期刊
TALANTA
卷 85, 期 2, 页码 1105-1111出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.talanta.2011.05.031
关键词
Electrospinning; Zinc oxide; Humidity; Sensor; Calcination
资金
- IYTE [2008IYTE31]
- Tubitak (Turkish Scientific Association) [TBAG 109T240]
Zinc oxide (ZnO) based fibers with a diameter of 80-100 nm were prepared by electrospinning. Polyvinyl alcohol (PVA) and zinc acetate dihydrate were dissolved in water and the polymer/salt solution was electrospun at 2.5 kV cm(-1). The resulting electrospun fibers were subjected to calcination at 500 degrees C for 2 h to obtain ZnO-based fibers. Humidity sensing properties of the fiber mats were investigated by quartz crystal microbalance (QCM) method and electrical measurements. The adsorption kinetics under constant relative humidity (RH) between 10% and 90% were explained using Langmuir adsorption model. Results of the measurements showed that ZnO-based fibers were found to be promising candidate for humidity sensing applications at room temperature. (C) 2011 Elsevier B.V. All rights reserved.
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