Autor segons l'article: Malik, SB; Annanouch, FE; Llobet, E
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 shujabashir.malik@urv.cat
Identificador de l'autor: 0000-0001-6164-4342
Data d'alta del registre: 2024-01-13
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: http://repositori.urv.cat/ca/proteccio-de-dades/
Referència a l'article segons font original: Chemosensors (Basel). 11 (11):
Referència de l'ítem segons les normes 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
DOI de l'article: 10.3390/chemosensors11110550
Entitat: Universitat Rovira i Virgili
Any de publicació de la revista: 2023
Tipus de publicació: Journal Publications
Repositori URV