DETERMINATION OF ACTIVATION ENERGY FOR GRAIN GROWTH OF ELECTROSPUN ZnFe2O4 NANOFIBERS

  • Van Hoang Nguyen Le Quy Don Technical University
  • Minh Duc Le Le Quy Don Technical University
  • Manh Hung Nguyen Le Quy Don Technical University
  • Van Duy Nguyen Hanoi University of Science and Technology
  • Duc Hoa Nguyen Hanoi University of Science and Technology
  • Van Hieu n Phenikaa University
Keywords: Activation energy, ZnFe2O4, nanofibers, electrospinning

Abstract

In this study, ZnFe2O4 nanofibers were fabricated by facile electrospinning method and subsequent calcination process. The scanning electron microscopy (SEM) images showed that ZnFe2O4 nanofibers which were in diameters of 30-100 nm and consisted of nanograins had typical morphologies of spider nets. The X-ray diffraction (XRD) patterns revealed the typical cubic structure of the ZnFe2O4 nanofibers. The energy dispersive X-ray spectroscopy (EDX) results exhibited the presence of Zn, Fe, and O elements in the synthesized nanofibers. The results indicated that the nanograins size increased with the increase of annealing temperatures. The activation energy for grain growth in electrospun ZnFe2O4 nanofibers was estimated to be 10 kJ/mol. Since this value of activation energy was quite small, nanograins easily grew during the calcination process.

điểm /   đánh giá
Published
2021-09-23
Issue
Vol. 16 No. 03 (2021)
Section
ARTICLES