[15p-P15-1~8] 6.5 Surface Physics, Vacuum

▲ [15p-P15-6] Quartz Crystal Microbalance Gas Sensor Utilizing Graphene Oxide / TiO₂ Composite

〇(M1)Pramudi Savidya Jayawardena¹, Hirulak Dilshan Siriwardena², Atsushi Kubono^1,2, Masaru Shimomura^1,2 (1.GSIST, Shizuoka Univ, 2.GSST, Shizuoka Univ)

Keywords:Gas Sensing, Graphene Oxide / TiO2, QCM

Graphene oxide (GO) contain a range of reactive oxygen functional groups on the sheet surface, which provide a good candidate for supporting metal oxide particles and also may become an ideal sensing platform because of potential hydrogen bonding and π-π stacking interactions. Titania (TiO₂) has been explored for advanced chemical gas sensors based upon different parameters to detect different gas species. Our research deals with, studies concerning the construction of sensors based on a quartz crystal microbalance (QCM) containing a graphene oxide/ TiO₂ composite sensor layers. The sensing performance of functionalized QCM resonators were examined by changing EtOH concentration and all responses obtained were similar in shape, and the response of QCM resonator decreased proportionally to the EtOH concentrations.