Author, as appears in the article.: Malik, SB; Annanouch, FE; Llobet, E
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 shujabashir.malik@urv.cat
Author identifier: 0000-0001-6164-4342
Record's date: 2024-01-13
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):
APA: Malik, SB; Annanouch, FE; Llobet, E (2023). Pd-Nanoparticle-Decorated Multilayered MoS2 Sheets for Highly Sensitive Hydrogen Sensing. Chemosensors (Basel), 11(11), -. DOI: 10.3390/chemosensors11110550
Article's DOI: 10.3390/chemosensors11110550
Entity: Universitat Rovira i Virgili
Journal publication year: 2023
Publication Type: Journal Publications
Repositori URV