WO_3纳米棒簇的离子交换-水热合成及气敏性  

Synthesis and Gas-sensing Properties of WO_3 Nanorod Clusters Synthesized by Ion Exchange-Hydrothermal Method

作　　者：王炳山[1] 刘文茂[1] 董晓雯[2] 杨衍赜[2] 

机构地区：[1]景德镇高等专科学校生物与化学工程系,江西景德镇333000 [2]上海大学理学院化学系,上海200444

出　　处：《材料科学与工程学报》2009年第5期774-777,共4页Journal of Materials Science and Engineering

基　　金：景德镇高等专科学校青年基金资助项目(QNJJ-08-01);上海市纳米专项基金资助项目(0452nm073)

摘　　要：以钨酸钠、盐酸为原料,通过离子交换-水热途径合成了WO3纳米棒簇。X射线粉末衍射(XRD)和透射电子显微镜(TEM)表征结果表明:合成产物为均匀分布六方相WO3纳米棒簇(由直径约20nm,平均长度约150nm的纳米棒堆成)。气敏性能测试结果表明,采用本实验方法合成出的WO3纳米棒簇气敏元件工作温度低,且对丙酮、三甲胺具有很高的灵敏度和很好的响应恢复时间,显示出该材料较好的应用前景。WO3 nanorod clusters were synthesized by the approach of ion exchange-hydrothermal,using Na2WO4·2H2O and HCl as raw materials.The as-synthesized products were characterized by X-ray powder diffractometry（XRD） and transmission electron microscopy（TEM）.The characteristics indicated that the as-synthesized products were WO3 nanorod clusters with a hexagonal structure,which was piled by the nanorods with the diameter of about 20nm and average length of 150nm.The gas-sensitivity tests showed that the gas sensors based on WO3 nanorod clusters have a high sensitivity and selectivity to both TAM and acetone under lower working temperatures.These gas sensors also have a short response and recovery time.Thus these as-synthesized WO3 nanorod clusters can be used as a promising material.

关 键 词：氧化钨 纳米棒簇 气敏性能 离子交换-水热 

分 类 号：TP212.2[自动化与计算机技术—检测技术与自动化装置]