Articles producció científica> Enginyeria Electrònica, Elèctrica i Automàtica

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

  • Dades identificatives

    Identificador: imarina:5610320
    Autors:
    Annanouch, F ERoso, SHaddi, ZVallejos, SUmek, PBittencourt, CBlackman, CVilic, TLlobet, E
    Resum:
    © 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.
  • Altres:

    Autor segons l'article: Annanouch, F E; Roso, S; Haddi, Z; Vallejos, S; Umek, P; Bittencourt, C; Blackman, C; Vilic, T; Llobet, E
    Departament: Enginyeria Electrònica, Elèctrica i Automàtica
    Autor/s de la URV: Annanouch, Fatima Ezahra / Llobet Valero, Eduard / VILIC, TONI TRAYCHOVA
    Paraules clau: Tungsten-oxide nanoneedles Tungsten oxide Performance Palladium oxide Nanoneedles Hydrogen sensor Gas Films Fabrication Au Aerosol-assisted cvd Aerosol-assisted chemical vapor desposition
    Resum: © 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.
    Àrees temàtiques: 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
    Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/
    Adreça de correu electrònic de l'autor: fatimaezahra.annanouch@urv.cat eduard.llobet@urv.cat
    Identificador de l'autor: 0000-0003-1533-6482 0000-0001-6164-4342
    Data d'alta del registre: 2024-09-07
    Versió de l'article dipositat: info:eu-repo/semantics/acceptedVersion
    Enllaç font original: https://www.sciencedirect.com/science/article/pii/S004060901630493X
    URL Document de llicència: https://repositori.urv.cat/ca/proteccio-de-dades/
    Referència a l'article segons font original: Thin Solid Films. 618 238-245
    Referència 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 de l'article: 10.1016/j.tsf.2016.08.053
    Entitat: Universitat Rovira i Virgili
    Any de publicació de la revista: 2016
    Tipus de publicació: Journal Publications
  • Paraules clau:

    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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