Articles producció científica> Enginyeria Electrònica, Elèctrica i Automàtica

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

  • Identification data

    Identifier: imarina:5610320
    Authors:
    Annanouch, F ERoso, SHaddi, ZVallejos, SUmek, PBittencourt, CBlackman, CVilic, TLlobet, E
    Abstract:
    © 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.
  • Others:

    Author, as appears in the article.: Annanouch, F E; Roso, S; Haddi, Z; Vallejos, S; Umek, P; Bittencourt, C; Blackman, C; Vilic, T; Llobet, E
    Department: Enginyeria Electrònica, Elèctrica i Automàtica
    URV's Author/s: Annanouch, Fatima Ezahra / Llobet Valero, Eduard / VILIC, TONI TRAYCHOVA
    Keywords: Tungsten-oxide nanoneedles Tungsten oxide Performance Palladium oxide Nanoneedles Hydrogen sensor Gas Films Fabrication Au Aerosol-assisted cvd Aerosol-assisted chemical vapor desposition
    Abstract: © 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.
    Thematic Areas: 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
    licence for use: https://creativecommons.org/licenses/by/3.0/es/
    Author's mail: fatimaezahra.annanouch@urv.cat eduard.llobet@urv.cat
    Author identifier: 0000-0003-1533-6482 0000-0001-6164-4342
    Record's date: 2024-09-07
    Papper version: info:eu-repo/semantics/acceptedVersion
    Link to the original source: https://www.sciencedirect.com/science/article/pii/S004060901630493X
    Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
    Papper original source: Thin Solid Films. 618 238-245
    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
    Article's DOI: 10.1016/j.tsf.2016.08.053
    Entity: Universitat Rovira i Virgili
    Journal publication year: 2016
    Publication Type: Journal Publications
  • Keywords:

    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
  • Documents:

  • Cerca a google

    Search to google scholar