湿度
材料科学
碳纳米管
纳米纤维
复合材料
复合数
化学工程
纤维素
纳米技术
相对湿度
热力学
物理
工程类
作者
Penghui Zhu,Yu Liu,Zhiqiang Fang,Yudi Kuang,Yazeng Zhang,Chao Peng,Gang Chen
出处
期刊:Langmuir
[American Chemical Society]
日期:2019-03-20
卷期号:35 (14): 4834-4842
被引量:175
标识
DOI:10.1021/acs.langmuir.8b04259
摘要
Flexible and highly sensitive humidity sensors are crucial for humidity detection. In this study, a flexible cellulose nanofiber/carbon nanotube (NFC/CNT) humidity sensor with high sensitivity performance was developed via fast vacuum filtration. CNTs were well dispersed in water by using 2,2,6,6-tetramethylpiperidinyl-1-oxyl (TEMPO)-oxidized NFC as a dispersant. More importantly, NFC also acted as a humidity sensitive material, achieving superior performance of NFC/CNT humidity sensors. The obtained NFC/CNT humidity sensor with 5 wt % CNT loading exhibits outstanding sensitive performance, and its response value reaches a maximum of 69.9% (Δ I/ I0) at 95% relative humidity (RH). It also displays good bending resistance and long-term stability. In addition, the NFC/CNT humidity sensor was employed to monitor human breath. Therefore, we believe that the flexible, highly sensitive, and simply designed NFC/CNT humidity sensor is a promising candidate for various applications in the field of humidity measurement.
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