Author, as appears in the article.: Navarrete, Eric; Bittencourt, Carla; Umek, Polona; Cossement, Damien; Guell, Frank; Llobet, Eduard
Department: Enginyeria Electrònica, Elèctrica i Automàtica
URV's Author/s: Llobet Valero, Eduard / Navarrete Gatell, Èric
Keywords: Zno nanowires Water Tungsten oxide Oxygen evolution No2 No 2 Nanowires Nanoparticles Iridium oxide Gas sensing Aerosol-assisted cvd
Abstract: © 2019 Elsevier B.V. Tungsten trioxide nanowires were grown employing aerosol assisted chemical vapor deposition (AACVD) and subsequently decorated with different loading levels of iridium oxide nanoparticles. AACVD has been already demonstrated to be a useful tool to load different ranges of nanoparticles on top of an already grown layer. This procedure enables growing the gas sensitive nanomaterials directly onto application substrates for the development of chemo-resistive gas sensors. The morphology and composition of the different materials were characterized via different techniques. It was found that iridium oxide loading resulted in remarkable changes in the morphology and defects of tungsten oxide nanowires. The gas sensing properties of such layers were studied towards ethanol or ammonia vapors, hydrogen, hydrogen sulfide, and nitrogen dioxide. The optimization of the operating temperature and the level of iridium oxide loading results in an improvement in the responsiveness and selectivity towards the species tested. In particular, a dramatically high increase in the response towards nitrogen dioxide is achieved. The mechanisms of gas sensing are discussed in detail.
Thematic Areas: Química Planejamento urbano e regional / demografia Odontología Metals and alloys Metallurgy & metallurgical engineering Mechanics of materials Mechanical engineering Materials science, multidisciplinary Materials science Materials chemistry Materiais Matemática / probabilidade e estatística Interdisciplinar Geociências Farmacia Ensino Engenharias iv Engenharias iii Engenharias ii Engenharias i Ciências biológicas i Ciências ambientais Ciências agrárias i Chemistry, physical Biotecnología Astronomia / física Antropologia / arqueologia Administração pública e de empresas, ciências contábeis e turismo
licence for use: https://creativecommons.org/licenses/by/3.0/es/
ISSN: 0925-8388
Author's mail: eric.navarrete@urv.cat eric.navarrete@urv.cat eduard.llobet@urv.cat
Author identifier: 0000-0001-6164-4342
Record's date: 2024-10-12
Papper version: info:eu-repo/semantics/acceptedVersion
Link to the original source: https://www.sciencedirect.com/science/article/pii/S0925838819334024?via%3Dihub
Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
Papper original source: Journal Of Alloys And Compounds. 812 (UNSP 152156): 152156-
APA: Navarrete, Eric; Bittencourt, Carla; Umek, Polona; Cossement, Damien; Guell, Frank; Llobet, Eduard (2020). Tungsten trioxide nanowires decorated with iridium oxide nanoparticles as gas sensing material. Journal Of Alloys And Compounds, 812(UNSP 152156), 152156-. DOI: 10.1016/j.jallcom.2019.152156
Article's DOI: 10.1016/j.jallcom.2019.152156
Entity: Universitat Rovira i Virgili
Journal publication year: 2020
Publication Type: Journal Publications
Repositori URV