Autor segons l'article: Navarrete, Eric; Bittencourt, Carla; Umek, Polona; Llobet, Eduard
Departament: Enginyeria Electrònica, Elèctrica i Automàtica
Autor/s de la URV: Llobet Valero, Eduard / Navarrete Gatell, Èric
Paraules clau: Thin-films Temperature Sensors Sensitivity Performance P-type Level Aerosol-assisted cvd
Resum: © 2018 The Royal Society of Chemistry. Here, we show that the aerosol assisted chemical vapor deposition process is suitable for growing single crystalline tungsten oxide nanowires loaded with nickel oxide nanoparticles. This method allows achieving of a wide range of nickel oxide loadings on tungsten oxide nanowires with high effectivity. It also allows for the direct growth of these nanomaterials onto application substrates for developing resistive metal oxide gas sensors. Different morphological and compositional analysis tools have been employed for the characterization of the nanomaterials, finding that nickel oxide nanoparticles are homogeneously distributed over the tungsten oxide nanowire surface. However, at high Ni loadings, even though the size of the nanoparticles remains unchanged, they form agglomerates, especially at the tips of tungsten nanowires. The gas sensing properties of the different nanomaterials grown towards methane, ethanol, nitrogen dioxide and hydrogen sulfide have been studied. The optimized loading of tungsten oxide with nickel oxide nanoparticles has a positive effect on increasing the sensitivity and selectivity of the resulting nanomaterial to hydrogen sulfide, reaching a five-fold increase in the response towards this species. This improvement is attributed to combined chemical and electronic sensitization effects. Therefore, these nanomaterials show good potential for developing inexpensive resistive sensors able to monitor the presence of hydrogen sulfide in the environment.
Àrees temàtiques: Química Physics, applied Odontología Materials science, multidisciplinary Materials chemistry Materiais Interdisciplinar General chemistry Engenharias iii Ciências ambientais Ciências agrárias i Chemistry (miscellaneous) Chemistry (all) Biotecnología Astronomia / física
Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/
ISSN: 20507526
Adreça de correu electrònic de l'autor: eric.navarrete@urv.cat eric.navarrete@urv.cat eduard.llobet@urv.cat
Identificador de l'autor: 0000-0001-6164-4342
Data d'alta del registre: 2024-10-12
Versió de l'article dipositat: info:eu-repo/semantics/submittedVersion
Enllaç font original: https://pubs.rsc.org/en/content/articlelanding/2018/tc/c8tc00571k
URL Document de llicència: https://repositori.urv.cat/ca/proteccio-de-dades/
Referència a l'article segons font original: Journal Of Materials Chemistry c. 6 (19): 5181-5192
Referència de l'ítem segons les normes APA: Navarrete, Eric; Bittencourt, Carla; Umek, Polona; Llobet, Eduard (2018). AACVD and gas sensing properties of nickel oxide nanoparticle decorated tungsten oxide nanowires. Journal Of Materials Chemistry c, 6(19), 5181-5192. DOI: 10.1039/c8tc00571k
DOI de l'article: 10.1039/c8tc00571k
Entitat: Universitat Rovira i Virgili
Any de publicació de la revista: 2018
Tipus de publicació: Journal Publications