Metal-Organic Framework Based Fiber optic Ammonia Sensor

Accurate and precise detection of ammonia in water is important considering its harmful effects on human health and aquatic ecosystems. In this letter, we report a copper-based metal-organic framework (MOF) coated U-bent fiber optic sensor (U-FOS) for ammonia detection with the help of a green LED-p...

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Bibliographic Details
Published in:IEEE sensors letters 2023-12, Vol.7 (12), p.1-4
Main Authors: Menon, Swetha S, Dutta, Sourav, Rajamani, Allwyn S, Swain, Krishna Kumari, Janakiraman, Vani, Sai, V V R
Format: Article
Language:English
Subjects:
Absorption
Ammonia
ammonia sensing
Ammonium chloride
fiber optic sensor
Fiber optics
Light emitting diodes
Luminous intensity
metal-organic framework
Metal-organic frameworks
Optical fiber sensors
Optical fibers
Optical surface waves
Probes
Surface treatment
U-bent optical fiber
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Summary:Accurate and precise detection of ammonia in water is important considering its harmful effects on human health and aquatic ecosystems. In this letter, we report a copper-based metal-organic framework (MOF) coated U-bent fiber optic sensor (U-FOS) for ammonia detection with the help of a green LED-photodetector pair. This portable dip-n-detect sensor shows optical intensity changes for ammonium chloride concentrations in the range of 0.1 - 10 ppm, five times below the safe limit of 0.5 ppm in water. Thus, these MOF-coated U-FOS hold immense potential for real-time assessment of ammonia for field applications.
ISSN:2475-1472
2475-1472
DOI:10.1109/LSENS.2023.3330317