Articles producció científica> Enginyeria Electrònica, Elèctrica i Automàtica

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

  • Dades identificatives

    Identificador: imarina:9332566
    Autors:
    Malik, Shuja BashirAnnanouch, Fatima EzahraLlobet, Eduard
    Resum:
    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).
  • Altres:

    Autor segons l'article: Malik, Shuja Bashir; Annanouch, Fatima Ezahra; Llobet, Eduard
    Departament: Enginyeria Electrònica, Elèctrica i Automàtica
    Autor/s de la URV: Annanouch, Fatima Ezahra / Llobet Valero, Eduard / Malik, Shuja Bashir
    Paraules clau: Tmds Spillover Performance Operating temperature Nanoparticles Gas sensors Gas sensor Decoration Aacvd
    Resum: 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).
    Àrees temàtiques: Química Physical and theoretical chemistry Materiais Instruments & instrumentation Farmacia Electrochemistry Ciencias sociales Ciência de alimentos Chemistry, analytical Astronomia / física Analytical chemistry
    Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/
    Adreça de correu electrònic de l'autor: fatimaezahra.annanouch@urv.cat shujabashir.malik@urv.cat eduard.llobet@urv.cat
    Identificador de l'autor: 0000-0003-1533-6482 0000-0001-6164-4342
    Data d'alta del registre: 2024-08-03
    Versió de l'article dipositat: info:eu-repo/semantics/publishedVersion
    Enllaç font original: https://www.mdpi.com/2227-9040/11/11/550
    URL Document de llicència: https://repositori.urv.cat/ca/proteccio-de-dades/
    Referència a l'article segons font original: Chemosensors (Basel). 11 (11): 550-
    Referència de l'ítem segons les normes 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
    DOI de l'article: 10.3390/chemosensors11110550
    Entitat: Universitat Rovira i Virgili
    Any de publicació de la revista: 2023
    Tipus de publicació: Journal Publications
  • Paraules clau:

    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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