Original Paper

Copper oxide nanofibres for detection of hydrogen peroxide vapour at high concentrations

  1. Jörg Hennemann1,*,
  2. Claus-Dieter Kohl1,
  3. Steffen Reisert2,
  4. Patrick Kirchner2,
  5. Michael J. Schöning2

Article first published online: 27 FEB 2013

DOI: 10.1002/pssa.201200775

Issue

physica status solidi (a)

physica status solidi (a)

Volume 210, Issue 5, pages 859–863, May 2013

Additional Information

How to Cite

Hennemann, J., Kohl, C.-D., Reisert, S., Kirchner, P. and Schöning, M. J. (2013), Copper oxide nanofibres for detection of hydrogen peroxide vapour at high concentrations. Phys. Status Solidi A, 210: 859–863. doi: 10.1002/pssa.201200775

Author Information

  1. 1

    Institute of Applied Physics, Justus Liebig University Giessen, Heinrich-Buff-Ring 16, 35392 Giessen, Germany

  2. 2

    Institute of Nano- and Biotechnologies, FH Aachen, Heinrich-Mußmann-Straße 1, 52428 Jülich, Germany

*Phone: +49 0641 99 33411, Fax: +49 0641 99 33419

Publication History

  1. Issue published online: 17 MAY 2013
  2. Article first published online: 27 FEB 2013
  3. Manuscript Accepted: 7 JAN 2013
  4. Manuscript Revised: 19 NOV 2012
  5. Manuscript Received: 29 SEP 2012

Funded by

  • DFG

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Keywords:

  • copper oxide;
  • gas sensor;
  • hydrogen peroxide;
  • vapour

Abstract

We present a sensor concept based on copper(II)oxide (CuO) nanofibres for the detection of hydrogen peroxide (H2O2) vapour in the percent per volume (% v/v) range. The fibres were produced by using the electrospinning technique. To avoid water condensation in the pores, the fibres were initially modified by an exposure to H2S to get an enclosed surface. By a thermal treatment at 350 °C the fibres were oxidised back to CuO. Thereby, the visible pores disappear which was verified by SEM analysis. The fibres show a decrease of resistance with increasing H2O2 concentration which is due to the fact that hydrogen peroxide is an oxidising gas and CuO a p-type semiconductor. The sensor shows a change of resistance within the minute range to the exposure until the maximum concentration of 6.9% v/v H2O2. At operating temperatures below 450 °C the corresponding sensor response to a concentration of 4.1% v/v increases. The sensor shows a good reproducibility of the signal at different measurements. CuO seems to be a suitable candidate for the detection of H2O2 vapour at high concentrations. pssa201200775-gra-0001

Resistance behaviour of the sensor under exposure to H2O2 vapours between 2.3 and 6.9% v/v at an operating temperature of 450 °C.

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