sur un tissu en fibre de carbone. Lorsque ces feuilles artificielles sont expos\u00e9es \u00e0 la lumi\u00e8re du soleil, elles commencent imm\u00e9diatement \u00e0 produire de l’hydrog\u00e8ne.<\/p>\n","protected":false},"excerpt":{"rendered":"

La bio-ing\u00e9nierie des bact\u00e9ries pour en faire des \u00ab\u00a0nanor\u00e9acteurs d’hydrog\u00e8ne\u00a0\u00bb pourrait ouvrir la voie \u00e0 une m\u00e9thode rentable et sans carbone de production de carburants \u00e0 base d’hydrog\u00e8ne. Des chercheurs du d\u00e9partement des sciences de l’ing\u00e9nieur de l’Universit\u00e9 d’Oxford ont r\u00e9alis\u00e9 des avanc\u00e9es majeures vers la r\u00e9alisation de l’hydrog\u00e8ne vert, c’est-\u00e0-dire la production d’hydrog\u00e8ne par […]<\/p>\n","protected":false},"author":7,"featured_media":472732,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[3669,883],"tags":[9003],"domains":[47],"ppma_author":[1139,1153],"class_list":["post-473242","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouvelles","category-technologies","tag-hydrogene-vert","domains-electronique-eci"],"acf":[],"yoast_head":"Nanor\u00e9acteurs d'hydrog\u00e8ne vert \u00e0 base de bact\u00e9ries ...<\/title>\n<meta name=\"description\" content=\"La bio-ing\u00e9nierie des bact\u00e9ries pour en faire des "nanor\u00e9acteurs d'hydrog\u00e8ne" ouvrre la 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