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Tuned Sensing Properties of Metal-Modified Carbon-Based Nanostructures Layers for Gas Microsensors

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Sensors and Microsystems

Part of the book series: Lecture Notes in Electrical Engineering ((LNEE,volume 109))

Abstract

In this work, carbon nanomaterials have been prepared by CVD technology onto alumina substrates, coated by nanosized Co-catalyst at different thickness (2.5 nm and 7.5 nm) and used for a simple gas sensor device. The surface has been functionalized with sputtered Pt-nanocluster at a tuned loading of 8, 15 and 30 nm. The response of the chemiresistors in terms of p-type electrical conductance has been investigated as a function of the thickness of the Pt-nanoclusters towards different gases (NO2, NH3, CO, CH4, CO2). Furthermore, the effect of the temperature ranging from 20°C to 250°C on the sensor response has been addressed as well. Additionally, a short-term stability of the carbon nanomaterials based sensor towards NO2 gas detection has been investigated for a 2-month period. The gas sensors based on Pt-modified carbon nanomaterials exhibit higher sensitivity compared to unmodified material, fast response, reversibility, repeatability, moderate drift of the baseline signal, sub-ppm range detection limit.

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Authors and Affiliations

  1. ENEA, Brindisi Technical Unit for Technologies of Materials, Brindisi, Italy

    R. Rossi, M. Alvisi, G. Cassano, R. Pentassuglia, D. Dimaio, D. Suriano, E. Serra, E. Piscopiello, V. Pfister & M. Penza

Authors
  1. R. Rossi
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  2. M. Alvisi
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  3. G. Cassano
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  4. R. Pentassuglia
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  5. D. Dimaio
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  6. D. Suriano
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  7. E. Serra
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  8. E. Piscopiello
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  9. V. Pfister
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  10. M. Penza
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Corresponding author

Correspondence to M. Penza .

Editor information

Editors and Affiliations

  1. University of Rome Tor Vergata, Rome, Italy

    Arnaldo D’Amico

  2. University of Rome Tor Vergata, Rome, Italy

    Corrado Di Natale

  3. Technologies, Energy and the Environment, ENEA, Italian National Agency for New, Rome, Italy

    Lucia Mosiello

  4. Technologies, Energy and the Environment, ENEA, Italian National Agency for New, Rome, Italy

    Giovanna Zappa

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© 2012 Springer Science+Business Media, LLC

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Rossi, R. et al. (2012). Tuned Sensing Properties of Metal-Modified Carbon-Based Nanostructures Layers for Gas Microsensors. In: D’Amico, A., Di Natale, C., Mosiello, L., Zappa, G. (eds) Sensors and Microsystems. Lecture Notes in Electrical Engineering, vol 109. Springer, Boston, MA. https://doi.org/10.1007/978-1-4614-0935-9_20

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  • DOI: https://doi.org/10.1007/978-1-4614-0935-9_20

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  • Publisher Name: Springer, Boston, MA

  • Print ISBN: 978-1-4614-0934-2

  • Online ISBN: 978-1-4614-0935-9

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