纳米CuO-SnO_2气敏材料制备及对CO_2的气敏性能研究  

Preparation of CuO-SnO_2 nanocrystalline powders and study of its gas sensitive effect on CO_2

作　　者：余龙[1] 刘天模[2] 王中长[2] 

机构地区：[1]金华职业技术学院材料与化工学院,浙江金华321007 [2]重庆大学材料科学与工程学院,重庆400044

出　　处：《材料科学与工艺》2005年第5期521-523,共3页Materials Science and Technology

摘　　要：用Sol-Gel法制备了纳米级的CuO-SnO2气敏粉体;运用DSC-TG、XRD、TEM等分析手段对不同热处理温度和不同配比浓度的粉体进行了表征,可知获得了纳米级的的不同掺杂的气敏粉体;并用所得粉体制作成气敏元件,对CO2气体进行了气敏性能测试,掺杂摩尔百分含量为50%的CuO-SnO2气敏元件对CO2有较好的气敏性能.CuO doped SnO2 nanocrystalline powders were prepared by the Sol -Gel method, treated in different temperature. The characteristics of the powders which had different concentrations were investigated by DSC -TG,XRD,TEM,show that the powders was nanocrystalline; This powder had manufactured gas sensor and its gas sensitive effect on carbon dioxide had been measured. SnO2 gas sensors doped 50mol% CuO had high sensitivity for detecting CO2.

关 键 词：气敏材料 CuO—SnO2 纳米粉体 气敏机理 

分 类 号：TQ138.11[化学工程—无机化工]