Precise detection of volatile organic compounds (VOCs) using high-sensitivity fiber-optic probes is highly desirable for rapid screening in the fields of medicine and food processing. A novel spectral surface plasmon resonance (SPR)–based fiber-optic sensor incorporating metal/graphene/Ti₃C₂T_x MXene layers for the detection of VOCs such as acetone and ethanol is proposed in this study. For the detection of acetone, optimum sensitivities of 5150, 4500, and 4200 nm/refractive index unit (RIU) are obtained using simulations, for sensors with Au, Ag, and Al, respectively, as metal layer. The highest sensitivity achieved at reasonably good detection accuracy is 19,750 nm/RIU, using a Au/graphene/Ti₃C₂T_x sensor, for VOCs with refractive index 1.434.

Graphical Abstract

中文翻译：

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基于超高灵敏度表面等离子体共振的光纤传感器，该传感器使用具有Ti 3 C 2 T x MXene覆盖层的金属石墨烯层

使用高灵敏度光纤探针精确检测挥发性有机化合物（VOC），对于在医药和食品加工领域进行快速筛选非常需要。在这项研究中，提出了一种新颖的基于光谱表面等离子体激元共振（SPR）的光纤传感器，该传感器结合了金属/石墨烯/ Ti ₃ C ₂ T _x  MXene层，用于检测丙酮和乙醇等挥发性有机化合物。对于丙酮的检测，对于分别以Au，Ag和Al作为金属层的传感器，通过模拟获得了5150、4500和4200 nm /折射率单位（RIU）的最佳灵敏度。使用Au /石墨烯/ Ti ₃ C ₂ T ，以相当好的检测精度获得的最高灵敏度为19,750 nm / RIU_x传感器，用于折射率为1.434的VOC。

图形概要