Effect of hexagonal WO3 morphology on NH3 sensing

M. Takács, C. Dücső, Z. Lábadi, A. Pap

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)

Abstract

Tungsten oxide nano-powders were prepared by acidic precipitation from sodium tungstate solution. The alternative processes of the applied hydrothermal method resulted in different structure and morphology of hexagonal WO3nano-crystals. Micro-hotplates with gold electrodes on top to measure sensing layer conductivity were fabricated. WO3 layers of the two morphologies were deposited using capillary dropping technique. Sensor responses were measured up to 220 °C operation temperature for NH3 diluted in synthetic air in the 10-100 ppm range. Test results are compared in terms of conductivity, sensitivity and response time.

Original languageEnglish
Title of host publicationEUROSENSORS 2014, the 28th European Conference on Solid-State Transducers
PublisherElsevier Ltd
Pages1011-1014
Number of pages4
Volume87
DOIs
Publication statusPublished - 2014
Event28th European Conference on Solid-State Transducers, EUROSENSORS 2014 - Brescia, Italy
Duration: Sep 7 2014Sep 10 2014

Other

Other28th European Conference on Solid-State Transducers, EUROSENSORS 2014
CountryItaly
CityBrescia
Period9/7/149/10/14

Fingerprint

Tungsten
Gold
Sodium
Powders
Crystals
Electrodes
Oxides
Sensors
Air
Temperature

Keywords

  • Gas sensor
  • Hexagonal WO<inf>3</inf>
  • Micro-hotplate

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Takács, M., Dücső, C., Lábadi, Z., & Pap, A. (2014). Effect of hexagonal WO3 morphology on NH3 sensing. In EUROSENSORS 2014, the 28th European Conference on Solid-State Transducers (Vol. 87, pp. 1011-1014). Elsevier Ltd. https://doi.org/10.1016/j.proeng.2014.11.331

Effect of hexagonal WO3 morphology on NH3 sensing. / Takács, M.; Dücső, C.; Lábadi, Z.; Pap, A.

EUROSENSORS 2014, the 28th European Conference on Solid-State Transducers. Vol. 87 Elsevier Ltd, 2014. p. 1011-1014.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Takács, M, Dücső, C, Lábadi, Z & Pap, A 2014, Effect of hexagonal WO3 morphology on NH3 sensing. in EUROSENSORS 2014, the 28th European Conference on Solid-State Transducers. vol. 87, Elsevier Ltd, pp. 1011-1014, 28th European Conference on Solid-State Transducers, EUROSENSORS 2014, Brescia, Italy, 9/7/14. https://doi.org/10.1016/j.proeng.2014.11.331
Takács M, Dücső C, Lábadi Z, Pap A. Effect of hexagonal WO3 morphology on NH3 sensing. In EUROSENSORS 2014, the 28th European Conference on Solid-State Transducers. Vol. 87. Elsevier Ltd. 2014. p. 1011-1014 https://doi.org/10.1016/j.proeng.2014.11.331
Takács, M. ; Dücső, C. ; Lábadi, Z. ; Pap, A. / Effect of hexagonal WO3 morphology on NH3 sensing. EUROSENSORS 2014, the 28th European Conference on Solid-State Transducers. Vol. 87 Elsevier Ltd, 2014. pp. 1011-1014
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