NiO-Based Gas Sensors for Ethanol Detection: Recent Progress

Figure 11

(a) SEM of NiO/ZnSnO₃. (b) Gas response of NiO/ZnSnO₃, NiO, and ZnSnO₃ under different temperatures at 20 ppm ethanol. (c) Gas response of NiO/ZnSnO₃ and ZnSnO₃ under 20 ppm different gases. (d) Gas response of NiO/ZnSnO₃, NiO, and ZnSnO₃ to different ethanol concentrations at 160°C (reprinted/adapted by [139]).

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