Articles producció científica> Enginyeria Electrònica, Elèctrica i Automàtica

Temperature-Dependent NO2 Sensing Mechanisms over Indium Oxide

  • Identification data

    Identifier: imarina:9282664
    Handle: https://hdl.handle.net/20.500.11797/imarina9282664
    Authors:
    Roso, SergioDegler, DavidLlobet, EduardBarsan, NicolaeUrakawa, Atsushi
    Abstract:
    The surface species responsible for NO2 gas sensing over indium oxide was studied by operando DRIFTS coupled to a multivariate spectral analysis. It revealed the important roles of surface nitrites on the temperature-dependent gas sensing mechanism and the interaction of such nitrites with surface hydroxyls. A highly hydroxylated surface with high concentration of surface adsorbed H2O is beneficial to enhance the concentration of adsorbed NO2, present as nitrites, thus explaining superior sensing response at lower operating temperatures. © 2017 American Chemical Society.

  • Others:

    Author, as appears in the article.: Roso, Sergio; Degler, David; Llobet, Eduard; Barsan, Nicolae; Urakawa, Atsushi
    Department: Enginyeria Electrònica, Elèctrica i Automàtica
    URV's Author/s: Llobet Valero, Eduard
    Keywords: Temperature dependent Spectrum analysis Operating temperature No2 No 2 Nitrogen oxides Multivariate spectral analysis Multivariate analysis Multivariant analysis Multi variate analysis Indium compounds In2o3 In o 2 3 Hydroxylated surfaces Gas sensor Gas sensing mechanism Gas sensing electrodes Gas detectors Drifts Chemical sensors Chemical detection no2 in2o3 gas sensor drifts
    Abstract: The surface species responsible for NO2 gas sensing over indium oxide was studied by operando DRIFTS coupled to a multivariate spectral analysis. It revealed the important roles of surface nitrites on the temperature-dependent gas sensing mechanism and the interaction of such nitrites with surface hydroxyls. A highly hydroxylated surface with high concentration of surface adsorbed H2O is beneficial to enhance the concentration of adsorbed NO2, present as nitrites, thus explaining superior sensing response at lower operating temperatures. © 2017 American Chemical Society.
    Thematic Areas: Process chemistry and technology Nanoscience & nanotechnology Instrumentation Fluid flow and transfer processes Engenharias iii Chemistry, multidisciplinary Chemistry, analytical Bioengineering
    licence for use: https://creativecommons.org/licenses/by/3.0/es/
    Author's mail: eduard.llobet@urv.cat
    Author identifier: 0000-0001-6164-4342
    Record's date: 2024-10-12
    Papper version: info:eu-repo/semantics/acceptedVersion
    Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
    Papper original source: Acs Sensors. 2 (9): 1272-1277
    APA: Roso, Sergio; Degler, David; Llobet, Eduard; Barsan, Nicolae; Urakawa, Atsushi (2017). Temperature-Dependent NO2 Sensing Mechanisms over Indium Oxide. Acs Sensors, 2(9), 1272-1277. DOI: 10.1021/acssensors.7b00504
    Entity: Universitat Rovira i Virgili
    Journal publication year: 2017
    Publication Type: Journal Publications

  • Keywords:

    Bioengineering,Chemistry, Analytical,Chemistry, Multidisciplinary,Fluid Flow and Transfer Processes,Instrumentation,Nanoscience & Nanotechnology,Process Chemistry and Technology
    Temperature dependent
    Spectrum analysis
    Operating temperature
    No2
    No 2
    Nitrogen oxides
    Multivariate spectral analysis
    Multivariate analysis
    Multivariant analysis
    Multi variate analysis
    Indium compounds
    In2o3
    In o 2 3
    Hydroxylated surfaces
    Gas sensor
    Gas sensing mechanism
    Gas sensing electrodes
    Gas detectors
    Drifts
    Chemical sensors
    Chemical detection
    no2
    in2o3
    gas sensor
    drifts
    Process chemistry and technology
    Nanoscience & nanotechnology
    Instrumentation
    Fluid flow and transfer processes
    Engenharias iii
    Chemistry, multidisciplinary
    Chemistry, analytical
    Bioengineering

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