Evaluating hydrogen detection performance of an electrospun CuZnFe2O4 nanofiber sensor


Yilmaz Ö. , ERDEM R.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, cilt.45, ss.26402-26412, 2020 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 45 Konu: 50
  • Basım Tarihi: 2020
  • Doi Numarası: 10.1016/j.ijhydene.2020.06.053
  • Dergi Adı: INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
  • Sayfa Sayıları: ss.26402-26412

Özet

CuZnFe2O4 nanoparticles (<50 nm) are successfully synthesized and incorporated in polyvinyl alcohol (PVA) to fabricate nanofibers via electrospinning technique followed by calcination process under various temperatures. Scanning electron microscopy (SEM) is used to observe the morphological characteristics of both nanoparticles and nanofibers. X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and thermo-gravimetric (TG) analyses along with energy dispersive X-ray spectrometer (EDX) analysis are conducted to evaluate structure and composition of the nanofibers, respectively. The results exhibit that the calcination temperature is substantially effective on nanofiber morphology and sensing performance in the context of forming grains (beads) on the nanofibers. The highest response and recovery performance values (response and recovery time of about 6.5 s) are obtained at the calcination temperature of 500 degrees C and sensor working temperature of 250 degrees C at 500 ppm of H2 gas concentration which also corresponds The sensor selectivity against various gases is also analyzed to compare the detection performance in air. (C) 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.