纳米In2O3的微乳液合成及酒敏性能

The C2H5OH Sensing Property of Nanosized In2O3 Prepared by Microemulsion Method

摘要:

采用微乳液法制备超细In2O3粉体，粉体粒径为8nm，在In2O3基体材料中掺杂Pd及金属氧化物，研制出实用性的热线型C2H5OH气敏元件，该元件功耗低(小丁300mW)，选择性高，长期稳定性好。并考察了温度、湿度变化对气敏元件性能的影响，分析了元件的气敏机理。

Abstract:

The sensitive composite material was prepared by doping Pd and some metal oxides into ultrafine In2O3 matric material(8 nm) prepared by microemulsion method. A kind of selective C2H5OH gas sensor was developed based on a hot wire type gas sensor commercially available. The sensor possesses low power consumption , high selectivity and desirable long term stability. The dependence of the sensor output characteristics on temperature and humidity was also studied, and the working mechanism was discussed.