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Advanced Oxidation Processes (O₃- and H₂O₂- assisted photocatalysis under Vis irradiation) were applied for the removal of recalcitrant pollutant from wastewater. The new periodically patterned carbon nanotube entitled cheetah skin structure introduced for the first time. The photocatalytic activity of cheetah skin CNT modified by poly (methyl methacrylate) (PMMA) and polyacrylonitrile (PAN) was tested in the decomposition of bisphenol A (BPA). The obtained CNT/PAN/PMMA composites differ in morphological structure. In PAN/CNT composite, a tubular coating was formed and a continuous coating layer of PAN on the surface of nanotubes was observed. In PAN/PMMA/CNT composite after carbonization process, the PMMA was completely evaporated and Carbon Nano Particles (CNP) with circular morphology in order of less than 10 nm were coated on the surface of nanotube walls forming a cheetah skin …