Articles producció científica> Enginyeria Electrònica, Elèctrica i Automàtica

WO3 nanowires loaded with cobalt oxide nanoparticles, deposited by a two-step AACVD for gas sensing applications

  • Datos identificativos

    Identificador: imarina:5764726
    Handle: https://hdl.handle.net/20.500.11797/imarina5764726
    Autores:
    Navarrete, EricBittencourt, CarlaNoirfalise, XavierUmek, PolonaGonzalez, ErnestoGuell, FrankLlobet, Eduard
    Resumen:
    © 2019 Elsevier B.V. A two-step procedure was implemented to obtain tungsten oxide nanowires (WO3) doped with cobalt oxide nanoparticles employing W(CO)6 and the metal-organic precursor Co(acac)2. In the first step, tungsten oxide nanowires were grown at 400 °C using an aerosol assisted chemical vapor deposition system (AA-CVD) and subsequently annealed at 500 ºC for 2 h in dry air. Then, cobalt oxide loading (at different dose levels) of the nanowires was performed via a second AA-CVD process. These hybrid nanomaterials were grown on top of commercial alumina substrates that comprised interdigitated electrodes and a heating element. The response of these nanomaterials toward H2S, ethanol H2 and ammonia is investigated and discussed. Co-loaded tungsten oxide is well suited for detecting ammonia under dry conditions and hydrogen sulfide in humid environments.

  • Otros:

    Autor según el artículo: Navarrete, Eric; Bittencourt, Carla; Noirfalise, Xavier; Umek, Polona; Gonzalez, Ernesto; Guell, Frank; Llobet, Eduard
    Departamento: Enginyeria Electrònica, Elèctrica i Automàtica
    Autor/es de la URV: Llobet Valero, Eduard / Navarrete Gatell, Èric
    Palabras clave: Tungsten trioxide Nanowires Gas sensors Cobalt oxide
    Resumen: © 2019 Elsevier B.V. A two-step procedure was implemented to obtain tungsten oxide nanowires (WO3) doped with cobalt oxide nanoparticles employing W(CO)6 and the metal-organic precursor Co(acac)2. In the first step, tungsten oxide nanowires were grown at 400 °C using an aerosol assisted chemical vapor deposition system (AA-CVD) and subsequently annealed at 500 ºC for 2 h in dry air. Then, cobalt oxide loading (at different dose levels) of the nanowires was performed via a second AA-CVD process. These hybrid nanomaterials were grown on top of commercial alumina substrates that comprised interdigitated electrodes and a heating element. The response of these nanomaterials toward H2S, ethanol H2 and ammonia is investigated and discussed. Co-loaded tungsten oxide is well suited for detecting ammonia under dry conditions and hydrogen sulfide in humid environments.
    Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/
    ISSN: 0925-4005
    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/abs/pii/S0925400519310676
    URL Documento de licencia: https://repositori.urv.cat/ca/proteccio-de-dades/
    Referencia al articulo segun fuente origial: Sensors And Actuators B: Chemical. 298 (126868): 126868-
    Referencia de l'ítem segons les normes APA: Navarrete, Eric; Bittencourt, Carla; Noirfalise, Xavier; Umek, Polona; Gonzalez, Ernesto; Guell, Frank; Llobet, Eduard (2019). WO3 nanowires loaded with cobalt oxide nanoparticles, deposited by a two-step AACVD for gas sensing applications. Sensors And Actuators B: Chemical, 298(126868), 126868-. DOI: 10.1016/j.snb.2019.126868
    DOI del artículo: 10.1016/j.snb.2019.126868
    Entidad: Universitat Rovira i Virgili
    Año de publicación de la revista: 2019
    Tipo de publicación: Journal Publications

  • Palabras clave:

    Tungsten trioxide
    Nanowires
    Gas sensors
    Cobalt oxide

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