Schematic illustration of the formation of ZnO-TiO2/Clay photocatalysts. Highlights  ZnO-TiO2/Clay photocatalyst prepared using natural clay  ZnO-TiO2/Clay shows higher activity than TiO2/Clay in methyl green degradation  ZnO has a promoting effect on photocatalytic activity  Almost omplete mineralization upon 30 min UVA irradiation

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. Photocatalytic decolorization of cationic and anionic dyes over ZnO nanoparticle immobilized on natural Tunisian clay. Applied Clay Science, Elsevier, 2018Elsevier, , 152, pp.148 -157. 10.1016Elsevier, /j.clay.2017 In the present work we describe a simple and low-cost method for the decolorization of textile 23 dyeing and printing wastewaters, using ZnO as photocatalyst supported on natural Tunisian clay 24 (ZnO/Clay). This composite ZnO/Clay material was synthesized through a sol-gel method. X-25 ray diffraction (

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