Articles producció científica> Enginyeria Electrònica, Elèctrica i Automàtica

Aerosol-assisted CVD-grown WO3 nanoneedles decorated with copper oxide nanoparticles for the selective and humidity-resilient detection of H2S

  • Identification data

    Identifier: imarina:9282545
  • Authors:

    Annanouch, Fatima E
    Haddi, Zouhair
    Vallejos, Stella
    Umek, Polona
    Guttmann, Peter
    Bittencourt, Carla
    Llobet, Eduard
    Acs Applied Materials & Interfaces
    10.1021/acsami.5b00411
    Acs Applied Materials & Interfaces. 7 (12): 6842-6851
  • Others:

    Author, as appears in the article.: Annanouch, Fatima E; Haddi, Zouhair; Vallejos, Stella; Umek, Polona; Guttmann, Peter; Bittencourt, Carla; Llobet, Eduard
    Department: Enginyeria Electrònica, Elèctrica i Automàtica
    URV's Author/s: Annanouch, Fatima Ezahra / Llobet Valero, Eduard
    Keywords: Tungsten compounds Sulfur compounds P-n heterojunctions Oxide minerals Nanoparticles Nanoneedles Nanocrystalline materials Moderate temperature Low detection limit Hybrid nanomaterials Hybrid materials Heterojunctions Gas sensor Gas sensing electrodes Gas detectors Functionalizations Functionalization Cost effectiveness Copper oxides Copper oxide nanoparticles Composition analysis Chemical vapor deposition Chemical sensors Aerosols Aerosol-assisted cvd Aerosol-assisted chemical vapor depositions nanoneedles gas sensor functionalization aerosol-assisted cvd
    Abstract: A gas-sensitive hybrid material consisting of Cu2O nanoparticle-decorated WO3 nanoneedles is successfully grown for the first time in a single step via aerosol-assisted chemical vapor deposition. Morphological, structural, and composition analyses show that our method is effective for growing single-crystalline, n-type WO3 nanoneedles decorated with p-type Cu2O nanoparticles at moderate temperatures (i.e., 380 °C), with cost effectiveness and short fabrication times, directly onto microhot plate transducer arrays with the view of obtaining gas sensors. The gas-sensing studies performed show that this hybrid nanomaterial has excellent sensitivity and selectivity to hydrogen sulfide (7-fold increase in response compared with that of pristine WO3 nanoneedles) and a low detection limit (below 300 ppb of H2S), together with unprecedented fast response times (2 s) and high immunity to changes in the background humidity. These superior properties arise because of the multiple p-n heterojunctions created at the nanoscale in our hybrid nanomaterial. © 2015 American Chemical Society.
    Thematic Areas: Química Nanoscience and nanotechnology Nanoscience & nanotechnology Medicine (miscellaneous) Medicina veterinaria Medicina ii Medicina i Materials science, multidisciplinary Materials science (miscellaneous) Materials science (all) Materiais Interdisciplinar General materials science Farmacia Engenharias iv Engenharias iii Engenharias ii Economia Ciências biológicas iii Ciências biológicas ii Ciências biológicas i Ciências ambientais Ciências agrárias i Biotecnología Biodiversidade Astronomia / física Arquitetura, urbanismo e design
    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: 2024-07-20
    Papper version: info:eu-repo/semantics/acceptedVersion
    Link to the original source: https://pubs.acs.org/doi/abs/10.1021/acsami.5b00411
    Licence document URL: http://repositori.urv.cat/ca/proteccio-de-dades/
    Papper original source: Acs Applied Materials & Interfaces. 7 (12): 6842-6851
    APA: Annanouch, Fatima E; Haddi, Zouhair; Vallejos, Stella; Umek, Polona; Guttmann, Peter; Bittencourt, Carla; Llobet, Eduard (2015). Aerosol-assisted CVD-grown WO3 nanoneedles decorated with copper oxide nanoparticles for the selective and humidity-resilient detection of H2S. Acs Applied Materials & Interfaces, 7(12), 6842-6851. DOI: 10.1021/acsami.5b00411
    Article's DOI: 10.1021/acsami.5b00411
    Entity: Universitat Rovira i Virgili
    Journal publication year: 2015
    Publication Type: Journal Publications
  • Keywords:

    Materials Science (Miscellaneous),Materials Science, Multidisciplinary,Medicine (Miscellaneous),Nanoscience & Nanotechnology,Nanoscience and Nanotechnology
    Tungsten compounds
    Sulfur compounds
    P-n heterojunctions
    Oxide minerals
    Nanoparticles
    Nanoneedles
    Nanocrystalline materials
    Moderate temperature
    Low detection limit
    Hybrid nanomaterials
    Hybrid materials
    Heterojunctions
    Gas sensor
    Gas sensing electrodes
    Gas detectors
    Functionalizations
    Functionalization
    Cost effectiveness
    Copper oxides
    Copper oxide nanoparticles
    Composition analysis
    Chemical vapor deposition
    Chemical sensors
    Aerosols
    Aerosol-assisted cvd
    Aerosol-assisted chemical vapor depositions
    nanoneedles
    gas sensor
    functionalization
    aerosol-assisted cvd
    Química
    Nanoscience and nanotechnology
    Nanoscience & nanotechnology
    Medicine (miscellaneous)
    Medicina veterinaria
    Medicina ii
    Medicina i
    Materials science, multidisciplinary
    Materials science (miscellaneous)
    Materials science (all)
    Materiais
    Interdisciplinar
    General materials science
    Farmacia
    Engenharias iv
    Engenharias iii
    Engenharias ii
    Economia
    Ciências biológicas iii
    Ciências biológicas ii
    Ciências biológicas i
    Ciências ambientais
    Ciências agrárias i
    Biotecnología
    Biodiversidade
    Astronomia / física
    Arquitetura, urbanismo e design
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