Fabrication and formaldehyde-sensing property of quartz crystal microbalance (QCM) coated with PVP-MWCNTs composites

被引：2

作者：

He, Yingfei ^{[1
]}

Jiang, Yadong ^{[1
]}

Tai, Huiling ^{[1
]}

Xie, Guangzhong ^{[1
]}

机构：

[1] State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Information, University of Electronic Science and Technology of China, Chengdu

来源：

Key Engineering Materials | 2015年 / 645卷

关键词：

Formaldehyde; Multiwalled carbon nanotubes (MCWNTs); Polyvinyl pyrrolidone (PVP); Quartz crystal microbalance (QCM); Sensors;

D O I：

10.4028/www.scientific.net/KEM.645-646.719

中图分类号：

学科分类号：

摘要：

In this paper, the quartz crystal microbalance (QCM) sensors coated with polyvinyl pyrrolidone (PVP)-multiwalled carbon nanotubes (MCWNTs) nanocomposite thin films were developed by the spray process, which were used for the detection of low concentration formaldehyde at room temperature. The surface morphology and structure of films was analyzed by scanning electron microscope (SEM), UV-Vis absorption spectrometry, respectively, and the formaldehyde-sensing properties of sensors were investigated. The results showed that the prepared QCM gas sensor exhibited the linear characteristic, fast response, good reproducibility to low concentration formaldehyde within 6 ppm, and the poisoning of films was observed when the formaldehyde concentration exceeded 6ppm. Moreover, the sensitivity of the sensor could achieve up to 1Hz/ppm and had the good stability of response values. © (2015) Trans Tech Publications, Switzerland.

引用

页码：719 / 723

页数：4

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