Chemical sensors based on nano-hexagonal tungsten oxide

Synthesis and characterization

C. Balázsi, István Endre Lukács, Katalin Balázsi

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

Tungsten oxide based materials have received a great attention in the fabrication of semiconducting oxide based gas sensor devices. In the present work the preparation of nanocrystalline hexagonal WO3 (hex-WO 3) from sodium tungstate solution by acidic precipitation as a nanocrystalline processing route is presented. Metal decorated carbon nanotubes (CNTs) were added to hex-WO3 nanopowder with the aim to further lower the operating temperature of sensors. Hex-WO3/Au-decorated MWCNTs composites were able to detect as low as 100 ppb of NO2, with no need to heat the sensors substrates during operation, which demonstrates the high potential of our new gas sensors. The developed porous tungsten oxide nanofibers might be find application on a special chip designed for gas sensorics.

Original languageEnglish
Title of host publicationNATO Science for Peace and Security Series B: Physics and Biophysics
Pages125-138
Number of pages14
DOIs
Publication statusPublished - 2013

Publication series

NameNATO Science for Peace and Security Series B: Physics and Biophysics
ISSN (Print)18746500

Fingerprint

tungsten oxides
Chemical sensors
Tungsten
Gases
Oxides
sensors
synthesis
Nanofibers
Carbon Nanotubes
Sensors
gases
tungstates
Carbon nanotubes
Hot Temperature
Metals
operating temperature
Sodium
Fabrication
Equipment and Supplies
Temperature

Keywords

  • Carbon nanotube
  • Gas sensor
  • Hexagonal tungsten oxide

ASJC Scopus subject areas

  • Biophysics
  • Biotechnology
  • Physics and Astronomy(all)
  • Electrical and Electronic Engineering

Cite this

Balázsi, C., Lukács, I. E., & Balázsi, K. (2013). Chemical sensors based on nano-hexagonal tungsten oxide: Synthesis and characterization. In NATO Science for Peace and Security Series B: Physics and Biophysics (pp. 125-138). (NATO Science for Peace and Security Series B: Physics and Biophysics). https://doi.org/10.1007/978-94-007-7003-4-10

Chemical sensors based on nano-hexagonal tungsten oxide : Synthesis and characterization. / Balázsi, C.; Lukács, István Endre; Balázsi, Katalin.

NATO Science for Peace and Security Series B: Physics and Biophysics. 2013. p. 125-138 (NATO Science for Peace and Security Series B: Physics and Biophysics).

Research output: Chapter in Book/Report/Conference proceedingChapter

Balázsi, C, Lukács, IE & Balázsi, K 2013, Chemical sensors based on nano-hexagonal tungsten oxide: Synthesis and characterization. in NATO Science for Peace and Security Series B: Physics and Biophysics. NATO Science for Peace and Security Series B: Physics and Biophysics, pp. 125-138. https://doi.org/10.1007/978-94-007-7003-4-10
Balázsi C, Lukács IE, Balázsi K. Chemical sensors based on nano-hexagonal tungsten oxide: Synthesis and characterization. In NATO Science for Peace and Security Series B: Physics and Biophysics. 2013. p. 125-138. (NATO Science for Peace and Security Series B: Physics and Biophysics). https://doi.org/10.1007/978-94-007-7003-4-10
Balázsi, C. ; Lukács, István Endre ; Balázsi, Katalin. / Chemical sensors based on nano-hexagonal tungsten oxide : Synthesis and characterization. NATO Science for Peace and Security Series B: Physics and Biophysics. 2013. pp. 125-138 (NATO Science for Peace and Security Series B: Physics and Biophysics).
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