ZnO/ZnAl2O4 Nanocomposite Films Studied by X-Ray Diffraction, FTIR, and X-Ray Photoelectron Spectroscopy
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Date
2015-04-06
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Abstract
ZnO/ZnAl2O4 nanocomposite films were synthesised by ultrasonic spray pyrolysis (USP) by extracting Al2O(SO4)2 oxide with
zinc chloride hydrate in deionised water. The sample was then subjected to heat treatment at 650∘C and 700∘C for 1 h, which led
to the formation of the spinel oxide (ZnAl2O4) and wurtzite (ZnO) phases. Al2(SO4)3⋅18H2O salt was transformed into aluminum
oxide sulfate Al
2O(SO4)2, which is an intermediary decomposition product, by calcination at 795∘C for 3 h. The structures of the
synthesised ZnO/ZnAl2O4 films were confirmed by XRD, FTIR, and X-ray photoelectron spectroscopy (XPS). XPS spectra of the
major Zn, Al, and O photoelectron lines and the major X-ray induced Zn LMM Auger lines for ZnO/ZnAl2O4 are presented.