A new and high response gas sensor for methanol using molecularly imprinted technique
A new and high response gas sensor for methanol using molecularly imprinted technique
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DOI：
10.1016/j.snb.2014.10.027
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发表时间：
2015-02-01
影响因子：
8.4
通讯作者：
Liu, Q. J.
中科院分区：
文献类型：
--
作者：
Zhu, Q.;Zhang, Y. M.;Liu, Q. J.
利用分子印迹粉末（MIPs）对甲醇具有特殊的识别位点，制备了一种具有高响应和高选择性的新型气敏元件。采用X射线衍射（XRD）、拉曼光谱、傅立叶红外光谱（FT-IR）和透射电镜（TEM）对聚合物进行了表征。研究了分子印迹聚合物对甲醇的气敏性能。实验结果表明，基于该分子印迹聚合物的传感器对甲醇蒸气具有良好的气敏性能，其中x = 1：4（x =甲醇：甲基丙烯酸，摩尔比）的传感器性能最好。在130 ℃的最佳工作温度下，传感器（x = 1：4）对1 ppm甲醇的响应为41，响应和恢复时间分别为40 s和50 s。这些优良的气敏特性使其成为测定空气中甲醇蒸气的理想材料。(C)2014爱思唯尔有限公司版权所有。
A new gas sensor with high response and selectivity was fabricated by using molecularly imprinted powders (MIPs) which provide special recognition sites to methanol. The MIPs were characterized by X-ray diffraction (XRD), Raman spectroscopy, Fourier transform infrared spectrometer (FT-IR) and transmission electron microscopy (TEM), respectively. The gas sensing properties of MIPs to methanol were investigated. The experimental results indicate that the sensors based on the MIPs show excellent gas sensing properties to methanol vapor, and the properties of the sensor with x = 1:4 (x = methanol: methyl acrylic acid, molar ratio) are the best. At the optimal operating temperature of 130 degrees C, the response of the sensor (x = 1: 4) to 1 ppm methanol is 41, and the response and recovery times are 40 s and 50 s, respectively. Those good gas sensing properties make the MIPs the promising candidates for determining methanol vapor in air. (C) 2014 Elsevier B.V. All rights reserved.