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Photodegradation of textile-azo dye by TiO2 nanotube arrays

The aim of this work is to photodegrade the textile Azo dye by TiO2 nanotubes (NTs) arrays. Highly aligned TiO2 NTs have been fabricated by using a self organized anodic oxidation method with ammonia fluorinated and ethylene glycol based electrolyte. The surface morphology has been confirmed by scanning electron microscopy (SEM). The NTs are grown uniformly on Ti susbtrate with inner diameter of 100 nm, outer diameter of 150 nm, and wall thickness of 25 nm. The chemical purity is investigated by photo luminance spectrophotometer. The structural property can be measured by X-ray diffractometer (XRD). As-deposited TiO2 NTs shows very high crystallinity with less oxygen vacancy, which can be suitable for the application of photodegradation of textile azo dye. The structural, optical and surface morphological properties of TiO2 NTs have been correlated and discussed with the applications of photodegradation of textile dyes.