Articles producció científica> Enginyeria Electrònica, Elèctrica i Automàtica

Pd-Nanoparticle-Decorated Multilayered MoS2 Sheets for Highly Sensitive Hydrogen Sensing

  • Identification data

    Identifier: imarina:9332566
  • Authors:

    Malik, Shuja Bashir
    Annanouch, Fatima Ezahra
    Llobet, Eduard
    Chemosensors (Basel)
    10.3390/chemosensors11110550
    Chemosensors (Basel). 11 (11): 550-
  • Others:

    Author, as appears in the article.: Malik, Shuja Bashir; Annanouch, Fatima Ezahra; Llobet, Eduard
    Department: Enginyeria Electrònica, Elèctrica i Automàtica
    URV's Author/s: Annanouch, Fatima Ezahra / Llobet Valero, Eduard / Malik, Shuja Bashir
    Keywords: Tmds Spillover Performance Operating temperature Nanoparticles Gas sensors Gas sensor Decoration Aacvd
    Abstract: In this work, efficient hydrogen gas sensors based on multilayered p-type bare MoS2 and Pd-decorated MoS2 were fabricated. MoS2 was deposited onto alumina transducers using an airbrushing technique to be used as a sensing material. Aerosol-assisted chemical vapor deposition (AACVD) was used to decorate layered MoS2 with Pd nanoparticles at 250 degrees C. The bare and Pd-decorated MoS2 was characterized using field emission scanning electron microscopy (FESEM), high-resolution transmission electron microscopy (HR-TEM), X-ray diffraction (XRD), and Raman spectroscopy. The characterization results reveal the multilayered crystalline structure of MoS2 with successful Pd decoration. The size of the Pd nanoparticles ranges from 15 nm to 23 nm. Gas sensing studies reveal that a maximum response of 55% is achieved for Pd-decorated MoS2 operated at 150 degrees C to 100 ppm of H-2, which is clearly below the explosive limit (4%) in air. The higher sensitivity due to Pd nanoparticle decoration was owed to a spillover effect. This study reveals that the sensitivity of the sensors is highly dependent on the amount of Pd decoration. Moreover, sensor responses increase slightly when exposed to 50% relative humidity (RH at 25 degrees C).
    Thematic Areas: Química Physical and theoretical chemistry Materiais Instruments & instrumentation Farmacia Electrochemistry Ciencias sociales Ciência de alimentos Chemistry, analytical Astronomia / física Analytical chemistry
    licence for use: https://creativecommons.org/licenses/by/3.0/es/
    Author's mail: fatimaezahra.annanouch@urv.cat shujabashir.malik@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/publishedVersion
    Link to the original source: https://www.mdpi.com/2227-9040/11/11/550
    Licence document URL: http://repositori.urv.cat/ca/proteccio-de-dades/
    Papper original source: Chemosensors (Basel). 11 (11): 550-
    APA: Malik, Shuja Bashir; Annanouch, Fatima Ezahra; Llobet, Eduard (2023). Pd-Nanoparticle-Decorated Multilayered MoS2 Sheets for Highly Sensitive Hydrogen Sensing. Chemosensors (Basel), 11(11), 550-. DOI: 10.3390/chemosensors11110550
    Article's DOI: 10.3390/chemosensors11110550
    Entity: Universitat Rovira i Virgili
    Journal publication year: 2023
    Publication Type: Journal Publications
  • Keywords:

    Analytical Chemistry,Chemistry, Analytical,Electrochemistry,Instruments & Instrumentation,Physical and Theoretical Chemistry
    Tmds
    Spillover
    Performance
    Operating temperature
    Nanoparticles
    Gas sensors
    Gas sensor
    Decoration
    Aacvd
    Química
    Physical and theoretical chemistry
    Materiais
    Instruments & instrumentation
    Farmacia
    Electrochemistry
    Ciencias sociales
    Ciência de alimentos
    Chemistry, analytical
    Astronomia / física
    Analytical chemistry
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