Highly selective gas sensor arrays based on thermally reduced graphene oxide

Alexey Lipatov, Alexey Varezhnikov, Peter Wilson, Victor Sysoev, Andrei Kolmakov, Alexander Sinitskii

Research output: Contribution to journalArticle

141 Citations (Scopus)

Abstract

The electrical properties of reduced graphene oxide (rGO) have been previously shown to be very sensitive to surface adsorbates, thus making rGO a very promising platform for highly sensitive gas sensors. However, poor selectivity of rGO-based gas sensors remains a major problem for their practical use. In this paper, we address the selectivity problem by employing an array of rGO-based integrated sensors instead of focusing on the performance of a single sensing element. Each rGO-based device in such an array has a unique sensor response due to the irregular structure of rGO films at different levels of organization, ranging from nanoscale to macroscale. The resulting rGO-based gas sensing system could reliably recognize analytes of nearly the same chemical nature. In our experiments rGO-based sensor arrays demonstrated a high selectivity that was sufficient to discriminate between different alcohols, such as methanol, ethanol and isopropanol, at a 100% success rate. We also discuss a possible sensing mechanism that provides the basis for analyte differentiation.

Original languageEnglish (US)
Pages (from-to)5426-5434
Number of pages9
JournalNanoscale
Volume5
Issue number12
DOIs
StatePublished - Jun 21 2013

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Graphite
Sensor arrays
Chemical sensors
Oxides
Graphene
Gases
2-Propanol
Sensors
Adsorbates
Oxide films
Methanol
Electric properties
Alcohols
Ethanol
Equipment and Supplies

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Lipatov, A., Varezhnikov, A., Wilson, P., Sysoev, V., Kolmakov, A., & Sinitskii, A. (2013). Highly selective gas sensor arrays based on thermally reduced graphene oxide. Nanoscale, 5(12), 5426-5434. https://doi.org/10.1039/c3nr00747b

Highly selective gas sensor arrays based on thermally reduced graphene oxide. / Lipatov, Alexey; Varezhnikov, Alexey; Wilson, Peter; Sysoev, Victor; Kolmakov, Andrei; Sinitskii, Alexander.

In: Nanoscale, Vol. 5, No. 12, 21.06.2013, p. 5426-5434.

Research output: Contribution to journalArticle

Lipatov, A, Varezhnikov, A, Wilson, P, Sysoev, V, Kolmakov, A & Sinitskii, A 2013, 'Highly selective gas sensor arrays based on thermally reduced graphene oxide', Nanoscale, vol. 5, no. 12, pp. 5426-5434. https://doi.org/10.1039/c3nr00747b
Lipatov A, Varezhnikov A, Wilson P, Sysoev V, Kolmakov A, Sinitskii A. Highly selective gas sensor arrays based on thermally reduced graphene oxide. Nanoscale. 2013 Jun 21;5(12):5426-5434. https://doi.org/10.1039/c3nr00747b
Lipatov, Alexey ; Varezhnikov, Alexey ; Wilson, Peter ; Sysoev, Victor ; Kolmakov, Andrei ; Sinitskii, Alexander. / Highly selective gas sensor arrays based on thermally reduced graphene oxide. In: Nanoscale. 2013 ; Vol. 5, No. 12. pp. 5426-5434.
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