Presentation Information
[16p-PB1-4]Effects of Humidity on Graphitic Carbon Nitride coated QCM type Gas Sensors
〇(M2)Osuke Uemura1, Yuto Komiya1, Yasushi Ishiguro2, Kazuya Kanasugi1, Takashi Tachiki2, Kenji Hirakuri1 (1.Tokyo Denki Univ., 2.National Defense Acad.)
Keywords:
graphitic carbon nitride,hydrogen gas sensor,quartz crystal microbalance
We evaluated the humidity dependence of a graphitic carbon nitride (g-C3N4) coated QCM gas sensor. The g-C3N4 film was prepared by thermal polymerization of melamine and deposited on a QCM substrate. We measured the resonance frequency response under relative humidity ranging from 20% to 80% RH. The frequency decreased with increasing humidity, showing a significantly larger shift compared to an uncoated QCM. Temperature monitoring confirmed that the response was attributed to humidity. The sensing mechanism will be discussed based on structural analysis.