无机材料学报 ›› 2021, Vol. 36 ›› Issue (9): 950-958.DOI: 10.15541/jim20200675

所属专题: 【信息功能】敏感陶瓷

• 研究论文 • 上一篇    下一篇

SnO2/NiO复合半导体纳米纤维的制备及气敏性能研究

储宇星1(), 刘海瑞1,2, 闫爽1()   

  1. 1.大连工业大学 纺织与材料工程学院, 大连 116034
    2.东北大学 材料科学与工程学院, 沈阳 110819
  • 收稿日期:2020-11-26 修回日期:2020-12-31 出版日期:2021-09-20 网络出版日期:2021-01-25
  • 通讯作者: 闫 爽, 讲师. E-mail: yanye150@outlook.com
  • 作者简介:储宇星(1994-), 男, 硕士研究生. E-mail: 434611816@qq.com
  • 基金资助:
    辽宁省自然科学基金计划指导项目(2019-ZD-0129)

Preparation and Gas Sensing Properties of SnO2/NiO Composite Semiconductor Nanofibers

CHU Yuxing1(), LIU Hairui1,2, YAN Shuang1()   

  1. 1. School of Textile and Materials Engineering, Dalian Polytechnic University, Dalian 116034, China
    2. School of Materials Science and Engineering, Northeastern University, Shenyang 110819, China
  • Received:2020-11-26 Revised:2020-12-31 Published:2021-09-20 Online:2021-01-25
  • Contact: YAN Shuang, lecturer. E-mail: yanye150@outlook.com
  • About author:CHU Yuxing(1994-), male, Master candidate. E-mail: 434611816@qq.com
  • Supported by:
    Natural Science Foundation of Liaoning Province(2019-ZD-0129)

摘要:

采用静电纺丝技术结合化学沉淀法和高温煅烧处理, 制备了具有不同Sn含量的SnO2/NiO复合半导体纳米纤维。采用扫描电子显微镜(SEM), X射线衍射仪(XRD)和能量色散X射线光谱仪(EDS)对样品的形貌, 结构以及各元素含量进行表征。以乙醇为目标气体, 探究SnO2/NiO纳米纤维的气体传感性质, 以及Sn含量对复合纳米纤维气敏性能的影响。研究结果表明, SnO2/NiO复合纳米纤维具有三维网状结构, SnO2复合对NiO纳米纤维的气敏性能具有明显的增强作用。随着SnO2含量的增加, 复合纤维对乙醇气体的响应灵敏度增强, 其中响应最高的复合纳米纤维在最佳工作温度160 ℃条件下对体积分数为100×10-6乙醇气体的响应灵敏度为13.4, 是NiO纳米纤维最大响应灵敏度的8.38倍。与市面常见的乙醇气体传感器MQ-3相比, SnO2/NiO复合纳米纤维的最佳工作温度更低, 响应灵敏度更高, 具有一定的实际应用价值。

关键词: 氧化镍, 二氧化锡, 纳米纤维, 气敏性能, 复合材料

Abstract:

SnO2/NiO composite semiconductor nanofibers with different Sn contents were prepared by electrospinning combined with chemical precipitation and high temperature calcination. Morphology, structure and elemental content of the samples were characterized. Taking ethanol as the target gas, the gas sensing properties of SnO2/NiO nanofibers and the influence of Sn content on the gas sensing properties of the composite nanofibers were investigated. The results show that the SnO2/NiO composite nanofibers have a three-dimensional network structure, and the SnO2 composite can significantly enhance gas sensing properties of NiO nanofibers. With the increase of SnO2 content in composite fibers, the response of samples to ethanol is enhanced. Among them, the SnO2/NiO nanofibers with the highest sensitivity show response value of 13.4 to 100×10-6 ethanol (volume fraction) at the optimum working temperature of 160 ℃. The maximum response value of the SnO2/NiO nanofibers exhibits 8.38 times enhancement compared to that of NiO nanofibers. Compared with comercial MQ-3, a commonly used ethanol sensor, the SnO2/NiO composite nanofibers have lower optimal working temperature and higher response sensitivity, which shows great potential in practical application.

Key words: nickel oxide, tin dioxide, nanofibers, gas sensitivity, composite materials

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