Articles producció científica> Enginyeria Electrònica, Elèctrica i Automàtica

p-Type PdO nanoparticles supported on n-type WO 3 nanoneedles for hydrogen sensing

  • Datos identificativos

    Identificador: imarina:5610320
    Autores:
    Annanouch, F ERoso, SHaddi, ZVallejos, SUmek, PBittencourt, CBlackman, CVilic, TLlobet, E
    Resumen:
    © 2016 Elsevier B.V. We report the synthesis of palladium nanoparticle (NP) decorated WO 3 nanoneedles (NNs) employing a single-step, aerosol assisted chemical vapor deposition approach. Two different Pd precursors were investigated in view of optimizing the morphology and the gas sensing performance of the resulting nanostructured films. In particular, palladium acetylacetonate was found to be more suitable than ammonium hexachloropalladate for obtaining n-type WO 3 NNs uniformly decorated with well dispersed p-type PdO NPs. The active films could be directly deposited on the electrode area of microelectromechanical system-based resistive transducers. The morphology and chemical composition of the films was investigated by scanning electron microscopy, high-resolution transmission electron microscopy, Raman spectroscopy and X-ray photoelectron spectroscopy analysis. PdO-decorated WO 3 NNs show a response toward hydrogen that is about 680 times higher than that of bare WO 3 NNs. Finally, PdO-loaded sensors display extremely low-cross sensitivity to water vapor, which makes them remarkably immune to changes in the background humidity.
  • Otros:

    Autor según el artículo: Annanouch, F E; Roso, S; Haddi, Z; Vallejos, S; Umek, P; Bittencourt, C; Blackman, C; Vilic, T; Llobet, E
    Departamento: Enginyeria Electrònica, Elèctrica i Automàtica
    Autor/es de la URV: Annanouch, Fatima Ezahra / Llobet Valero, Eduard / VILIC, TONI TRAYCHOVA
    Palabras clave: Tungsten-oxide nanoneedles Tungsten oxide Performance Palladium oxide Nanoneedles Hydrogen sensor Gas Films Fabrication Au Aerosol-assisted cvd Aerosol-assisted chemical vapor desposition
    Resumen: © 2016 Elsevier B.V. We report the synthesis of palladium nanoparticle (NP) decorated WO 3 nanoneedles (NNs) employing a single-step, aerosol assisted chemical vapor deposition approach. Two different Pd precursors were investigated in view of optimizing the morphology and the gas sensing performance of the resulting nanostructured films. In particular, palladium acetylacetonate was found to be more suitable than ammonium hexachloropalladate for obtaining n-type WO 3 NNs uniformly decorated with well dispersed p-type PdO NPs. The active films could be directly deposited on the electrode area of microelectromechanical system-based resistive transducers. The morphology and chemical composition of the films was investigated by scanning electron microscopy, high-resolution transmission electron microscopy, Raman spectroscopy and X-ray photoelectron spectroscopy analysis. PdO-decorated WO 3 NNs show a response toward hydrogen that is about 680 times higher than that of bare WO 3 NNs. Finally, PdO-loaded sensors display extremely low-cross sensitivity to water vapor, which makes them remarkably immune to changes in the background humidity.
    Áreas temáticas: Surfaces, coatings and films Surfaces and interfaces Química Physics, condensed matter Physics, applied Metals and alloys Medicina ii Materials science, multidisciplinary Materials science, coatings & films Materials science Materials chemistry Materiais Interdisciplinar Ensino Engenharias iv Engenharias iii Engenharias ii Engenharias i Electronic, optical and magnetic materials Ciências biológicas ii Ciências biológicas i Ciências agrárias i Ciência de alimentos Biotecnología Astronomia / física
    Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/
    Direcció de correo del autor: fatimaezahra.annanouch@urv.cat eduard.llobet@urv.cat
    Identificador del autor: 0000-0003-1533-6482 0000-0001-6164-4342
    Fecha de alta del registro: 2024-09-07
    Versión del articulo depositado: info:eu-repo/semantics/acceptedVersion
    Enlace a la fuente original: https://www.sciencedirect.com/science/article/pii/S004060901630493X
    URL Documento de licencia: https://repositori.urv.cat/ca/proteccio-de-dades/
    Referencia al articulo segun fuente origial: Thin Solid Films. 618 238-245
    Referencia de l'ítem segons les normes APA: Annanouch, F E; Roso, S; Haddi, Z; Vallejos, S; Umek, P; Bittencourt, C; Blackman, C; Vilic, T; Llobet, E (2016). p-Type PdO nanoparticles supported on n-type WO 3 nanoneedles for hydrogen sensing. Thin Solid Films, 618(), 238-245. DOI: 10.1016/j.tsf.2016.08.053
    DOI del artículo: 10.1016/j.tsf.2016.08.053
    Entidad: Universitat Rovira i Virgili
    Año de publicación de la revista: 2016
    Tipo de publicación: Journal Publications
  • Palabras clave:

    Electronic, Optical and Magnetic Materials,Materials Chemistry,Materials Science,Materials Science, Coatings & Films,Materials Science, Multidisciplinary,Metals and Alloys,Physics, Applied,Physics, Condensed Matter,Surfaces and Interfaces,Surfaces, Coatings and Films
    Tungsten-oxide nanoneedles
    Tungsten oxide
    Performance
    Palladium oxide
    Nanoneedles
    Hydrogen sensor
    Gas
    Films
    Fabrication
    Au
    Aerosol-assisted cvd
    Aerosol-assisted chemical vapor desposition
    Surfaces, coatings and films
    Surfaces and interfaces
    Química
    Physics, condensed matter
    Physics, applied
    Metals and alloys
    Medicina ii
    Materials science, multidisciplinary
    Materials science, coatings & films
    Materials science
    Materials chemistry
    Materiais
    Interdisciplinar
    Ensino
    Engenharias iv
    Engenharias iii
    Engenharias ii
    Engenharias i
    Electronic, optical and magnetic materials
    Ciências biológicas ii
    Ciências biológicas i
    Ciências agrárias i
    Ciência de alimentos
    Biotecnología
    Astronomia / física
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