P2EC.6 - High performance mixed potential type acetone sensor based on CeO2 and Sr2FeMoO6 sensing electrode
- 17th International Meeting on Chemical Sensors - IMCS 2018
2018-07-15 - 2018-07-19
- P-2 - Electrochemical Sensors
- T. Liu, X. Liang, F. Liu, G. Lu - State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun (China)
- 713 - 714
In order to obtain high performance CeO2-based mixed potential type acetone sensors, three series of sensing electrode materials include MMnO3 (M: Sr, Ca, La and Sm), MFeO3 (M: Bi, La and Sm) and Sr2MMoO6 (M: Mg, Fe and Ni) were prepared by sol-gel method. Results showed that the sensor attached with Sr2FeMoO6 sensing electrode presented the best sensing characteristic to acetone, which showed the maximum response value of -147mV to 100ppm acetone among all the other sensors in this study and the response time was about 13s. Moreover, the response value (ΔV) of the sensor changed proportionally with the logarithm of acetone concentration at the ranges of 0.5-5ppm and 5-200ppm, and the slopes of which were -10.8 and -100mV/decade, respectively. The device also exhibited excellent repeatability, relatively good selectivity, humidity stability and good long-term stability during 25days. Based on the above sensing performance, Sr2FeMoO6 could be used as a potential sensing electrode material to the rapid detection of acetone in atmosphere, microenvironment and diabetes.