In this study, Zinc Oxide (ZnO)–Cadmium Oxide (CdO) nanocomposite has been synthesized by reverse microemulsion method and used as adsorbent to remove methyl blue from aqueous solution. The synthesized products were studied by X-ray diffraction, Brunauer–Emmett–Teller surface area analysis, thermogravimetric and differential thermal analysis and transmission electron microscopy. The effect of parameters, including adsorbent dosage, contact time, methyl blue concentration and ZnO/CdO weight ratio on the adsorption properties were investigated. The results showed that the ZnO–CdO composites have a nearly spherical shape with a size of tens of nanometers and exhibit the surface area of 9.5 m2/g. The synthesized products showed excellent performance for fast and efficient removal of dye contaminant, methyl blue, in aqueous solution.
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