PANI/TiO2复合膜的制备及其气敏响应  

Preparation of PANI/TiO2 Composite Membrane and Its Gas-sensing Behavior

作　　者：朱涛 常燕 段力峰 刘成阳 张金宝 唐凯 颜华 Zhu Tao;Chang Yan;Duan Lifeng;Liu Chengyang;Zhang Jinbao;Tang Kai;Yan Hua(Institute 53,China North Industries Group Corporation,Jinan 250031,China)

机构地区：[1]中国兵器工业集团第五三研究所

出　　处：《工程塑料应用》2019年第12期110-114,共5页Engineering Plastics Application

摘　　要：为了获得高灵敏度的气敏传感器,采用溶胶–凝胶法和原位聚合法,将金属氧化物二氧化钛(TiO2)与导电高分子聚苯胺(PANI)复合制得了PANI/TiO2复合膜。利用原子力显微镜、X射线光电子能谱、傅立叶变换红外光谱和紫外–可见光吸收光谱等对其进行分析表征,并对其气敏性能进行了研究。结果表明,PANI/TiO2复合膜比表面积较纯PANI大,有利于其气敏性能,复合膜内各组分间存在化学键相互作用;复合膜在常温下对三甲基胺等类似的有机挥发气氛具有明显的气敏响应并能用高纯氮气脱吸,可用于构筑超敏感的化学传感器。In order to obtain a gas sensor with high sensitivity,by combining metal oxides titanium dioxide(TiO2)with conductive polymer polyaniline(PANI),PANI/TiO2 composite membrane was prepared by sol-gel method and in situ polymerization and characterized by means of AFM,XPS,FTIR and UV–Vis,the gas-sensing properties were also studied.The results show that,the specific surface area of the composite membrane increases compared with pure PANI,there are chemical bond interactions among the components in PANI/TiO2 composite membrane.The membrane has obvious gas sensitive response to organic volatilization atmosphere such as trimethylamine at room temperature,and can be desorbed by high-purity nitrogen,which can be used to build super sensitive chemical sensor.

关 键 词：聚苯胺 二氧化钛 原位聚合 气敏响应 

分 类 号：TQ317[化学工程—高聚物工业]