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. 2007 Sep 7;7(9):1871–1886. doi: 10.3390/s7091871

Table 1.

Comparison of SrTi0.8Fe0.2O3-δ samples prepared by conventional means and by nanotechnology. R/R0 values towards different analyte gases (concentration as indicated) obtained at 400 °C in dry air.

microscaled thick film electrosprayed film electrospun film nanoscaled thick film
R0 / kΩ2 1.7 16 1690 620
R/R0
Propane (500 ppm) 1.4 1.6 1.9 4.5
Propene (500 ppm) 1.7 2.2 5.1 12.0
Ammonia (500 ppm) 1.8 3.7 4.0 4.2
NO (500 ppm) 1.5 2.4 1.9 2.4
CO (500 ppm) ≈ 1 1.2 1.4 2.4
H2 (1000 ppm) ≈ 1 1.05 1.05 1.6