H2 sensor based on tapered optical fiber coated with MnO2 nanostructures

Nor Akmar Mohd Yahya, Mohd Rashid Yusof Hamid, Siti Azlida Ibrahim, Boon Hoong Ong, Norizah Abdul Rahman, Md Zain Ahmad Rifqi, Mohd Adzir Mahdi, Mohd Hanif Yaacob

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

A novel hydrogen (H2) sensor was developed using optical fiber coated with manganese dioxide (MnO2) nanostructures. Optical multimode fiber (MMF) of 125 μm in diameter as the transducing platform was tapered to 20 μm to enhance the evanescent field of the light propagates in the fiber core. The tapered fiber was coated with MnO2 nanograins synthesised via chemical bath deposition (CBD) process. Catalytic Palladium (Pd) was sputtered onto the MnO2 layer to improve the H2 detection. The sensing layer was characterized through Field Emission Scanning Electron Microscopy (FESEM), Energy Dispersive X-ray (EDX), X-ray Diffraction (XRD) and Raman Spectroscopy to verify the properties of MnO2. Two sets of sensors consist of as-prepared MnO2 and 200 °C annealed MnO2 were tested towards H2 gas. The tapered optical fiber coated with Pd/MnO2 nanograins was found to be sensitive towards H2 with different concentrations in synthetic air at 240 °C operating temperature. The annealed sensor showed higher response and sensitivity as compared to the as-prepared sensors when measured in the visible to near infra-red optical wavelength range. The absorbance response of the annealed Pd/MnO2 on fiber has increased to 65% as compared to 20% for the as-prepared Pd/MnO2 upon exposure to 1% H2 in synthetic air.

Original languageEnglish
Pages (from-to)421-427
Number of pages7
JournalSensors and Actuators, B: Chemical
Volume246
DOIs
Publication statusPublished - 1 Jul 2017

Fingerprint

Palladium
Optical fibers
palladium
Nanostructures
optical fibers
fibers
sensors
Sensors
Fibers
Evanescent fields
Multimode fibers
air
Air
operating temperature
dioxides
Field emission
Manganese
Raman spectroscopy
manganese
field emission

Keywords

  • Absorbance response
  • Chemical bath deposition
  • Hydrogen sensor
  • Manganese dioxide nanostructures
  • Optical sensor
  • Tapered optical fiber

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry
  • Electrical and Electronic Engineering

Cite this

Yahya, N. A. M., Hamid, M. R. Y., Ibrahim, S. A., Ong, B. H., Rahman, N. A., Ahmad Rifqi, M. Z., ... Yaacob, M. H. (2017). H2 sensor based on tapered optical fiber coated with MnO2 nanostructures. Sensors and Actuators, B: Chemical, 246, 421-427. https://doi.org/10.1016/j.snb.2017.02.084

H2 sensor based on tapered optical fiber coated with MnO2 nanostructures. / Yahya, Nor Akmar Mohd; Hamid, Mohd Rashid Yusof; Ibrahim, Siti Azlida; Ong, Boon Hoong; Rahman, Norizah Abdul; Ahmad Rifqi, Md Zain; Mahdi, Mohd Adzir; Yaacob, Mohd Hanif.

In: Sensors and Actuators, B: Chemical, Vol. 246, 01.07.2017, p. 421-427.

Research output: Contribution to journalArticle

Yahya, NAM, Hamid, MRY, Ibrahim, SA, Ong, BH, Rahman, NA, Ahmad Rifqi, MZ, Mahdi, MA & Yaacob, MH 2017, 'H2 sensor based on tapered optical fiber coated with MnO2 nanostructures', Sensors and Actuators, B: Chemical, vol. 246, pp. 421-427. https://doi.org/10.1016/j.snb.2017.02.084
Yahya, Nor Akmar Mohd ; Hamid, Mohd Rashid Yusof ; Ibrahim, Siti Azlida ; Ong, Boon Hoong ; Rahman, Norizah Abdul ; Ahmad Rifqi, Md Zain ; Mahdi, Mohd Adzir ; Yaacob, Mohd Hanif. / H2 sensor based on tapered optical fiber coated with MnO2 nanostructures. In: Sensors and Actuators, B: Chemical. 2017 ; Vol. 246. pp. 421-427.
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abstract = "A novel hydrogen (H2) sensor was developed using optical fiber coated with manganese dioxide (MnO2) nanostructures. Optical multimode fiber (MMF) of 125 μm in diameter as the transducing platform was tapered to 20 μm to enhance the evanescent field of the light propagates in the fiber core. The tapered fiber was coated with MnO2 nanograins synthesised via chemical bath deposition (CBD) process. Catalytic Palladium (Pd) was sputtered onto the MnO2 layer to improve the H2 detection. The sensing layer was characterized through Field Emission Scanning Electron Microscopy (FESEM), Energy Dispersive X-ray (EDX), X-ray Diffraction (XRD) and Raman Spectroscopy to verify the properties of MnO2. Two sets of sensors consist of as-prepared MnO2 and 200 °C annealed MnO2 were tested towards H2 gas. The tapered optical fiber coated with Pd/MnO2 nanograins was found to be sensitive towards H2 with different concentrations in synthetic air at 240 °C operating temperature. The annealed sensor showed higher response and sensitivity as compared to the as-prepared sensors when measured in the visible to near infra-red optical wavelength range. The absorbance response of the annealed Pd/MnO2 on fiber has increased to 65{\%} as compared to 20{\%} for the as-prepared Pd/MnO2 upon exposure to 1{\%} H2 in synthetic air.",
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