摘要
采用化学沉淀法合成了纯ＺｎＯ微细粉，用浸渍法合成了Ｒｕ－ＺｎＯ气敏材料及Ａｌ２Ｏ３基催化剂。采用静态配气法测试了ＺｎＯ单层膜及双层膜旁热式气敏元件的敏感特性。实验结果表明，Ｒｕ的掺杂可提高ＺｎＯ的气体灵敏度，催化剂涂层的施加可改善Ｒｕ－ＺｎＯ对汽油、乙醇、丁烷的气敏选择性。
Pure ZnO powder was made by chemical precipitation. Ru doped ZnO powder and Al2O3 catalysts loaded with Au、Ag、Pd、Pt、Ru or Rh were also prepared with impregnation. Gas sensitivity of one layer or double layes film RuZnO sideheated type gas sensor was measured in static state. The experimental results showed, the gas sensitivity of ZnO could be increased by doping of Ru, the gas selectivity to C2H5OH, petrol or C4H10 of RuZnO could be improved by use of catalyst coating of Pt-Al2O3、Pd-Al2O3、Ru-Al2O3 or Au-Al2O3.
出处
《功能材料》
EI
CAS
CSCD
北大核心
1998年第3期281-283,共3页
Journal of Functional Materials
基金
河南省自然科学基金
关键词
金属氧化物
半导体
气体传感器
氧化锌
metal oxide semiconductors, gas sensor, catalysts, double layer film, zinc oxide
