Graphene oxide, reduced graphene oxide and composite thin films NO2 sensing properties

Katarzyna J. Dunst; Piotr Jasiński

doi:10.1117/12.2246761

10 November 2016 Graphene oxide, reduced graphene oxide and composite thin films NO₂ sensing properties

Katarzyna J. Dunst, Piotr Jasiński

Proceedings Volume 10161, 14th International Conference on Optical and Electronic Sensors; 101610S (2016) https://doi.org/10.1117/12.2246761
Event: 14th International Conference on Optical and Electronic Sensors, 2016, Gdansk, Poland

Abstract

A graphene oxide (GO), reduced graphene oxide (RGO) and poly(3,4-ethylenedioxytiophene)-reduced graphene oxide (PEDOT-RGO composite) gas sensors were successfully fabricated using an electro-deposition method. The electro-deposition was carried out in aqueous GO dispersions. To obtain RGO and PEDOT-RGO, the electrochemical reduction of GO and PEDOT-GO was carried out in 0.1 M KCl at a constant potential of −0.85 V. The GO, RGO and PEDOT-RGO composite were characterized by scanning electron microscopy (SEM). The fabricated sensors showed sensitivity to NO₂ gas. In this work the sensing response of GO, RGO and PEDOT-RGO in NO₂ at elevated temperatures were investigated. The influence of the operating temperature on the gas sensing response were compared. The role of the polymer and RGO in PEDOT-RGO composite was discussed. The results are discussed in light of recent literature on graphene sensors.

Citation Download Citation

Katarzyna J. Dunst and Piotr Jasiński "Graphene oxide, reduced graphene oxide and composite thin films NO₂ sensing properties", Proc. SPIE 10161, 14th International Conference on Optical and Electronic Sensors, 101610S (10 November 2016); https://doi.org/10.1117/12.2246761

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