Chemical and Biomolecular Engineering Faculty Research

Title

Characterization of Tio 2--al 2 O 3 Composite Fibers Formed by Electrospinning a Sol--gel and Polymer Mixture

Document Type

Article

Publication Date

2-25-2010

Abstract

Composite fibers of TiO2–Al2O3 were prepared by electrospinning a sol–gel and polymer mixture to form template polymeric fibers followed by calcination. The resulting fibers were characterized using thermogravimetric analysis (TGA), X-ray diffraction (XRD), diffuse reflectance ultraviolet–visible (UV–vis) spectroscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray energy dispersive spectroscopy (XEDS), and X-ray photoelectron spectroscopy (XPS). Calcination at 973 K resulted in mixture of anatase (A) titania and gamma (γ) alumina phases. We calculated a band gap energy of 3.3 eV and found the average diameter of the resulting fibers in the 150–400 nm range. Both XEDS and XPS reveal that fibers are predominantly made of titania.

Publication Title

Materials Science and Engineering: B

Volume

167

Issue

1

First Page

55

Last Page

59