期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 226, 期 -, 页码 478-485出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2015.12.005
关键词
Ultralong MoO3 nanobelts; Gas sensor; Trimethylamine; Sensitivity; Selectivity
资金
- International Science & Technology Cooperation Program of China [2013DFR50710]
- Equipment pre-research project [625010402]
- Science and Technology Support Program of Hubei Province [2014BAA096]
- National Nature Science Foundation of Hubei Province [2014CFB165]
- Ministry of Education and Science of Russia [14.613.21.0002]
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province [GD201402]
In the present work, ultralong MoO3 nanobelts are prepared by a facile hydrothermal method, which are flexible with an average length of 200 tim and width of 200-400 nm. Gas sensor based on ultralong MoO3 nanobelts shows a remarkable gas sensing properties towards trimethylamine (TMA) from 100 degrees C to 380 degrees C with a humidity level of about 55%. The optimum operating temperature is 240 degrees C with a response of 582 to 50 ppm TMA in static mode. The selectivity test among various reducing gases shows that the sensor has a quite good response towards TMA if compared with others gases, such as ethanol, ammonia, toluene, methanol and acetone. The probable gas sensing mechanism of the prepared MoO3 nanobelts is discussed as well. The results indicate that this kind of sensor has a promising application in TMA detection. (C) 2015 Elsevier B.V. All rights reserved.
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