Figure 3.
Gas‐sensing characteristics of a) pure SnO2, b) 0.5Rh‐TiO2/SnO2, c) 1Rh‐TiO2/SnO2, and d) 2Rh‐TiO2/SnO2 sensors to 5 ppm of various gases (benzene, toluene, p‐xylene, ethanol, HCHO, and CO) in the range 325–425 °C.
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