CdTeO_3纳米颗粒的制备及其气敏性能  

Preparation and their gas-sensing properties of CdTeO_3 nanoparticles

作　　者：安保礼[1] 张国旺[1] 许鹏程[1] 徐甲强[1] 潘庆谊[1] 

机构地区：[1]上海大学理学院化学系,上海200444

出　　处：《电子元件与材料》2008年第3期9-11,共3页Electronic Components And Materials

基　　金：上海市教委青年基金专项资助项目(No.03AQ95);上海大学系统生物学研究基金资助项目

摘　　要：以CdCl2·2.5H2O和碲粉为主要原料,在水相中反应制备CdTe前驱体,将其于500℃煅烧1h得到CdTeO3纳米颗粒。通过XRD、SEM和TEM对其物相和形貌进行了分析;并将其制成了气敏元件,进行气敏性能测试。结果表明:成功合成了单斜晶相的、平均粒径为100nm的CdTeO3纳米颗粒。以该材料制备的气敏元件对体积分数为50×10-6的乙醇有较高的灵敏度(15.1)和选择性。CdCl2·2.5H20 and tellurium powder were used as main raw materials to prepare CdTe precursor in aqueous phase. And then it was calcined at 500 ℃ for 1 h. Obtained CdTeO3 nanoparticles were characterized by XRD, SEM and TEM. Gas sensors were prepared with CdTeO3 as active component and their gas-sensing properties were investigated. The results show that monoclinic CdTeO3 nanoparticles was successfully prepared, and its average size is about 100 nm. The sensors have good sensitivity （15.1） and selectivity to 50x 10^-6 ethanol （volume fraction）.

关 键 词：电子技术 纳米颗粒 气敏材料 乙醇元件 CdTe03 

分 类 号：TP212.2[自动化与计算机技术—检测技术与自动化装置] TN304.2[自动化与计算机技术—控制科学与工程]