Autor segons l'article: Annanouch F; Roso S; Haddi Z; Vallejos S; Umek P; Bittencourt C; Blackman C; Vilic T; Llobet E
Departament: Enginyeria Electrònica, Elèctrica i Automàtica
Autor/s de la URV: Annanouch, Fatima Ezahra / Llobet Valero, Eduard / VILIC, TONI TRAYCHOVA
Paraules clau: Aerosol-assisted chemical vapor desposition Aerosol-assisted cvd Au Fabrication Films Gas Hydrogen sensor Nanoneedles Palladium oxide Performance Tungsten oxide Tungsten-oxide nanoneedles
Resum: © 2016 Elsevier B.V. We report the synthesis of palladium nanoparticle (NP) decorated WO 3 nanoneedles (NNs) employing a single-step, aerosol assisted chemical vapor deposition approach. Two different Pd precursors were investigated in view of optimizing the morphology and the gas sensing performance of the resulting nanostructured films. In particular, palladium acetylacetonate was found to be more suitable than ammonium hexachloropalladate for obtaining n-type WO 3 NNs uniformly decorated with well dispersed p-type PdO NPs. The active films could be directly deposited on the electrode area of microelectromechanical system-based resistive transducers. The morphology and chemical composition of the films was investigated by scanning electron microscopy, high-resolution transmission electron microscopy, Raman spectroscopy and X-ray photoelectron spectroscopy analysis. PdO-decorated WO 3 NNs show a response toward hydrogen that is about 680 times higher than that of bare WO 3 NNs. Finally, PdO-loaded sensors display extremely low-cross sensitivity to water vapor, which makes them remarkably immune to changes in the background humidity.
Àrees temàtiques: Astronomia / física Biotecnología Ciência de alimentos Ciências agrárias i Ciências biológicas i Ciências biológicas ii Electronic, optical and magnetic materials Engenharias i Engenharias ii Engenharias iii Engenharias iv Ensino Interdisciplinar Materiais Materials chemistry Materials science Materials science, coatings & films Materials science, multidisciplinary Medicina ii Metals and alloys Physics, applied Physics, condensed matter Química Surfaces and interfaces Surfaces, coatings and films
Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/
Adreça de correu electrònic de l'autor: eduard.llobet@urv.cat fatimaezahra.annanouch@urv.cat
Identificador de l'autor: 0000-0001-6164-4342
Data d'alta del registre: 2023-09-16
Versió de l'article dipositat: info:eu-repo/semantics/acceptedVersion
Enllaç font original: https://www.sciencedirect.com/science/article/pii/S004060901630493X
Referència a l'article segons font original: Thin Solid Films. 618 238-245
Referència de l'ítem segons les normes APA: Annanouch F; Roso S; Haddi Z; Vallejos S; Umek P; Bittencourt C; Blackman C; Vilic T; Llobet E (2016). p-Type PdO nanoparticles supported on n-type WO 3 nanoneedles for hydrogen sensing. Thin Solid Films, 618(), 238-245. DOI: 10.1016/j.tsf.2016.08.053
URL Document de llicència: http://repositori.urv.cat/ca/proteccio-de-dades/
DOI de l'article: 10.1016/j.tsf.2016.08.053
Entitat: Universitat Rovira i Virgili
Any de publicació de la revista: 2016
Tipus de publicació: Journal Publications
Repositori URV