Thick film titania sensors for detecting traces of oxygen
2007
Abstract The development of pure titania and Nb-doped titania based sensors is reported. Active materials were synthesized via sol–gel and calcined at temperatures between 600 °C and 900 °C. The different materials were characterized by XRD, Raman, SEM and Area BET. The samples were then deposited on alumina substrates through a thick-film technique. A comparison of the response to traces of O 2 in N 2 balance of the different samples was carried out at working temperatures between 300 °C and 600 °C. The detection of oxygen traces (10 ppm) at a relatively low operating temperature (500 °C) is demonstrated.
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