ZHANG Jia-qi, HU Xin-sheng, HU Fa-zhi, et al. Research on QCM gas sensor modified by ZnO nanorods for NH3 detection[J]. 2014, 33(4): 14-16+20. DOI: 10.13873/j.1000-97872014.04.035.
Preparation and test of quartz crystal microbalance( QCM) gas sensor modified by ZnO nanorods is mainly introduced. ZnO nanorods sensitive film with 100 nm diameter which is fabricated by two-step method on surface of quartz crystal
constitutes QCM NH3gas sensor. Detection system is self-developed frequency testing software of QCM gas sensor based on LabVIEW platform. Volume fraction of the detected NH3gas is 5 × 10- 6
50 × 10- 6
response time is within 10 s
the maximum frequency difference value is 10. 9 Hz
and the maximum frequency difference value of response exhibites a good linear relationship with NH3gas. Under the condition of room temperature
ZnO nanorods sensitive film has reversibility which can fully achi
eve the adsorption and desorption process. The sensor has stable property