作者：杨赛*，王嘉豪，窦晨，刘怡洋
单位：中机科（北京）车辆检测工程研究院有限公司，北京 102100
中图分类号：TP212       
文献标识码：A       
文章编号：1006-883X(2022)03-0001-05
收稿日期：2021-12-31

摘要：文章以钨酸钠和草酸为前驱体，采用水热法制备了新型花状WO3纳米材料，花状结构为纳米片组装而成。以此材料作为敏感材料，在平面式的传感元件中进行了气敏性能测试。结果表明：花状WO3对一氧化氮气体具有优异的气敏性能，检测极限达到10×10-6，在200 ℃的工作温度，100×10-6浓度下的最高灵敏度达到了37，重复测试灵敏度保持性优异。此方法制备工艺方便，性能优异，说明该传感材料有望用于汽车尾气排放的检测。
关键词：WO3；汽车尾气；灵敏度；检测

Research on Preparation of a New Tungsten Oxide Gas Sensing Material and Its Performance in the Detection of Nitric Oxide Gas
YANG Sai*, WANG Jiahao, DOU Chen, LIU Yiyang
(Vehicle Testing Engineering Research Institute of China, Beijing 102100, China)
Abstract: In the paper, flower like WO3 nano materials assembled from nano sheets were prepared by hydrothermal method using sodium tungstate and oxalic acid as precursors. Based on the material, a planar gas sensor was prepared, and its gas sensing performance was systematically tested. The results show that the flower like WO3 nanomaterials show excellent gas sensing performance towards NO, the detection limit reaches 10×10-6, the maximum sensitivity reaches 37 at the working temperature of 200 °C and the concentration of 100×10-6. Owing to excellent retention of repeated test sensitivity, indicating that the sensing material is expected to be used in the detection of automobile exhaust emission.
Key words: WO3; automobile exhaust emission; sensitivity; detection

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备注：2022年 第28卷 第03期