Autor segons l'article: Annanouch, Fatima E; Haddi, Zouhair; Vallejos, Stella; Umek, Polona; Guttmann, Peter; Bittencourt, Carla; Llobet, Eduard
Departament: Enginyeria Electrònica, Elèctrica i Automàtica
Autor/s de la URV: Annanouch, Fatima Ezahra / Llobet Valero, Eduard
Paraules clau: Tungsten compounds; Sulfur compounds; P-n heterojunctions; Oxide minerals; Nanoparticles; Nanoneedles; Nanocrystalline materials; Moderate temperature; Low detection limit; Hybrid nanomaterials; Hybrid materials; Heterojunctions; Gas sensor; Gas sensing electrodes; Gas detectors; Functionalizations; Functionalization; Cost effectiveness; Copper oxides; Copper oxide nanoparticles; Composition analysis; Chemical vapor deposition; Chemical sensors; Aerosols; Aerosol-assisted cvd; Aerosol-assisted chemical vapor depositions; nanoneedles; gas sensor; functionalization; aerosol-assisted cvd
Resum: A gas-sensitive hybrid material consisting of Cu2O nanoparticle-decorated WO3 nanoneedles is successfully grown for the first time in a single step via aerosol-assisted chemical vapor deposition. Morphological, structural, and composition analyses show that our method is effective for growing single-crystalline, n-type WO3 nanoneedles decorated with p-type Cu2O nanoparticles at moderate temperatures (i.e., 380 °C), with cost effectiveness and short fabrication times, directly onto microhot plate transducer arrays with the view of obtaining gas sensors. The gas-sensing studies performed show that this hybrid nanomaterial has excellent sensitivity and selectivity to hydrogen sulfide (7-fold increase in response compared with that of pristine WO3 nanoneedles) and a low detection limit (below 300 ppb of H2S), together with unprecedented fast response times (2 s) and high immunity to changes in the background humidity. These superior properties arise because of the multiple p-n heterojunctions created at the nanoscale in our hybrid nanomaterial. © 2015 American Chemical Society.
Àrees temàtiques: Química; Nanoscience and nanotechnology; Nanoscience & nanotechnology; Medicine (miscellaneous); Medicina veterinaria; Medicina ii; Medicina i; Materials science, multidisciplinary; Materials science (miscellaneous); Materials science (all); Materiais; Interdisciplinar; General materials science; Farmacia; Engenharias iv; Engenharias iii; Engenharias ii; Economia; Ciências biológicas iii; Ciências biológicas ii; Ciências biológicas i; Ciências ambientais; Ciências agrárias i; Biotecnología; Biodiversidade; Astronomia / física; Arquitetura, urbanismo e design
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; eduard.llobet@urv.cat
Data d'alta del registre: 2024-09-07
Versió de l'article dipositat: info:eu-repo/semantics/acceptedVersion
Enllaç font original: https://pubs.acs.org/doi/abs/10.1021/acsami.5b00411
URL Document de llicència: https://repositori.urv.cat/ca/proteccio-de-dades/
Referència a l'article segons font original: Acs Applied Materials & Interfaces. 7 (12): 6842-6851
Referència de l'ítem segons les normes APA: Annanouch, Fatima E; Haddi, Zouhair; Vallejos, Stella; Umek, Polona; Guttmann, Peter; Bittencourt, Carla; Llobet, Eduard (2015). Aerosol-assisted CVD-grown WO3 nanoneedles decorated with copper oxide nanoparticles for the selective and humidity-resilient detection of H2S. Acs Applied Materials & Interfaces, 7(12), 6842-6851. DOI: 10.1021/acsami.5b00411
DOI de l'article: 10.1021/acsami.5b00411
Entitat: Universitat Rovira i Virgili
Any de publicació de la revista: 2015
Tipus de publicació: Journal Publications
Repositori URV