A quartz crystal microbalance (QCM) electrode coated with high surface area mesoporous silica KIT-6 films was designed as a sensor for the detection of a wide range of volatile organic compounds (VOCs) such as aliphatic alcohols, aliphatic amines, benzene and toluene at room temperature. A thin film of KIT-6 coating on Au-electrode of QCM was prepared by a simple drop-coating approach. The mesoporous silica KIT-6 was characterized with transmission electron microscope (TEM), low-angle X-ray difraction (XRD), Fourier transform infrared spectrocsopy (FT-IR) and N₂ sorption isotherm. The frequency shifts (Δf) of the QCM coated with mesoporous silica KIT-6 films were measured as a function of time after injection of different VOCs vapors. Δfs were found to be increased linearly with the injected chemical vapor concentration. The results definitely showed an enhanced detection sensitivity and a fast response of the QCM sensor. The sensor showed an unusual high sensitivity and selectivity for amine compounds and the equilibrium was achieved within few seconds. The adsorption kinetics and relaxation time of methanol and ethanol vapors were carefully studied.

设计了一种涂有高表面积介孔二氧化硅KIT-6膜的石英微天平（QCM）电极，作为一种传感器，可以检测多种挥发性有机化合物（VOC），例如脂肪醇，脂肪胺，苯和甲苯。室内温度。通过简单的滴涂方法在QCM的Au电极上制备了KIT-6涂层的薄膜。用透射电子显微镜（TEM），低角度X射线衍射（XRD），傅立叶变换红外光谱（FT-IR）和N ₂吸附等温线对介孔二氧化硅KIT-6进行了表征。在注入不同的VOC蒸气后，测量了涂覆有中孔二氧化硅KIT-6薄膜的QCM的频移（Δf）与时间的关系。Δ ˚F发现s随着注入的化学蒸气浓度线性增加。结果肯定显示出增强的检测灵敏度和QCM传感器的快速响应。该传感器对胺化合物表现出不同寻常的高灵敏度和选择性，并且在几秒钟内就达到了平衡。仔细研究了甲醇和乙醇蒸气的吸附动力学和弛豫时间。