摘要
采用水热合成法制备了花状CuO材料。为了改善CuO气体传感器性能,分别将ZSM-5型、HY型以及NaA型沸石与p型半导体CuO材料以涂覆法和直接混合法复合制成气敏元件。用X-射线衍射(XRD)、电子扫描显微镜(SEM)分别对制备的CuO材料以及3种沸石与CuO复合材料的形貌及其微观结构进行了表征与分析。将制备的几类敏感元件对多种VOC气体进行气敏测试。结果表明,与纯CuO相比,ZSM-5沸石/CuO复合材料均显著提高了对甲苯的响应值;HY沸石/CuO复合材料提高了对丙酮、乙醇、甲苯的响应值;NaA沸石/CuO复合材料改善了对乙醇和甲醛气体的响应值。初步分析了ZSM-5、HY、NaA沸石对CuO气敏特性改善的机理。
Copper（Ⅱ）oxide（CuO）was synthesized by using a hydrothermal process.The CuO gas sensor was modified with zeolites by coating ZSM-5-zeolite,HY-zeolite and NaA-zeolite on the surface of CuO and mixing CuO with zeolites,respectively.The morphology and microstructure of the as-prepared materials were characterized by X-ray diffraction（XRD）and scanning electron microscopy（SEM）,respectively.The sensitivity of these materials to several kinds of VOC gases were tested.The results indicate that the response values of CuO/ZSM-5 composite materials to toluene are higher than the one of the pure CuO material;The response values of CuO/HY composite materials to alcohol,acetone and toluene increase.The sensing properties of CuO/NaA composite materials to ethanol and formaldehyde exhibited fewer improvement.The mechanism of how zeolites affects in the CuO gas sensitive properties was briefly analyzed.
作者
赵梓尧
孙炎辉
黄庆盼
赵林
王兢
ZHAO Ziyao 1,SUN Yanhui 1,2 ,HUANG Qingpan 1,ZHAO Lin 3,WANG Jing 1＊(1.Faculty of Electronic Information and Electrical Engineering,Dalian University of Technology,Dalian Liaoning 116024,China;2.College of Information and Communication Engineering,Dalian Minzu University,Dalian Liaoning 116600,China;3.Department of Computer Science and Technology,Dalian Neusoft University of Information,Dalian Liaoning 116023,PR Chin)
出处
《传感技术学报》
CAS
CSCD
北大核心
2018年第8期1157-1163,共7页
Chinese Journal of Sensors and Actuators
基金
国家自然科学基金项目(61574025)
