东北大学学报:自然科学版 ›› 2018, Vol. 39 ›› Issue (12): 1769-1773.DOI: 10.12068/j.issn.1005-3026.2018.12.019

• 资源与土木工程 • 上一篇    下一篇

基于NiO纳米薄膜的NO2传感器

赵思凯, 钟祥熙, 周鹏飞, 沈岩柏   

  1. (东北大学 资源与土木工程学院, 辽宁 沈阳110819)
  • 收稿日期:2017-09-15 修回日期:2017-09-15 出版日期:2018-12-15 发布日期:2018-12-19
  • 通讯作者: 赵思凯
  • 作者简介:赵思凯(1991-),男,四川广元人,东北大学博士研究生; 沈岩柏(1978-),男,黑龙江密山人,东北大学教授,博士生导师.冯明杰(1971-), 男, 河南禹州人, 东北大学副教授; 王恩刚(1962-), 男, 辽宁沈阳人, 东北大学教授,博士生导师.
  • 基金资助:
    国家自然科学基金资助项目(51171041).国家自然科学基金资助项目 (51422402, 51674067); 中央高校基本科研业务费专项资金资助项目 (N150101001,N160106004).

NO2 Gas Sensor Based on NiO Nanofilms

ZHAO Si-kai, ZHONG Xiang-xi, ZHOU Peng-fei, SHEN Yan-bai   

  1. School of Resources & Civil Engineering, Northeastern University, Shenyang 110819, China.
  • Received:2017-09-15 Revised:2017-09-15 Online:2018-12-15 Published:2018-12-19
  • Contact: SHEN Yan-bai
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摘要: 以四水合乙酸镍(NiC4H6O4·4H2O)、氨水(NH3·H2O)和乙二醇甲醚(C3H8O)为前驱体,采用溶胶–凝胶提拉涂膜法制备NiO纳米薄膜,考察了提拉速度与涂膜层数对NiO纳米薄膜形貌结构与NO2气敏特性的影响.结果表明,在提拉速度为400μm/s,涂膜层数为2层的条件下可获得表面形貌均一、疏松多孔的NiO纳米薄膜,其主要由直径为20~30nm面心立方结构的NiO晶体颗粒构成.气敏检测结果表明,NiO纳米薄膜呈现p型半导体特性,在工作温度150℃条件下对NO2表现出良好的响应-恢复特性与可逆性,并对其气敏机理进行了探讨.

关键词: NiO纳米薄膜, 溶胶–凝胶法, NO2, 气敏特性, 气敏机理

Abstract: NiO nanofilms were synthesized by sol-gel dip-coating method using the mixture of NiC4H6O4·4H2O, NH3·H2O and C3H8O as the precursor. The effects of pulling speed and coating layer on the morphology, structure and NO2 sensing properties of NiO nanofilms were investigated. Uniform and porous NiO nanofilms were obtained under the preparation conditions of pulling speed of 400μm/s and coating layer of 2. The films were composed of cubic nanocrystalline NiO particles with the diameter of 20~30nm. NO2 sensing measurements demonstrated that NiO nanofilms with p-type semiconductor characteristic show good response-recovery properties as well as excellent reversibility. NO2 sensing mechanism of NiO nanofilms was investigated and discussed.

Key words: NiO nanofilm, sol-gel method, NO2, gas sensing properties, gas sensing mechanism

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