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Abstract：
This work explores the use of ZIF-8, a metal-organic framework (MOF) material, for its use in the optical detection of volatile organic compounds (VOCs) in Fabry-Pérot and surface plasmon resonance (SPR)-based sensors. The experiments have been carried out with ethanol (EtOH) and show response times as low as 30 s under VOC-saturated atmospheres, and the estimated limit of detection is below 4000 ppm for both sensor types. The selectivity towards other VOCs is relatively poor, although the dynamics of adsorption/desorption differ for each VOC and could be used for selectivity purposes. Furthermore, the hydrophobicity of ZIF-8 has been confirmed and the fabricated sensors are insensitive to this compound, which is a very attractive result for its practical use in gas sensing devices.
摘要：
这项工作探讨了ZIF-8，一种金属有机框架（MOF）材料的使用，用于Fabry-Pérot和基于表面等离子体共振（SPR）的传感器中挥发性有机化合物（VOC）的光学检测。实验是用乙醇（EtOH）进行的，在VOC饱和的气氛下，响应时间低至30s，两种传感器类型的估计检测极限均低于4000ppm。对其他挥发性有机化合物的选择性相对较差，尽管每种VOC的吸附/解吸动力学不同，并且可用于选择性目的。此外，ZIF-8的疏水性已得到证实，制造的传感器对该化合物不敏感，这是一个非常有吸引力的结果，它的实际应用在气体传感设备。
