Electrospun Nanofibers prepared with CdTe QDs, CdTeSe QDs and CdTe/CdS Core-shell QDs

Year 2018, Volume: 14 Issue: 1, 119 - 124, 30.03.2018

Canan Başlak Özcan Köysüren Mahmut Kuş

https://doi.org/10.18466/cbayarfbe.373679

Abstract

In
this study, a novel method is used to prepare water-soluble CdTe, CdTeSe
quantum dots (QDS) and CdTe/CdS core-shell QDs by using Te, Se, NaBH₄,
and CdCl₂ as precursors. Electrospinning method is used to obtain
polyvinyl alcohol (PVA)/QDs composite nanofibers. A series of PVA/QDs nanofiber
mats with three different QDs content are prepared. Transmission electron
microscopy (TEM) and X-ray powder diffraction (XRD) have been used to
characterize QD nanoparticles. In addition, for characterization of the
composite nanofibers, scanning electron microscopy (SEM) and atomic force
microscopy (AFM) have been used. QDs have a good dispersed crystalline
structure with an average crystalline size between 2-4 nm. Morphology analyses reveal that the composite
nanofibers with an average diameter ranging from 50 to 250 nm are prepared
using the electrospinning technique.

Keywords

CdTe Quantum Dots; Polyvinyl Alcohol; Nanofibers; Electrospinning

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