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Fast and All-Optical Hydrogen Sensor Based on Gold-Coated Optical Fiber Functionalized with Metal–Organic Framework Layer
journal contribution
posted on 2019-12-14, 03:14 authored by Elena Miliutina, Olga Guselnikova, Sofiia Chufistova, Zdenka Kolska, Roman Elashnikov, Vasilii Burtsev, Pavel Postnikov, Vaclav Svorcik, Oleksiy LyutakovRemote detection of hydrogen, without the utilization
of electronic
component or elevated temperature, is one of the hot topics in the
hydrogen technology and safety. In this work, the design and realization
of the optical fiber-based hydrogen sensor with unique characteristics
are proposed. The proposed sensor is based on the gold-coated multimode
fiber, providing the plasmon properties, decorated by the IRMOF-20
layer with high selectivity and affinity toward hydrogen. The IRMOF-20
layer was grown by a surface-assisted technique, and its formation
and properties were studied using X-ray photoelectron spectroscopy,
Raman, X-ray diffraction, and Brunauer–Emmett–Teller
techniques. Simultaneous ellipsometry results indicate the apparent
changes of the refractive index of the IRMOF-20 layer due to hydrogen
sorption. As results, the presence of hydrogen led to the pronounced
changes of plasmon band wavelength position as well as its intensity
increase. The proposed hydrogen sensors were favorably distinguished
by a high response/recovery rate, excellent selectivity toward the
hydrogen, very low temperature dependency, functionality at room or
lower temperature, insensitivity toward the humidity, and the presence
of CO2, CO, or NO2. Additionally, the proposed
hydrogen sensor showed good reversibility, reproducibility, and long-term
stability.
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Gold-Coated Optical Fiber Functionalizedsurface-assisted techniquetemperature dependencyAll-Optical Hydrogen Sensorhydrogen sensorX-ray diffractionhydrogen technologyintensity increaseCO 2hydrogen sorptiongold-coated multimode fiberhydrogen sensorsIRMOF -20 layerfiber-based hydrogen sensorSimultaneous ellipsometry resultsplasmon band wavelength positionX-ray photoelectron spectroscopyplasmon properties
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