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. 2019 Feb 5;9(1):21. doi: 10.3390/bios9010021

Table 4.

Comparison of NO2-resistive gas sensors based in nanostructured MOX.

Sensitive Layer Concentration (ppm) T (°C) Response (RNO2/Rair) Ref.
In2O3 (nanorod clusters) 0.5 150 41 [34]
ZnO (nanowires) 0.5 225 18 [35]
SnO2 (nanowires) 0.5 200 17 [36]
SnO2 (hierarchical leaf-like) 0.5 65 7 [37]
SnO2 (nanofibrefibres) 0.1/0.5 25 1.16/1.93 This work