Articles producció científica> Enginyeria Electrònica, Elèctrica i Automàtica

PdO and PtO loaded WS2 boosts NO2 gas sensing characteristics at room temperature

  • Identification data

    Identifier: imarina:9262491
    Handle: http://hdl.handle.net/20.500.11797/imarina9262491
  • Authors:

    Alagh A
    Annanouch FE
    Youssef KA
    Bittencourt C
    Güell F
    Martínez-Alanis PR
    Reguant M
    Llobet E
  • Others:

    Author, as appears in the article.: Alagh A; Annanouch FE; Youssef KA; Bittencourt C; Güell F; Martínez-Alanis PR; Reguant M; Llobet E
    Department: Enginyeria Electrònica, Elèctrica i Automàtica
    URV's Author/s: LLOBET VALERO, EDUARD
    Project code: Grant agreement No. 713679
    Keywords: Tungsten disulphide Tmds Gas sensors Functionalization Cvd Aacvd
    Abstract: In this work tungsten disulphide nanostructures loaded with platinum-oxide (PtO), or palladium-oxide (PdO) were grown directly onto alumina substrates. This was achieved using a combination of aerosol-assisted chemical vapour deposition (AA-CVD) method with atmospheric pressure CVD technique. At first, tungsten oxide nanowires loaded with either PtO or PdO nanoparticles were successfully co-deposited via AA-CVD followed by sulfurization at 900 °C in the next step. The morphological, structural, and chemical characteristics were investigated using FESEM, TEM, XRD, XPS and Raman spectroscopy. The results confirm the presence of PdO and PtO in the WS2 host matrix. Gas sensing attributes of loaded and pristine WS2 sensors were investigated, at room temperature, towards different analytes (NO2, NH3, H2 etc.). Both pristine and metal-oxide loaded WS2 gas sensors show remarkable responses at room temperature towards NO2 detection. Further, the loaded sensors demonstrated stable, reproducible, ultrasensitive, and enhanced gas sensing response, with a detection limit below 25 ppb. Additionally, the effect of ambient humidity on the sensing response of both loaded and pristine sensors was investigated for NO2 gas. The response of PtO loaded sensor considerably decreased in humid environments, while the response for pristine and PdO loaded sensors increased. However, slightly heating (at 100 °C) the sensors, suppresses the influence of humidity. Finally, the long-term stability of different sensors is investigated, and the results demonstrate high stability with repeatable results after 6 weeks of gas sensing tests. This work exploits an attractive pathway to add functionality in the transition metal dichalcogenide host matrix.
    Thematic Areas: Surfaces, coatings and films Química Odontología Nutrição Metals and alloys Medicina ii Medicina i Materials chemistry Materiais Interdisciplinar Instruments & instrumentation Instrumentation Farmacia Engenharias iv Engenharias iii Engenharias ii Engenharias i Electronic, optical and magnetic materials Electrochemistry Electrical and electronic engineering Educação física Educação Economia Condensed matter physics Ciências biológicas iii Ciências biológicas ii Ciências biológicas i Ciências ambientais Ciências agrárias i Ciência de alimentos Ciência da computação Chemistry, analytical Biotecnología Biodiversidade Astronomia / física
    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: 2022-06-04
    Papper version: info:eu-repo/semantics/publishedVersion
    Link to the original source: https://www.sciencedirect.com/science/article/pii/S0925400522005470
    Funding program: Marie Skłodowska-Curie Actions - European Union's Horizon 2020 research and innovation programme
    Papper original source: Sensors And Actuators B-Chemical. 364
    APA: Alagh A; Annanouch FE; Youssef KA; Bittencourt C; Güell F; Martínez-Alanis PR; Reguant M; Llobet E (2022). PdO and PtO loaded WS2 boosts NO2 gas sensing characteristics at room temperature. Sensors And Actuators B-Chemical, 364(), -. DOI: 10.1016/j.snb.2022.131905
    Licence document URL: http://repositori.urv.cat/ca/proteccio-de-dades/
    Acronym: MFP
    Article's DOI: 10.1016/j.snb.2022.131905
    Entity: Universitat Rovira i Virgili
    Journal publication year: 2022
    Funding program action: Martí i Franquès COFUND Doctoral Programme
    Publication Type: Journal Publications
  • Keywords:

    Chemistry, Analytical,Condensed Matter Physics,Electrical and Electronic Engineering,Electrochemistry,Electronic, Optical and Magnetic Materials,Instrumentation,Instruments & Instrumentation,Materials Chemistry,Metals and Alloys,Surfaces, Coatings and Films
    Tungsten disulphide
    Tmds
    Gas sensors
    Functionalization
    Cvd
    Aacvd
    Surfaces, coatings and films
    Química
    Odontología
    Nutrição
    Metals and alloys
    Medicina ii
    Medicina i
    Materials chemistry
    Materiais
    Interdisciplinar
    Instruments & instrumentation
    Instrumentation
    Farmacia
    Engenharias iv
    Engenharias iii
    Engenharias ii
    Engenharias i
    Electronic, optical and magnetic materials
    Electrochemistry
    Electrical and electronic engineering
    Educação física
    Educação
    Economia
    Condensed matter physics
    Ciências biológicas iii
    Ciências biológicas ii
    Ciências biológicas i
    Ciências ambientais
    Ciências agrárias i
    Ciência de alimentos
    Ciência da computação
    Chemistry, analytical
    Biotecnología
    Biodiversidade
    Astronomia / física
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