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. 2019 Feb 21;4(2):3812–3819. doi: 10.1021/acsomega.8b03540

Figure 3.

Figure 3

Graphene NO2 sensing enhanced by PS decoration. (a) Gas-sensing dynamics of graphene-based gas sensor before and (b) after drop coating with PS beads. (c) Sensing responses of the graphene sensor for 45 ppb NO2 for illumination and decoration conditions. (d) Dynamic-sensing responses of the same sensor measured as fabricated and measured after 4 month air exposure under 1064 nm laser illumination. (e) Dynamic-sensing responses of a sensor for 4400 ppb NO2 at different humidities. (f) Dynamic-sensing responses of a PS/graphene sensor for a variety of gasses at 1 ppm.