Graphene based sensor for environmental monitoring of NO2

Tutkimustuotos: Lehtiartikkelivertaisarvioitu

Tutkijat

  • S. Novikov
  • N. Lebedeva
  • A. Satrapinski
  • J. Walden
  • V. Davydov
  • A. Lebedev

Organisaatiot

  • Finnish Meteorological Institute
  • Ioffe Institute
  • VTT Technical Research Centre of Finland
  • St. Petersburg National Research University of Information Technologies, Mechanics and Optics (ITMO)

Kuvaus

Gas sensor operating in part-per billion (ppb) range is required for environmental monitoring of nitrogen dioxide. Currently there is a lack of cheap sensors, which can operate in this concentration range. In this work, an ultrasensitive gas sensor based on epitaxial graphene on SiC has been proposed. The sensor exhibits a strong and reproducible response to nitrogen dioxide (NO2) for concentrations in air down to 1 ppb. A prototype of a portable device for environmental monitoring which utilizes a combination of sample gas exposure at room temperature and sensor's recovery at elevated temperature has been made. Prototype allows fast and reproducible measurements of NO2 concentration in the typical range for environmental pollution (5 ppb–50 ppb).

Yksityiskohdat

AlkuperäiskieliEnglanti
Sivut1054-1060
Sivumäärä7
JulkaisuSensors and Actuators B: Chemical
Vuosikerta236
TilaJulkaistu - 29 marraskuuta 2016
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

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