Tuned sensing properties of metal-modified carbon-based nanostructures layers for gas microsensors

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

Research output: Contribution to conferencePaper

3 Citations (Scopus)

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 (NO 2, NH 3, CO, CH 4, CO 2). 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 NO 2 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. © 2012 Springer Science+Business Media, LLC.
Original languageEnglish
DOIs
Publication statusPublished - 2012
Externally publishedYes
Event16th Conference on Italian Association of Sensors and Microsystems, AISEM 2011 - , Italy
Duration: 1 Jan 2012 → …

Conference

Conference16th Conference on Italian Association of Sensors and Microsystems, AISEM 2011
CountryItaly
Period1/1/12 → …

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All Science Journal Classification (ASJC) codes

  • Industrial and Manufacturing Engineering

Cite this

Rossi, R., Alvisi, M., Cassano, G., Pentassuglia, R., Dimaio, D., Suriano, D., ... Penza, M. (2012). Tuned sensing properties of metal-modified carbon-based nanostructures layers for gas microsensors. Paper presented at 16th Conference on Italian Association of Sensors and Microsystems, AISEM 2011, Italy. https://doi.org/10.1007/978-1-4614-0935-9_20