Articles producció científica> Enginyeria Electrònica, Elèctrica i Automàtica

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

  • Dades identificatives

    Identificador: imarina:5815915
    Autors:
    Navarrete, EricBittencourt, CarlaUmek, PolonaCossement, DamienGuell, FrankLlobet, Eduard
    Resum:
    © 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.
  • Altres:

    Autor segons l'article: Navarrete, Eric; Bittencourt, Carla; Umek, Polona; Cossement, Damien; Guell, Frank; Llobet, Eduard
    Departament: Enginyeria Electrònica, Elèctrica i Automàtica
    Autor/s de la URV: Llobet Valero, Eduard / Navarrete Gatell, Èric
    Paraules clau: Zno nanowires Water Tungsten oxide Oxygen evolution No2 No 2 Nanowires Nanoparticles Iridium oxide Gas sensing Aerosol-assisted cvd
    Resum: © 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.
    Àrees temàtiques: 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
    Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/
    ISSN: 0925-8388
    Adreça de correu electrònic de l'autor: eric.navarrete@urv.cat eric.navarrete@urv.cat eduard.llobet@urv.cat
    Identificador de l'autor: 0000-0001-6164-4342
    Data d'alta del registre: 2024-10-12
    Versió de l'article dipositat: info:eu-repo/semantics/acceptedVersion
    Enllaç font original: https://www.sciencedirect.com/science/article/pii/S0925838819334024?via%3Dihub
    URL Document de llicència: https://repositori.urv.cat/ca/proteccio-de-dades/
    Referència a l'article segons font original: Journal Of Alloys And Compounds. 812 (UNSP 152156): 152156-
    Referència 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 de l'article: 10.1016/j.jallcom.2019.152156
    Entitat: Universitat Rovira i Virgili
    Any de publicació de la revista: 2020
    Tipus de publicació: Journal Publications
  • Paraules clau:

    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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