Selective detection of trace p-xylene by polymer-coated QCM sensors
Selective detection of trace p-xylene by polymer-coated QCM sensors
复制标题
通过聚合物涂层 QCM 传感器选择性检测痕量对二甲苯
DOI：
10.1016/j.snb.2012.03.060
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发表时间：
2012-05-20
影响因子：
8.4
通讯作者：
Du, Binyang
中科院分区：
文献类型：
--
作者：
Fan, Xiao;Du, Binyang
研制了两种聚合物包覆的QCM传感器，分别以甲苯、乙酸丁酯和正丁醇为载体，对空气中痕量对二甲苯蒸气的检测表现出较高的灵敏度、稳定性和选择性。聚合物分别为聚4-乙烯基苄基氯(PVBC)和聚(4-乙烯基氯-甲基丙烯酸甲酯)(P(VBC-co-MMA))。PVBC和P(VBC-co-MMA)包覆的QCM传感器都是可重复使用的，可以通过在真空中释放吸附的蒸汽来重新激活。QCM数据还表明，MMA的加入可以提高聚合物涂层QCM传感器对对二甲苯蒸气的灵敏度。对于涂有119 nm厚P(VBC-co-MMA)薄膜的QCM传感器，其最低检测下限可达54ppm，频移为9.6 Hz(-Delta F-3)。这两种聚合物涂层QCM传感器在太阳能电池阵列背面薄膜镀膜过程中对二甲苯蒸气浓度的监测和控制，保障太阳能电池阵列工厂相关人员的健康方面具有潜在的应用前景。(C)2012爱思唯尔B.V.保留所有权利。
Two types of polymer-coated QCM sensors were developed, which exhibited high sensitivity, stability and selectivity for the detection of trace p-xylene vapor in air over toluene, butyl acetate and 1-butanol, which are usually produced in the coating process of films on the back of solar cell array. The polymers were poly(4-vinylbenzyl chloride) (PVBC) and poly(4-vinylbenzyl chloride-co-methyl methacrylate) (P(VBC-co-MMA)), respectively. Both PVBC and P(VBC-co-MMA)-coated QCM sensors were reusable and can be reactivated by releasing the adsorbed vapor in vacuum. The QCM data also indicated that the incorporation of MMA can enhance the sensitivity of the polymer-coated QCM sensor toward p-xylene vapor. The lowest detection limit can reach 54 ppm for the QCM sensor coated with 119 nm thick P(VBC-co-MMA) thin film, leading to the frequency shift of 9.6 Hz (-Delta F-3). These two types of polymer-coated QCM sensors may find potential application in the monitoring and controlling the concentration of p-xylene vapor in the coating process of thin films on the back of solar cell array, ensuring the health of the related personnel in the factory of solar cell array. (C) 2012 Elsevier B.V. All rights reserved.