Effect of Flow Rate on Characterizations of ZnO Nanofibers using Electrospinning Method

Abstract

ZnO nanofibers with polycrystalline structure were synthesized by an
electrospinning method. X-ray diffraction measurements showed that ZnO
nanofibers have pure hexagonal wurtzite structure. The effects of flow rate
parameter on ZnO nanofibers were examined using atomic force
microscopy, field emission scanning electron microscopy. The optical
energy gap was estimated and optical behavior was studied using UV-Vis
spectroscopy. It was found that the optical energy gap is (3.9) eV. It was
noted that the average diameter of these nanofibers increases from (82-132)
nm with increasing the flow rate from (1- 3) ml/h respectively. The length
of the nanofibers reached to several microns.