沸石与CuO复合材料的气敏性能研究  

Gas Sensing Properties of Zeolites and CuO composites

作　　者：赵梓尧 孙炎辉 黄庆盼 赵林[3] 王兢[1] 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)

机构地区：[1]大连理工大学电信学部,辽宁大连116023 [2]大连民族大学信息与通信工程学院,辽宁大连116600 [3]大连东软信息学院计算机科学与技术系,辽宁大连116023

出　　处：《传感技术学报》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)

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.

关 键 词：气体传感器 CUO 沸石 VOC气体 气敏特性 

分 类 号：TP212.2[自动化与计算机技术—检测技术与自动化装置]