Header menu link for other important links
X
Clad modified optical fiber gas sensors based on nanocrystalline nickel oxide embedded coatings
Balusamy Renganathan,
Published in Academic Press Inc.
2017
Volume: 36
   
Pages: 139 - 143
Abstract
A clad modified optical fiber gas sensor for sensing volatile organic compound vapours (VOCs) such as formaldehyde (HCHO), ammonia (NH3), ethanol (C2H5OH) and methanol (CH3OH) up to 500 ppm was studied using nanocrystalline nickel oxide embedded coatings. Prior to the measurements, nickel oxide in two different crystallite sizes such as 24 nm and 76 nm was synthesized by calcination of reverse precipitated nickel hydroxide subsequently at 450 °C and 900 °C for 30 min. Then, samples physical properties were characterized using X-ray diffraction (XRD), thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy (FTIR), field emission scanning electron microscopy (FESEM) and high resolution transmission electron microscopy (HRTEM). Our gas sensing measurement concludes that the lower crystallite size (24 nm) nickel oxide nanocrystals exhibits superior performance to formaldehyde and ethanol vapours as compared with other two VOCs, the observed experimental results were discussed in detail. © 2017 Elsevier Inc.
About the journal
JournalOptical Fiber Technology
PublisherAcademic Press Inc.
ISSN10685200
Open AccessNo
Concepts (26)
  •  related image
    Catalyst selectivity
  •  related image
    Chemical sensors
  •  related image
    Crystallite size
  •  related image
    Ethanol
  •  related image
    Field emission microscopes
  •  related image
    Formaldehyde
  •  related image
    Fourier transform infrared spectroscopy
  •  related image
    GAS DETECTORS
  •  related image
    Gas sensing electrodes
  •  related image
    High resolution transmission electron microscopy
  •  related image
    Nanocrystals
  •  related image
    Nickel coatings
  •  related image
    Optical fibers
  •  related image
    Scanning electron microscopy
  •  related image
    Thermogravimetric analysis
  •  related image
    Volatile organic compounds
  •  related image
    X ray diffraction
  •  related image
    CRYSTALLITE SIZE EFFECTS
  •  related image
    ETHANOL VAPOURS
  •  related image
    Field emission scanning electron microscopy
  •  related image
    Gas sensing
  •  related image
    NANO-CRYSTALLINE NICKEL
  •  related image
    NICKEL HYDROXIDES
  •  related image
    OPTICAL FIBER GAS SENSORS
  •  related image
    OXIDE NANOCRYSTALS
  •  related image
    Nickel oxide