7.2.1 Influence of Sintering Temperatures on the Performance of ZnO-doped RuO2 Sensing Electrode of Electrochemical DO Sensor
- 14th International Meeting on Chemical Sensors - IMCS 2012
2012-05-20 - 2012-05-23
- 7.2 Electrochemical Sensors I
- S. Zhuiykov, E. Kats - CSIRO, Materials Science and Engineering Division (Australia)
- 592 - 595
In this research planar dissolved oxygen (DO) sensors based on 20 mol % ZnO-doped RuO2 thickfilms were fabricated on alumina substrates over a range of sintering temperatures (STs) during the preparation. The STs were 750, 800, 850, and 900°C. Subsequent scanning electron microscope (SEM) images showed that different surface morphologies were achieved for the different STs. The relationship between DO and the sensor’s response at STs of 800 and 850°C was found to be relatively linear for all four STs. It has been experimentally established that optimum results were obtained when the sensing (SE) was sintered at 800°C. The correlation between pH and SE response was found to be linear and showed there was minimal impact of the ST on the SEs.