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{"id":48504,"date":"2020-11-03T11:26:25","date_gmt":"2020-11-03T10:26:25","guid":{"rendered":"https:\/\/www.ubfc.fr\/?p=48504"},"modified":"2020-11-05T13:32:47","modified_gmt":"2020-11-05T12:32:47","slug":"detection-de-gaz-toxiques-par-un-nouveau-type-de-capteurs-a-nanodiamants","status":"publish","type":"post","link":"https:\/\/ubfc-preprod.u-bourgogne.fr\/detection-de-gaz-toxiques-par-un-nouveau-type-de-capteurs-a-nanodiamants\/","title":{"rendered":"D\u00e9tection de gaz toxiques par un nouveau type de capteurs \u00e0 nanodiamants"},"content":{"rendered":"\t\t
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D\u00e9velopper des capteurs pour la d\u00e9tection de gaz toxiques ? <\/span><\/strong><\/p>

C’est la mission de l\u2019\u00e9quipe de recherche porteuse du projet int\u00e9gr\u00e9 CoMICS (C<\/b><\/i><\/span><\/strong>hemistry <\/i><\/span>o<\/b><\/i><\/span><\/strong>f <\/i><\/span>M<\/b><\/i><\/span><\/strong>olecular <\/i><\/span>I<\/b><\/i><\/span><\/strong>nteractions: <\/i><\/span>C<\/b><\/i><\/span><\/strong>atalysis and <\/i><\/span><\/i>S<\/b><\/i><\/span><\/strong>ensors<\/i><\/span>) – projet soutenu par ISITE-BFC et la R\u00e9gion Bourgogne Franche-Comt\u00e9.<\/span><\/strong><\/p>\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

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Le dioxyde d’azote, NO2<\/sub>, est un gaz impliqu\u00e9 dans la formation des pluies acides, de l’ozone et du smog<\/em>. En plus de son impact environnemental n\u00e9gatif, il est \u00e9galement nocif pour la sant\u00e9 humaine, avec une limite d’exposition de seulement 3 ppm.<\/p>

La d\u00e9tection du NO2<\/sub> est donc un enjeu important, dont s\u2019est saisi Jean-Cyrille Hierso, pilote du projet CoMICS, et ses collaborateurs.<\/p>

Leurs travaux, portant sur le d\u00e9veloppement d\u2019un nouveau type de capteurs \u00e0 base de nanodiamants, fait l\u2019objet d\u2019un article (estampill\u00e9 Hot Paper<\/em>) r\u00e9cemment publi\u00e9 dans le journal international et leader de chimie pluridisciplinaire Angew Chemie International Edition.<\/em><\/p>\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

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R\u00e9sum\u00e9 :<\/strong><\/p>

Le dioxyde d’azote joue un r\u00f4le dans la formation des pluies acides, de l’ozone et du smog<\/em>. Avec une limite d’exposition humaine de seulement 3 ppm, ce gaz est \u00e9galement nocif pour la sant\u00e9 humaine. La d\u00e9tection du NO2<\/sub> est donc importante.<\/p>

Jean-Cyrille Hierso (Universit\u00e9 Bourgogne Franche-Comt\u00e9, Dijon – France, et Institut Universitaire de France, Paris)<\/span>, Eduard Llobet (Universit\u00e9 Rovira i Virgili, Tarragone \u2013 Espagne)<\/span>, Peter R. Schreiner (Universit\u00e9 de Gie\u00dfen, Allemagne)<\/span> et leurs coll\u00e8gues ont mis au point des nanodiamants (diamanto\u00efdes) fonctionnalis\u00e9s \u00e0 base de carbone hybrid\u00e9 sp3<\/sup> qui d\u00e9tectent le NO2<\/sub> et l’ammoniac (NH3<\/sub>) au niveau ppb, et ce, avec une faible d\u00e9pense \u00e9nerg\u00e9tique. Les chercheurs ont d\u00e9pos\u00e9 du palladium sur des assemblages cristallins de diamantane fonctionnalis\u00e9s avec des phosphines primaires. Les nanomat\u00e9riaux poreux qui en r\u00e9sultent sont des semi-conducteurs de type p ayant une surface sp\u00e9cifique \u00e9lev\u00e9e pouvant atteindre 140 m2<\/sup> g-1<\/sup>.<\/p>

L’adsorption de NO2<\/sub> ou de NH3<\/sub> sur le diamanto\u00efde produit des variations mesurables de la r\u00e9sistance \u00e9lectrique \u00e0 des niveaux inf\u00e9rieurs au seuil limite d’exposition humaine. La r\u00e9ponse gazeuse est enti\u00e8rement r\u00e9versible \u00e0 temp\u00e9rature ambiante. Les capteurs \u00e0 base de diamanto\u00efdes font preuve d’une grande stabilit\u00e9 dans des conditions environnementales variables. L’\u00e9quipe pense que ces capteurs de gaz pourraient \u00eatre largement utilis\u00e9s dans les r\u00e9seaux sans fil de d\u00e9tection de la qualit\u00e9 de l’air.<\/p>\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

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Le d\u00e9veloppement de ces nouveaux capteurs implique des \u00e9quipes de l\u2019ICMUB (UMR 6302\u00a0: CNRS, uB)<\/span>, du laboratoire ICB (UMR 6303\u00a0: CNRS, uB, UTBM)<\/span>, de l\u2019institut UTINAM (UMR 6213\u00a0: CNRS, UFC)<\/span> et de l\u2019Institut FEMTO-ST (UMR 6174\u00a0: CNRS, UFC, ENSMM, UTBM)<\/span> et repose sur une collaboration europ\u00e9enne avec l\u2019implication d\u2019un groupe espagnol et allemand.<\/p>\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

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Actuellement, l\u2019\u00e9tude a \u00e9t\u00e9 valoris\u00e9e dans Chemistry Views<\/a><\/em> et URVACTIV@<\/a>.<\/p>

Pour lire la publication, cliquez ici<\/a><\/p>\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

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Contact :
<\/strong>
Jean-Cyrille Hierso<\/a>
Professeur
ICMUB (Institut de Chimie Mol\u00e9culaire de l’Universit\u00e9 de Bourgogne) – UMR 6302\u00a0: CNRS, uB<\/p>\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":"

D\u00e9velopper des capteurs pour la d\u00e9tection de gaz toxiques ? C’est la mission de l\u2019\u00e9quipe de recherche porteuse du projet int\u00e9gr\u00e9 CoMICS (Chemistry of Molecular Interactions: Catalysis and Sensors) – projet soutenu par ISITE-BFC et la R\u00e9gion Bourgogne Franche-Comt\u00e9. Le dioxyde d’azote, NO2, est un gaz impliqu\u00e9 dans la formation des pluies acides, de l’ozone … Continued<\/a><\/p>\n","protected":false},"author":18,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2049,14],"class_list":["post-48504","post","type-post","status-publish","format-standard","hentry","category-recherche","category-ubfc"],"acf":[],"_links":{"self":[{"href":"https:\/\/ubfc-preprod.u-bourgogne.fr\/wp-json\/wp\/v2\/posts\/48504"}],"collection":[{"href":"https:\/\/ubfc-preprod.u-bourgogne.fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ubfc-preprod.u-bourgogne.fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ubfc-preprod.u-bourgogne.fr\/wp-json\/wp\/v2\/users\/18"}],"replies":[{"embeddable":true,"href":"https:\/\/ubfc-preprod.u-bourgogne.fr\/wp-json\/wp\/v2\/comments?post=48504"}],"version-history":[{"count":6,"href":"https:\/\/ubfc-preprod.u-bourgogne.fr\/wp-json\/wp\/v2\/posts\/48504\/revisions"}],"predecessor-version":[{"id":48519,"href":"https:\/\/ubfc-preprod.u-bourgogne.fr\/wp-json\/wp\/v2\/posts\/48504\/revisions\/48519"}],"wp:attachment":[{"href":"https:\/\/ubfc-preprod.u-bourgogne.fr\/wp-json\/wp\/v2\/media?parent=48504"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ubfc-preprod.u-bourgogne.fr\/wp-json\/wp\/v2\/categories?post=48504"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}