Gas sensors based on Quartz Crystal Resonator device coated with TiO₂/Graphene-Oxide (GO) films were fabricated to sense ethanol, ammonia, and nitrogen at room temperature. TiO₂ nanostructures, as gas sensing film, were fabricated by drop casting TiCl₄ aqueous solution with different concentrations, and analyzed by SEM, TEM, XRD and profilometer. Exposed to the above mentioned gases, the responses of the sensors, $\Delta f$, were measured. Sensor with 55 nm TiO₂ film shows higher response to N₂ and 100 ppm concentration of ethanol and NH₃ than the others, due to larger surface area of the film, which are 635, 334, and 528 Hz, respectively. To improve the response further, TiO₂/GO film is prepared, the response of which for N₂ and 100 ppm concentration of ethanol and NH₃ increased significantly to 848, -360 and 740 Hz, respectively. Sensing mechanisms are based on changing in mass and elasticity properties of the device. High response, simple and low cost preparation and room temperature operation are the main advantages of these sensors making them attractive for future applications.

基于涂有TiO ₂ /氧化石墨烯（GO）薄膜的石英晶体谐振器装置的气体传感器被制造为在室温下感测乙醇、氨和氮气。通过滴铸不同浓度的TiCl ₄水溶液制备TiO ₂纳米结构作为气敏薄膜，并通过SEM、TEM、XRD和轮廓仪进行分析。暴露于上述气体，传感器的响应，$\Delta F$，进行了测量。由于薄膜的表面积较大，分别为 635、334 和 528 Hz，因此具有 55 nm TiO ₂薄膜的传感器对 N ₂和 100 ppm 浓度的乙醇和 NH _{3 的}响应比其他传感器更高。为了进一步提高响应，制备了TiO ₂ /GO 薄膜，其对 N ₂和 100 ppm 乙醇和 NH ₃浓度的响应分别显着增加到 848、-360 和 740 Hz。传感机制基于设备的质量和弹性特性的变化。高响应、简单且低成本的制备和室温操作是这些传感器的主要优点，使其对未来的应用具有吸引力。