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首页> 外文期刊>RSC Advances >A fluorescent and colorimetric sensor based on a porphyrin doped polystyrene nanoporous fiber membrane for HCl gas detection
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A fluorescent and colorimetric sensor based on a porphyrin doped polystyrene nanoporous fiber membrane for HCl gas detection

机译：基于掺杂卟啉的聚苯乙烯纳米多孔纤维膜的荧光比色传感器，用于检测HCl气体

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A facile fluorescent and colorimetric sensor capable of naked-eye detection of gaseous hydrogen chloride (HCl) was developed. This technology uses the optical probe 5,10,15,20-tetraphenylporphyrin immobilized in a polystyrene nanoporous fiber membrane (TPPH2-PS NFM) which was fabricated by electrospinning. The surface morphology and porous structures of the TPPH2-PS NFM were characterized and HCl gas sensing properties of the sensor was monitored by fluorescence spectrophotometry. Exposure to HCl gas causes apparent color change of the sensor from pink to yellow-green. The sample of THF-40 showed the maximum pseudo-second-order rate constant due to its largest specific surface area and pore volume. The detection limit was found to be 46 ppb and the response time was 5?s. The sensor exhibits excellent reversibility and prompt response and recovery which shed light on developing low-cost HCl gas sensing systems.
机译：开发了一种能够通过肉眼检测气态氯化氢（HCl）的简便荧光和比色传感器。该技术使用固定在聚苯乙烯纳米多孔纤维膜（TPPH 2 -PS NFM）中的光学探针5,10,15,20-四苯基卟啉，该膜通过静电纺丝制成。表征了TPPH 2 -PS NFM的表面形态和多孔结构，并通过荧光分光光度法监测了传感器的HCl气敏特性。暴露在HCl气体中会导致传感器的颜色从粉红色变为黄绿色。 THF-40样品由于其最大的比表面积和孔体积而显示出最大的伪二级速率常数。发现检出限为46 ppb，响应时间为5？s。该传感器具有出色的可逆性以及迅速的响应和恢复能力，这为开发低成本HCl气体传感系统提供了启示。

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