Cu-Doped Porous ZnO-ZnAl2O4 Nanocomposites Synthesized by Polymer-Salt Method for Photocatalytic Water Purification

In this work, the adsorption and photocatalytic properties of ZnO-ZnAl2O4-CuO nanosized porous composites synthesized by polymer-salt method have been studied. To evaluate efficiency adsorption, experiments were carried out on decolorization aqueous solutions Chicago Sky Blue diazo dye. The process is divided into two stages, at first stage, dye rapidly adsorbed outer surface composite particles (kf = 0.0073 min−1), second diffuses pores material 0.0007 min−1). It was noted that rate decomposition 0.021 min−1) higher than process, which indicates occurrence molecules both in liquid phase. With an increase light intensity, significantly accelerated, linearly low intensities, high intensities (I > 100 mW/cm2) dependence becomes a power law.