CBD-Grown MoS₂ Thin Films on Plastic Optical Fiber for NH3 Sensing: Fabrication and Performance
Nor Akmar MOHD YAHYA, Mohd Rashid YUSOF HAMID, Abdul Hadi ISMAIL, Nurul Atiqah Izzati MD ISHAK, Mohd Hanif YAACOB, Saidur RAHMAN
Abstract. This study presents the development of an optical ammonia (NH3) gas sensor based on plastic optical fiber (POF) coated with molybdenum disulfide (MoS2), synthesized via chemical bath deposition (CBD). The MoS₂ thin film was uniformly deposited along the unclad region of the fiber, allowing surface interaction with NH3 molecules through nanoscale adsorption mechanisms. These interactions result in measurable changes in absorbance, enabling real-time detection of NH3. The morphological and optical properties of the MoS₂ coating were characterized using field emission scanning electron microscopy (FESEM), energy-dispersive X-ray spectroscopy (EDX), and UV–vis spectroscopy. The sensor exhibited a sensitivity of 1.55 a.u./% NH3 over a concentration range of 0.0625% to 1.00%, demonstrating reliable performance for low-level NH3 detection. This work highlights the potential of nanomaterial-coated fiber optic sensors for environmental monitoring applications.
Keywords
Molybdenum Disulfide, Optical Ammonia Sensing, CBD, POF
Published online 1/15/2026, 8 pages
Copyright © 2026 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA
Citation: Nor Akmar MOHD YAHYA, Mohd Rashid YUSOF HAMID, Abdul Hadi ISMAIL, Nurul Atiqah Izzati MD ISHAK, Mohd Hanif YAACOB, Saidur RAHMAN, CBD-Grown MoS₂ Thin Films on Plastic Optical Fiber for NH3 Sensing: Fabrication and Performance, Materials Research Proceedings, Vol. 59, pp 56-63, 2026
DOI: https://doi.org/10.21741/9781644903957-8
The article was published as article 8 of the book Separation Technology
Content from this work may be used under the terms of the Creative Commons Attribution 3.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
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