一种用于CrVI的聚吡咯涂层压电传感器。初步结果

E. Desimoni, I. Bassani
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引用次数: 8

摘要

石英晶体微天平的压电谐振器表面涂有电聚合聚吡咯薄膜。在-0.9 V下进行恒电位还原后,让还原后的ppy涂层谐振器与含有不同浓度CrVI的溶液反应。聚合物膜的质量变化是由六价铬氧化PPy反应过程中的离子转移引起的,产生与CrVI浓度成正比的频移。此外,一些抗氧化剂在氧化的ppy涂层谐振器上反应得到了频率偏移。观测到的响应取决于几个实验参数。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A polypyrrole-coated, piezoelectric sensor for CrVI. Preliminary results
The piezoresonators of a quartz-crystal microbalance were surface-coated with electropolymerised polypyrrole films. After potentiostatic reduction at –0.9 V, the reduced PPy-coated resonators were allowed to react with solutions containing different concentrations of CrVI. Mass changes of the polymer film, originated by ionic transfer during the oxidation reaction of PPy by hexavalent chromium, produced frequency shifts proportional to the concentration of CrVI. Also, frequency shifts were obtained by reaction of some antioxidants at oxidised PPy-coated resonators. The observed responses depend on several experimental parameters.
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