Fe(Ⅲ)掺杂对W_(18)O_(49)超细纳米线结构和气敏性能的影响  

The Effect of Fe(Ⅲ) Doping on Structure and Gas Sensing Properties of Ultrathin W_(18)O_(49)Nanowires

作　　者：杜帅航 岳鹿[1] 关荣锋[1] 杨秀丽[1] 许宁[2] 张文惠[1] DU Shuaihang;YUE Lu;GUAN Rongfeng;YANG Xiuli;XU Ning;ZHANG Wenhui(Jiangsu Key Laboratory of New Environmental Protection, Yancheng Institute of Technology, Yancheng 224051, China;School of Mechanical Engineering, Yancheng Institute of Technology, Yancheng 224051, China)

机构地区：[1]盐城工学院江苏省新型环保重点实验室,盐城224051 [2]盐城工学院机械工程学院,盐城224051

出　　处：《华南师范大学学报（自然科学版）》2021年第3期22-28,共7页Journal of South China Normal University(Natural Science Edition)

基　　金：国家重点研发计划项目(2017YFC0703202);国家自然科学基金项目(51802276)。

摘　　要：针对纯氧化钨纳米材料丙酮传感器存在灵敏度低、选择性差、检测温度高等问题,通过简单的溶剂热法制备Fe掺杂氧化钨(Fe-W_(18)O_(49))超细纳米线,优化氧化钨材料对丙酮的敏感性能.结果表明:Fe(III)的掺杂不仅抑制了W_(18)O_(49)晶相向WO3晶相的转化,起到了稳定W_(18)O_(49)晶相的作用,而且优化了其气敏性能.当掺杂比n(Fe)/n(W)为0.10时,其气敏性能最佳.该材料在最佳工作温度(220℃)下对丙酮(体积分数为5×10^(-5))的灵敏度达11.4,响应/恢复时间为14/16 s,并且对丙酮有很好的选择性.Fe(Ⅲ)-doped ultrathin tungsten oxide(Fe-W_(18)O_(49))nanowires were prepared with the simple solvent-thermal method to optimize the acetone-sensing performance of tungsten oxide acetone sensor materials for reason of the low response,poor selectivity and high detection temperature of pure tungsten oxide.The results showed that Fe(Ⅲ)doping not only inhibited the transformation of W_(18)O_(49)crystal phase to WO3 crystal phase but also optimized its gas-sensing performance.The W_(18)O_(49)nanowires with doping ratio(n(Fe)/n(W))of 0.10 demonstrated the best performance.This material showed a sensitivity of 11.4 for acetone with a volume fraction of 5×10^(-5) at the optimum operating temperature of 220℃,with the response/recovery time of 14/16 s and good selectivity.

关 键 词：氧化钨 Fe(Ⅲ)掺杂 超细纳米线 气敏性能 丙酮 

分 类 号：O643.36[理学—物理化学]