Abstract
The aim of this article is to study the photodegradation, anticorrosion, antibacterial and antifungal properties of doped titanate nanotubes prepared by hydrothermal treatment using different metals: Ce, Fe, Zn and Zr. The main purpose of this work is to prove the possibility of using these nanotubes as a coating for surfaces capable of protecting these surfaces against corrosion, degrading the molecules adsorbed at their surfaces as well as eliminating any bacteria or fungi that can attack these surfaces. The textural and morphological properties of the nanopowders were determined by different analysis techniques such as: X-ray diffraction, reflection diffuse spectroscopy, thermogravimetric analysis, adsorption-desorption of N-2, Infrared spectroscopy and Raman spectroscopy. The results of the characterizations showed that nanotubes can be obtained with a hollow structure and an important thermal stability of whatever element nature. However, the photocatalytic test ends with the photodegradation under UV-Visible irradiation of the three industrial molecules: Malachite Green, Methyl Orange and Tannic Acid having different molecule charges. It was noted that the degradation rates of the order of 100% were obtained in fairly short times. However, the studied materials show an inhibitory power of fungi, bacteria and high anticorrosion activities in acid medium.