摘要
采用硝酸盐溶液浸泡方法在ＣｄＳｎＯ３粉料中，分别掺入Ｌａ、Ｐｂ、Ｎｉ及Ｃａ四种元素的氧化物．实验结果表明，掺杂改变了材料的主晶相、微结构及物相组成，从而导致材料的电导、气敏特性与纯相的ＣｄＳｎＯ３有很大区别，其中掺Ｎｉ２Ｏ３、ＰｂＯ提高粉料对乙醇的选择性，有可能开发成酒敏传感器．
La2o3,PbO,Ni2O3 and CaO have been doped in CdSnO3 Powders by impregnating them with aqueous solutions of their nitrids, respectively, which has an obvious influence on microstructures and phase constituents of gas sensing materials. Conductance and gas sensing propertied of dope CdSnO3 powders are different from that of pure phase CdSnO3. The addition of small amounts of Ni2O3 or PbO to CdSnO3 sensors greatly increases selection to C2H5OH gas at 350℃. Therefore, a good ethanol sensor can be prepared from CdSnO3-based materials with proper additives.
基金
国家自然科学基金
