Chemical Research in Chinese Universities ›› 2016, Vol. 32 ›› Issue (6): 924-928.doi: 10.1007/s40242-016-6129-z

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Studies on QCM-type NO2 Gas Sensor Based on Graphene Composites at Room Temperature

QI Pengjia1,2, WANG Ziying2, WANG Rui2, XU Yinan1, ZHANG Tong2   

  1. 1. College of Engineering, Yanbian University, Yanji 133002, P. R. China;
    2. College of Electronic Science and Engineering, Jilin University, Changchun 130012, P. R. China
  • Received:2016-04-05 Revised:2016-06-28 Online:2016-12-01 Published:2016-08-29
  • Contact: XU Yinan, E-mail:ynxu@ybu.edu.cn; ZHANG Tong, E-mail:zhangtong@jlu.edu.cn E-mail:ynxu@ybu.edu.cn;zhangtong@jlu.edu.cn
  • Supported by:

    Supported by the National Natural Science Foundation of China(Nos.61673191, 61671218, 61674066), the Project for Changjiang Scholars Innovation Team in the Ministry of Education of China(No.IRT3018), the Open Project from the State Key Laboratory of Transducer Technology, China(No.SKT1402) and the High Tech Project of Jilin Province, China (No.20150204029GX).

Abstract:

Synthetic graphene composite was modified on a transducer of quartz crystal microbalance(QCM) to fabricate a gas sensor for low concentration nitrogen dioxide(NO2) detection. The gas sensing properties of the QCM coated with SnO2-rGO and AgNPs-SnO2-rGO composites were investigated when exposing QCM to low NO2 con-centration(2.05-20.5 mg/m3) atmosphere at room temperature. The sensing performances of the QCM with AgNPs-SnO2-rGO composites were enhanced by the introduction of Ag nanoparticles, and the QCM modified with AgNPs-SnO2-rGO composites could detect NO2 at room temperature.

Key words: Quartz crystal microbalance, Nitrogen dioxide, Low concentration, Qraphene, Room temperature