| Title |
Selectivity of tungsten oxide synthesized by Sol-Gel method towards some volatile organic compounds and gaseous materials in a broad range of temperatures / |
| Authors |
Ramanavičius, Simonas ; Petrulevičienė, Milda ; Juodkazytė, Jurga ; Grigucevičienė, Asta ; Ramanavičius, Arūnas |
| DOI |
10.3390/ma13030523 |
| Full Text |
|
| Is Part of |
Materials.. Basel : MDPI AG. 2020, vol. 13, iss. 3, art. no. 523, p. 1-17.. eISSN 1996-1944 |
| Keywords [eng] |
non-stoichiometric tungsten (VI) oxide (WO3−x) ; gas sensors ; sol-gel technique ; volatile organic compounds (VOC) ; reducing gases ; temperature dependent sensitivity and selectivity |
| Abstract [eng] |
In this research, the investigation of sensing properties of non-stoichiometric WO3 (WO3−x) film towards some volatile organic compounds (VOC) (namely: Methanol, ethanol, isopropanol, acetone) and ammonia gas are reported. Sensors were tested at several temperatures within the interval ranging from a relatively low temperature of 60 up to 270 ◦C. Significant variation of selectivity, which depended on the operational temperature of sensor, was observed. Here, the reported WO3/WO3–x-based sensing material opens an avenue for the design of sensors with temperature-dependent sensitivity, which can be applied in the design of new gas- and/or VOC-sensing systems that are dedicated for the determination of particular gas- and/or VOC-based analyte concentration in the mixture of different gases and/or VOCs, using multivariate analysis of variance (MANOVA). |
| Published |
Basel : MDPI AG |
| Type |
Journal article |
| Language |
English |
| Publication date |
2020 |
| CC license |
|
