Reduced graphene oxide-polyethylene oxide composite films for humidity sensing via quartz crystal microbalance
Reduced graphene oxide-polyethylene oxide composite films for humidity sensing via quartz crystal microbalance
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DOI：
10.1016/j.snb.2017.09.028
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发表时间：
2018-02
影响因子：
8.4
通讯作者：
Si Wang;G. Xie;Yuanjie Su;L. Su;Qiuping Zhang;H. Du;H. Tai;Yadong Jiang
中科院分区：
文献类型：
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作者：
Si Wang;G. Xie;Yuanjie Su;L. Su;Qiuping Zhang;H. Du;H. Tai;Yadong Jiang
在石英晶体微天平(QCM)上构建了一种用于环境湿度检测的氧化石墨烯(RGO)-聚氧化乙烯(PEO)复合膜。用扫描电子显微镜、傅里叶变换红外光谱、拉曼光谱和紫外-可见光谱对所制备的RGO-PEO复合材料的形貌和化学性能进行了表征。与纯PEO薄膜(10 Hz/%RH)相比，RGO薄膜的动态响应和灵敏度(20 GHz/%RH)有了显著的提高。此外，基于RGO-PEO复合薄膜的传感器具有快速的响应和恢复率(分别为S 11和S 7在84%RH@90%)、负滞后(1.21%RH)、稳定的重复性和出色的长期稳定性。本研究不仅探索了吸湿性绝缘聚合物基复合材料用于湿度检测的可行性，而且为QCM基湿度传感器的改进和优化提供了一条途径。
A reduced graphene oxide (RGO)-Polyethylene Oxide (PEO) composite film was constructed on quartz crystal microbalance (QCM) with composite and bilayer film structures for ambient humidity detection. The morphology and chemical properties of the fabricated RGO-PEO composite materials were characterized by SEM, FTIR, Raman spectra and UV–vis spectroscopy respectively. The addition of RGO into PEO film contributes to a remarkable enhancement in dynamic response and sensitivity (20 Hz/%RH) compared with the pure PEO film (10 Hz/%RH). Furthermore, RGO-PEO composite film based sensor holds rapid response and recovery rates (11 s and 7 s at 84%RH @90% respectively), negative hysteresis (1.21%RH), stable repeatability and excellent long term stability. This research not only explore the feasibility of hygroscopic insulating polymer based composite in humidity detection but also provide an approach for advancement/optimization of QCM based humidity sensor.