Author, as appears in the article.: Gonzalez, Oriol; Roso, Sergio; Vilanova, Xavier; Llobet, Eduard
Department: Enginyeria Electrònica, Elèctrica i Automàtica
URV's Author/s: Llobet Valero, Eduard / Vilanova Salas, Javier
Keywords: Uv-activated metal oxide Synthesis (chemical) Pulsed uv-light Pulsed uv light Nitrogen oxides Nitrogen dioxides Nitrogen dioxide Nitrogen Nanosensors Metals Metal oxides Indium oxide Indium Heating Gas sensing electrodes Gas sensing Gas detectors Dynamic gas sensing Chemical sensors Alumina uv-activated metal oxide nitrogen dioxide indium oxide dynamic gas sensing
Abstract: We report on the use of combined heating and pulsed UV light activation of indium oxide gas sensors for enhancing their performance in the detection of nitrogen dioxide in air. Indium oxide nano-octahedra were synthesized at high temperature (900 °C) via vapour-phase transport and screen-printed onto alumina transducers that comprised interdigitated electrodes and a heating resistor. Compared to the standard, constant temperature operation of the sensor, mild heating (e.g., 100 °C) together with pulsed UV light irradiation employing a commercially available, 325 nm UV diode (square, 1 min period, 15 mA drive current signal), results in an up to 80-fold enhancement in sensitivity to nitrogen dioxide. Furthermore, this combined operation method allows for making savings in power consumption that range from 35% to over 80%. These results are achieved by exploiting the dynamics of sensor response under pulsed UV light, which convey important information for the quantitative analysis of nitrogen dioxide. © 2016 Gonzalez et al.
Thematic Areas: Química Physics, applied Physics and astronomy (miscellaneous) Physics and astronomy (all) Nanoscience and nanotechnology Nanoscience & nanotechnology Materials science, multidisciplinary Materials science (miscellaneous) Materials science (all) Interdisciplinar General physics and astronomy General materials science Engenharias iv Engenharias iii Electrical and electronic engineering Astronomia / física
licence for use: https://creativecommons.org/licenses/by/3.0/es/
Author's mail: eduard.llobet@urv.cat xavier.vilanova@urv.cat
Author identifier: 0000-0001-6164-4342 0000-0002-6245-7933
Record's date: 2024-10-12
Papper version: info:eu-repo/semantics/publishedVersion
Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
Papper original source: Beilstein Journal Of Nanotechnology. 7 (1): 1507-1518
APA: Gonzalez, Oriol; Roso, Sergio; Vilanova, Xavier; Llobet, Eduard (2016). Enhanced detection of nitrogen dioxide via combined heating and pulsed UV operation of indium oxide nano-octahedra. Beilstein Journal Of Nanotechnology, 7(1), 1507-1518. DOI: 10.3762/bjnano.7.144
Entity: Universitat Rovira i Virgili
Journal publication year: 2016
Publication Type: Journal Publications
Repositori URV