Synthetization of ZnO Nanostructured films prepared by Uncovered Hydrothermal Method for Textile Wastewater Cleaning Application

The novelty of this work is to photodegrade the Textile wastewater using ZnO nanostructured films. The ZnO nanostructured films (Top layer) have been synthesized on the ZnO seed layer by a simple uncovered hydrothermal method at 85°C for 2 hr, whereas the ZnO seed layer is grown on a glass substrate by spin coating method for 3000 rpm and 15s. The structural properties of both the Top and seed layers of ZnO films showed a wurtzite structure with good crystallinity. The prepared ZnO films have a good absorption edge and bandgap energy within the range of 3.1~3.37 eV. The scanning electron microscope images exhibited nanorods (NRs)-like shapes, which have enhanced surface area and are more photoactive. Moreover, the photodegrading performance of the ZnO NRs films (Top layer) is more efficient than the spin-coated seed layer sample.