Fabrication of Nanofibers Core - Shell Oxide by One Step Electrospinning Method

Subject Areas :

حجت رفیعی پور ¹ , محمد رضا واعظی ² , اصغر کاظم زاده ³

1 - پژوهشگاه مواد و انرژی
2 - پژوهشگاه مواد وانرژی
3 - پژوهشگاه مواد و انرژی

Received: 2015-09-07 Accepted : 2015-10-05 Published : 2016-05-21

Keywords: Electrospinning, Core – Shell, Nanofibers, Tin Dioxide, Zinc Oxide,

Abstract :

In this paper, core - shell nanofibers were synthesized by single stage electrospinning. To achieve on this aim, a coaxial needle was used, and oxides precursor were solved in polyvinyl alcohol (PVA) solution, and injected by separate syringes which connected to one pump. Calcination was done on synthsised core – shell nanofibers. The morphology and microstructure of nanofibers were examined by field emission scanning electron microscope (FE-SEM), transmission electron microscopy (TEM) and energy-dispersive X-ray spectroscopy (EDS) and X-ray diffraction (XRD). The final structure is ZnO as shell and SnO2 as core. The core diameter and the shell thickness nanofiber from TEM image are approximately 45 nm and 25 nm, respectively. The average diameters of as-electrospun and calcined core - shell nanofibers are about 175 and 79 nm, respectively.

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