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MICROSTRUCTURAL AND OPTICAL PROPERTIES OF NANO-SIZED ZNO/ZNAL2O4 MIXED METAL OXIDES PREPARED BY THERMAL TREATMENT APPROACH

[ 31 Dec 2019 | vol. 12 | no.12 | pp. 33-38]

About Authors:

Ethar Yahya Salih1, Musaab K. Rashed2* and Wisam Ismael Tayyh Al-Nuaimi32
-1NanoMicro Engineering Laboratory, Department of Mechanical Engineering, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia
-2,3Department of Mechanical Techniques, Institute of Technology, Middle Technical University, Baghdad, Iraq

Abstract:

This article reports the synthesis of Zn/ZnAl2O4 as a thin film-based Zn/Al-NO3 layered double hydroxide (Zn/Al-LDH) through combination of thermal treatment and co-precipitation methods. The prepared thin film of Zn/Al-LDH underwent calcination in furnace with 450 oC to obtain the Zn/ZnAl2O4 thin film in mixed metal oxides (MMO) form and remove organic compounds. The structural studies of both Zn/Al-LDH and Zn/ZnAl2O4 thin films have been carried out using XRD. The XRD spectra showed that the formation of crystalline structure of the prepared samples. The optical properties were investigated using a UV–Vis spectrophotometer and luminescence spectrometer, which showed band gap of 3.2. These results prove that, the modified coprecipitation and thermal treatment methods are simple and cost-effective techniques that can produce quite pure MMO thin film with no additional processes or chemicals needed.