Autor según el artículo: Malik, Shuja Bashir; Annanouch, Fatima Ezahra; Llobet, Eduard
Departamento: Enginyeria Electrònica, Elèctrica i Automàtica
Autor/es de la URV: Annanouch, Fatima Ezahra / Llobet Valero, Eduard / Malik, Shuja Bashir
Palabras clave: Tmds Spillover Performance Operating temperature Nanoparticles Gas sensors Gas sensor Decoration Aacvd
Resumen: 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).
Áreas temáticas: Química Physical and theoretical chemistry Materiais Instruments & instrumentation Farmacia Electrochemistry Ciencias sociales Ciência de alimentos Chemistry, analytical Astronomia / física Analytical chemistry
Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/
Direcció de correo del autor: fatimaezahra.annanouch@urv.cat shujabashir.malik@urv.cat eduard.llobet@urv.cat
Identificador del autor: 0000-0003-1533-6482 0000-0001-6164-4342
Fecha de alta del registro: 2024-08-03
Versión del articulo depositado: info:eu-repo/semantics/publishedVersion
Enlace a la fuente original: https://www.mdpi.com/2227-9040/11/11/550
URL Documento de licencia: https://repositori.urv.cat/ca/proteccio-de-dades/
Referencia al articulo segun fuente origial: Chemosensors (Basel). 11 (11): 550-
Referencia 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 del artículo: 10.3390/chemosensors11110550
Entidad: Universitat Rovira i Virgili
Año de publicación de la revista: 2023
Tipo de publicación: Journal Publications