Characterization and humidity sensitivity of electrospun ZrO2:TiO2 hetero-nanofibers with double jets
发表时间：2019-03-09
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- 论文类型：
- 期刊论文
- 第一作者：
- Su, Meiying
- 通讯作者：
- Wang, J (reprint author), Dalian Univ Technol, Sch Elect Sci & Technol, Dalian 116023, Peoples R China.
- 合写作者：
- Wang, Jing,Du, Haiying,Yao, Pengjun,Zheng, Yangong,Li, Xiaogan
- 发表时间：
- 2012-01-03
- 发表刊物：
- SENSORS AND ACTUATORS B-CHEMICAL
- 收录刊物：
- SCIE、EI
- 文献类型：
- J
- 卷号：
- 161
- 期号：
- 1
- 页面范围：
- 1038-1045
- ISSN号：
- 0925-4005
- 关键字：
- Humidity sensor; Hetero-nanofibers; Electrospinning; Double jets
- 摘要：
- ZrO2:TiO2 hetero-nanofibers composite was synthesized via electrospinning with double jets based on positive and negative polarity electric fields. The hetero-nanofibers were characterized by using X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), and transmission electron microscopy (TEM). ZrO2:TiO2 composite shows a netted hetero-nanofibers structure with interleaving of two different diameters nanofibers. Humidity sensors were fabricated based on ZrO2:TiO2 hetero-nanofibers. The impendence of the sensor changed four orders of magnitude from 10(5) to 10(1) k Omega in relative humidity (RH) range of 11 similar to 97% at 25 degrees C. The max humidity hysteresis was around 5% RH, and the response and recovery times were less than 5s and 20s. respectively. The properties of impendence vs. RH at different temperatures were discussed. Overall, the humidity sensor of ZrO2:Ti02 hetero-nanofibers exhibited good sensing characteristics. The humidity sensing mechanism was analyzed via dielectric loss and equivalent circuit. (C) 2011 Elsevier B.V. All rights reserved.
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