期刊
CERAMICS INTERNATIONAL
卷 48, 期 22, 页码 32986-32993出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2022.07.230
关键词
n-butylamine; Gas sensor; Co-dopedMoO3; Operating temperature
资金
- National Natural Science Foundation of China
- Fundamental Research Funds for the Central Universities of China
- [51974072]
- [N2125028]
Zinc and cobalt co-doped molybdenum trioxide nanosheets were successfully prepared and showed high response to n-butylamine gas at low temperature. The doping of Zn and Co decreased the optimum operating temperature and improved the selectivity of the sensor. Multi-doping system has great potential for sensor development and application, providing a feasible method for reducing the operating temperature of the sensor.
High operating temperature of metal oxide sensor devices hinders their practical applications. In order to reduce operating temperature, molybdenum trioxide (MoO3) nanosheets co-doped with zinc (Zn) and cobalt (Co) were successfully prepared by simple one-step hydrothermal method and characterized by X-ray diffraction, scanning electron microscopy, and X-ray photoelectron spectroscopy, and by using WS-30A gas sensor measurement system. The sensor exhibited high response to n-butylamine gas at low temperature. In particular, the response of Zn and Co co-doped MoO3 sensor was higher than that of pure MoO3 and retained excellent selectivity of MoO3 to n-butylamine. Optimum operating temperature gradually decreased with increasing Co and Zn doping amount. Multi-doping system shows great potential for the development and application of sensors,and provides feasible method for reducing their operating temperature of the sensor.
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