Articles producció científica> Enginyeria Electrònica, Elèctrica i Automàtica

Tungsten trioxide nanowires decorated with iridium oxide nanoparticles as gas sensing material

  • Datos identificativos

    Identificador: imarina:5815915
    Autores:
    Navarrete, EricBittencourt, CarlaUmek, PolonaCossement, DamienGuell, FrankLlobet, Eduard
    Resumen:
    © 2019 Elsevier B.V. Tungsten trioxide nanowires were grown employing aerosol assisted chemical vapor deposition (AACVD) and subsequently decorated with different loading levels of iridium oxide nanoparticles. AACVD has been already demonstrated to be a useful tool to load different ranges of nanoparticles on top of an already grown layer. This procedure enables growing the gas sensitive nanomaterials directly onto application substrates for the development of chemo-resistive gas sensors. The morphology and composition of the different materials were characterized via different techniques. It was found that iridium oxide loading resulted in remarkable changes in the morphology and defects of tungsten oxide nanowires. The gas sensing properties of such layers were studied towards ethanol or ammonia vapors, hydrogen, hydrogen sulfide, and nitrogen dioxide. The optimization of the operating temperature and the level of iridium oxide loading results in an improvement in the responsiveness and selectivity towards the species tested. In particular, a dramatically high increase in the response towards nitrogen dioxide is achieved. The mechanisms of gas sensing are discussed in detail.
  • Otros:

    Autor según el artículo: Navarrete, Eric; Bittencourt, Carla; Umek, Polona; Cossement, Damien; Guell, Frank; Llobet, Eduard
    Departamento: Enginyeria Electrònica, Elèctrica i Automàtica
    Autor/es de la URV: Llobet Valero, Eduard / Navarrete Gatell, Èric
    Palabras clave: Zno nanowires Water Tungsten oxide Oxygen evolution No2 No 2 Nanowires Nanoparticles Iridium oxide Gas sensing Aerosol-assisted cvd
    Resumen: © 2019 Elsevier B.V. Tungsten trioxide nanowires were grown employing aerosol assisted chemical vapor deposition (AACVD) and subsequently decorated with different loading levels of iridium oxide nanoparticles. AACVD has been already demonstrated to be a useful tool to load different ranges of nanoparticles on top of an already grown layer. This procedure enables growing the gas sensitive nanomaterials directly onto application substrates for the development of chemo-resistive gas sensors. The morphology and composition of the different materials were characterized via different techniques. It was found that iridium oxide loading resulted in remarkable changes in the morphology and defects of tungsten oxide nanowires. The gas sensing properties of such layers were studied towards ethanol or ammonia vapors, hydrogen, hydrogen sulfide, and nitrogen dioxide. The optimization of the operating temperature and the level of iridium oxide loading results in an improvement in the responsiveness and selectivity towards the species tested. In particular, a dramatically high increase in the response towards nitrogen dioxide is achieved. The mechanisms of gas sensing are discussed in detail.
    Áreas temáticas: Química Planejamento urbano e regional / demografia Odontología Metals and alloys Metallurgy & metallurgical engineering Mechanics of materials Mechanical engineering Materials science, multidisciplinary Materials science Materials chemistry Materiais Matemática / probabilidade e estatística Interdisciplinar Geociências Farmacia Ensino Engenharias iv Engenharias iii Engenharias ii Engenharias i Ciências biológicas i Ciências ambientais Ciências agrárias i Chemistry, physical Biotecnología Astronomia / física Antropologia / arqueologia Administração pública e de empresas, ciências contábeis e turismo
    Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/
    ISSN: 0925-8388
    Direcció de correo del autor: eric.navarrete@urv.cat eric.navarrete@urv.cat eduard.llobet@urv.cat
    Identificador del autor: 0000-0001-6164-4342
    Fecha de alta del registro: 2024-10-12
    Versión del articulo depositado: info:eu-repo/semantics/acceptedVersion
    Enlace a la fuente original: https://www.sciencedirect.com/science/article/pii/S0925838819334024?via%3Dihub
    URL Documento de licencia: https://repositori.urv.cat/ca/proteccio-de-dades/
    Referencia al articulo segun fuente origial: Journal Of Alloys And Compounds. 812 (UNSP 152156): 152156-
    Referencia de l'ítem segons les normes APA: Navarrete, Eric; Bittencourt, Carla; Umek, Polona; Cossement, Damien; Guell, Frank; Llobet, Eduard (2020). Tungsten trioxide nanowires decorated with iridium oxide nanoparticles as gas sensing material. Journal Of Alloys And Compounds, 812(UNSP 152156), 152156-. DOI: 10.1016/j.jallcom.2019.152156
    DOI del artículo: 10.1016/j.jallcom.2019.152156
    Entidad: Universitat Rovira i Virgili
    Año de publicación de la revista: 2020
    Tipo de publicación: Journal Publications
  • Palabras clave:

    Chemistry, Physical,Materials Chemistry,Materials Science,Materials Science, Multidisciplinary,Mechanical Engineering,Mechanics of Materials,Metallurgy & Metallurgical Engineering,Metals and Alloys
    Zno nanowires
    Water
    Tungsten oxide
    Oxygen evolution
    No2
    No 2
    Nanowires
    Nanoparticles
    Iridium oxide
    Gas sensing
    Aerosol-assisted cvd
    Química
    Planejamento urbano e regional / demografia
    Odontología
    Metals and alloys
    Metallurgy & metallurgical engineering
    Mechanics of materials
    Mechanical engineering
    Materials science, multidisciplinary
    Materials science
    Materials chemistry
    Materiais
    Matemática / probabilidade e estatística
    Interdisciplinar
    Geociências
    Farmacia
    Ensino
    Engenharias iv
    Engenharias iii
    Engenharias ii
    Engenharias i
    Ciências biológicas i
    Ciências ambientais
    Ciências agrárias i
    Chemistry, physical
    Biotecnología
    Astronomia / física
    Antropologia / arqueologia
    Administração pública e de empresas, ciências contábeis e turismo
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