【作者】：Wang, Zhenyu; Sun, Peng; Yang, Tianlin; Li, Xiaowei; Du, Yu; Liang, Xishuang; Zhao, Jing; Liu, Yinping; Lu, Geyu
【题目】：Gas Sensing Properties of Nano-Tungsten Oxide (WO3) Prepared by a Microwave-Assisted Decomposition
【关键词】：NO2 Sensor,WO3 Nanoparticles, Microwave-Assisted Decomposition
【版面信息】：Sensor Letters 2013 11( 2 ) : 423-427
摘要:
WO3nanoparticles were synthesized by calcinating the precursor, which was obtained via a microwave-assisted decomposition method. The as-prepared WO3nanoparticles were characterized with field emission scanning electron microscopy (SEM) and X-ray powder diffraction (XRD). The result revealed that the particle sizes were about 100 nm. Gas sensors based on as-prepared WO3nanoparticles were fabricated, and their sensing performance were tested for response to ethanol, acetone, NO2, H2S, SO2, and NH3gases. The gas-sensing mechanism was also briefly introduced. The sensor showed excellent selectivity and high sensitivity toward NO2at relatively low operating temperature (70℃). These results may provide a possible way for low concentration NO2detection.
