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首页> 外文期刊>Journal of Applied Polymer Science >Polyvinylpyrrolidone electrospun nanofibers doped with Eu3+: Fabrication, characterization, and application in gas sensors
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Polyvinylpyrrolidone electrospun nanofibers doped with Eu3+: Fabrication, characterization, and application in gas sensors

机译：聚乙烯吡咯烷酮电纺纳米纤维掺杂有EU3 +：制造，表征和在气体传感器中的应用

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摘要

Polymer nanofibers (NFs)-based optical sensors hold great potential to fabricate low-cost devices capable to monitor different volatile organic compounds (VOCs) related to healthcare and environmental conditions. For instance, ammonia detection is a subject of paramount importance, owing to the serious health problems associated to the exposition to this volatile. In this context, here, we report on the development of optical electrospun NFs composed of polyvinylpyrrolidone (PVP) doped with Europium (Eu3+) aiming at the detection of ammonia. The fabricated NFs were characterized by scanning electron microscopy, transmission electron microscopy, energy-dispersive X-ray spectroscopy, fluorescence microscopy, photoluminescence, and excited state lifetime spectroscopies. The luminescence properties changes were evaluated by exposing the PVP_Eu3+ NFs to ammonia and other distinct interfering VOCs including toluene, tetrahydrofuran, acetone, triethylamine, acetic acid, and chloroform. The sensor exhibited a linear response to ammonia exposition in the concentration range from 0 to 50ppm, yielding a detection limit of 4.7 ppm. Our results indicate the potential application of PVP_Eu3+ electrospun NFs in optical sensors for ammonia detection at room temperature based on luminescence quenching. (c) 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47775.
机译：基于聚合物纳米纤维（NFS）的光学传感器具有制造能够监测与医疗保健和环境条件相关的不同挥发性有机化合物（VOC）的低成本装置的潜力。例如，由于与这种挥发性的阐述相关的严重健康问题，氨检测是至关重要的主题。在此背景下，这里，我们报告了由掺杂掺杂掺杂铕（EU3 +）的聚乙烯基吡咯烷酮（PVP）组成的光学电纺NFS的开发旨在检测氨。通过扫描电子显微镜，透射电子显微镜，能量分散X射线光谱，荧光显微镜，光致发光和激发状态寿命光谱，表征制造的NFS。通过将PVP_EU3 + NFS暴露于氨和其他不同的干扰VOC来评估发光性能变化，包括甲苯，四氢呋喃，丙酮，三乙胺，乙酸和氯仿。该传感器表现出对浓度范围为0至50ppm的氨曝气的线性反应，得到4.7ppm的检测限。我们的结果表明，基于发光淬火的室温，PVP_EU3 + Electrom NFS在光学传感器中的潜在应用。 （c）2019 Wiley期刊，Inc.J.Phill。聚合物。 SCI。 2019,136,4775。

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