The use of high concentration of zinc acetate solution for synthesis of Al2O3-ZnO nanocomposite and it,s application for dye removal

Document Type : Original Article

Authors

1 Department of Chemistry, Najafabad Branch, Islamic Azad University, Najafabad, Iran

2 Department of chemistry, Advanced Materials Research Center,Najafabad Branch Islamic Azad university

3 Department of Chemistry, Najafabad Branch, Islamic Azad University, Najafabad, Iran

Abstract

Nanocomposites have been emerged a lot of research in recent years in various fields of science due to their different and new properties compared to their constituent raw materials. Use the adsorption activity of some semiconductors for industrial wastewater is very important. In this study, two-component composite Al2O3-ZnO was prepared by coprecipitation method using zinc acetate and aluminum hydroxide. The synthesized nanocomposites were characterized by X-ray diffraction analysis (XRD), field emission scanning electron microscope (FESEM) and FTIR analysis to investigate the microstructure, morphology and the chemical bonds of the synthesized composite, respectively. Aluminum oxide does not crystallize completely because 550 ° C does not provide the activation energy required for this process. The obtained results showed that by increasing the percentage of ZnO in nanocomposite, morphology of the composite changed from plate to agglomerates. The highest methyl orange removal (98%) was obtained in optimized condition pH=5, 0.03g of adsorbent and 10 ppm of dye for nanocomposite 20Al2O3-80ZnO.

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