【作者】：Wang Yinglin, Zhang Bo, Liu Jie, Yang Qiuyue, Cui Xiaobiao, Gao Yuan*, Chuai Xiaohong, Liu Fengmin, Sun Peng, Liang Xishuang, Sun Yanfeng, Lu Geyu*
【题目】：Au-loaded mesoporous WO3: Preparation and n-butanol sensing performances
【关键词】：WO3,KIT-6,Au,Mesoporous,n-Butanol,TUNGSTEN-OXIDE, GAS SENSORS, LOW-TEMPERATURE, NANOSTRUCTURES, ALPHA-FE2O3, NANOPARTICLES, SENSITIVITY, PROPERTY, ACETONE, ROUTE
【版面信息】：Sensors and Actuators B: Chemical 236 (2016) 67-76
摘要:
An loaded mesoporous WO3was synthesized by nanocasting method. Mesoporous structure provided a large specific surface area, and the noble metal (Au) improved the catalytic efficiency. The above two characteristics played crucial roles in enhancing the performance of the gas sensors. The as-synthesizedmaterials were deduced by X-ray diffraction (XRD), Brunauer-Emmet-Teller (BET), Transmission electronmicroscopy (TEM) and X-ray photoelectron spectroscopy (XPS). The obtained materials showed ordered mesoporous structure with excellent crystallinity and the pore size was about 10.8 nm which matched with Barrett-Joyner-Halenda analysis. Static test system was employed to measure volatile organic compounds (VOCs) (such as methanol, ethanol, isopropanol and n-butanol) sensing properties for the sensors using mesoporous WO3and different weight ratios of Au-loaded (0.2%, 0.5% and 1.0%) mesoporous WO3. The sensors loaded with Au exhibited much higher sensitivity and selectivity to n-butanol in this work. Furthermore, Au-loaded materials showed lower operating temperature.
