{"id":26122,"date":"2003-03-10T00:00:00","date_gmt":"2003-03-10T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/influence-of-catalytic-additives-on-metal-oxide-nanoparticles-for-gas-sensing-applications\/"},"modified":"2003-03-10T00:00:00","modified_gmt":"2003-03-10T00:00:00","slug":"influence-of-catalytic-additives-on-metal-oxide-nanoparticles-for-gas-sensing-applications","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/barcelona\/influence-of-catalytic-additives-on-metal-oxide-nanoparticles-for-gas-sensing-applications\/","title":{"rendered":"Influence of catalytic additives on metal oxide nanoparticles for gas sensing applications"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Andreu Cabot Codina <\/strong><\/h2>\n<p>Este trabajo esta centrado en la caracterizaci\u00f3n y discusi\u00f3n de los efectos y mecanismos mediante los cuales diferentes elementos catal\u00edticos influencia las propiedades estructurales, el\u00e9ctricas y qu\u00edmicas de \u00f3xidos semiconductores nanocristalinos. El marco tecnol\u00f3gica de tales estudios es la obtenci\u00f3n de dispositivos electr\u00f3nicos para la detecci\u00f3n de la presencia gaseosa de diferentes concentraciones de gases.  el objetivo tecnol\u00f3gico es por lo tanto la comprensi\u00f3n de los mecanismos mediante los cuales las mol\u00e9culas de gas pueden influenciar las propiedades el\u00e9ctricas del material semiconductor para optimizar as\u00ed las propiedades de estos dispositivos, y en particular su selectividad.  en este estudio se caracterizan diferentes muestras de oxido de esta\u00f1o y oxido de indio que contienen paladio, platino o oro como aditivos. Estos elementos se introducen o bien durante la s\u00edntesis del material base o bien despu\u00e9s de esta, directamente en su superficie o fuera de esta. La concentraci\u00f3n de aditivo introducido y los tratamientos posteriores en el material tambi\u00e9n son tenidos en cuenta. Este gran conjunto de muestras nos permite determinar la influencia del tipo y la concentraci\u00f3n de aditivo, as\u00ed como la influencia del m\u00e9todo de s\u00edntesis en las propiedades del material obtenido. Mediante la caracterizaci\u00f3n por microscopia electr\u00f3nica de transmisi\u00f3n, y las espectroscopias de fotoelectrones, raman, de infrarrojos, y de rayos x, la influencia del estado qu\u00edmico, concentraci\u00f3n superficial, interacci\u00f3n electr\u00f3nica, localizaci\u00f3n y distribuci\u00f3n de los aditivos en las caracter\u00edsticas electr\u00f3nicas y estructurales del material pueden ser descritas. As\u00ed mismo el material obtenido es depositado sobre substrato de alumina con el electrodos de platino y que pueden ser calentados mediante una resistencia de platino depositada en la otra cara del dispositivo sensor. Estos dispositivos permiten la caracterizaci\u00f3n el\u00e9ctrica<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Influence of catalytic additives on metal oxide nanoparticles for gas sensing applications<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Influence of catalytic additives on metal oxide nanoparticles for gas sensing applications <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Andreu Cabot Codina <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Barcelona<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 03\/10\/2003<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3>Direcci\u00f3n y tribunal<\/h3>\n<ul>\n<li><strong>Director de la tesis<\/strong>\n<ul>\n<li>Joan Ramon Morante Lleonart<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: albert Romano rodr\u00edguez <\/li>\n<li>francis Menil (vocal)<\/li>\n<li>giuliano Martinelli (vocal)<\/li>\n<li>josep Calderer cardona (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Andreu Cabot Codina Este trabajo esta centrado en la caracterizaci\u00f3n y discusi\u00f3n de los efectos y mecanismos [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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