CeO2–TiO2 mixed oxide incorporated high performance hot dip zinc coating

Development of Antibacterial V/TiO2-Based Galvanic Coatings for Combating Biocorrosion

“…In this context, the present work aims to develop environment-friendly coatings with long durability, enhanced electrochemical properties, and long-term stability against biocorrosion. Zinc coating is widely applied as a metallic coating for corrosion prevention on mild steel substrates. , Due to high strength, formability, recyclability, long-term stability, and high anti-corrosion performance, hot-dip galvanized zinc coating is extensively used in all industrial and marine fields. , The superior anticorrosion performance and long-term stability of the zinc coating are due to the three-fold protective nature. , When the zinc coating has some defects and pores formed on its surface, then the coating acts as a sacrificial anode. , Modification of the zinc bath by alloying elements significantly affects the kinetics, surface morphology, and coating growth. , The presence of metal oxides such as ZrO 2 , Al 2 O 3 , TiO 2 , WO 3 , and CeO 2 in the zinc bath causes the formation of an oxide barrier coating and thereby enhances the anticorrosion performance of the interior layer of the coating. − ,− The main limitation of the zinc coating in the aquatic and marine environments is the bacterial adhesion and biofilm proliferation on the surface which enhance the anodic dissolution of the coating . Therefore, a coating with high antibacterial activity should inhibit bacterial adhesion and biofilm proliferation on the surface …”

“…The incorporation of some metal oxides such as TiO 2 and CeO 2 into the zinc coating enhances the anti-biofouling properties of the coating. ,, Among various metal oxides, TiO 2 has drawn much more attention in current emerging research areas such as solar energy conversion and environmental application due to its high chemical stability, nontoxicity, wettability, and notable photocatalytic ability to remove environmental pollutants. , The antibacterial activity of TiO 2 under visible light irradiation is of significant interest for water treatment . However, the photocatalytic and antibacterial activities of TiO 2 nanoparticles are still relatively small because of their large band gap (3.2 eV). ,− Doping with metals or nonmetals into the TiO 2 lattice is an effective method for improving the photocatalytic and antibacterial ability of TiO 2 under visible light irradiation by shifting the absorption peak from UV to the visible region. , However, the transition-metal-doped TiO 2 has high photocatalytic and antibacterial activity in the visible light region.…”

“…1−3,13−15 The main limitation of the zinc coating in the aquatic and marine environments is the bacterial adhesion and biofilm proliferation on the surface which enhance the anodic dissolution of the coating. 15 Therefore, a coating with high antibacterial activity should inhibit bacterial adhesion and biofilm proliferation on the surface. 15 The incorporation of some metal oxides such as TiO 2 and CeO 2 into the zinc coating enhances the anti-biofouling properties of the coating.…”

“…15 Therefore, a coating with high antibacterial activity should inhibit bacterial adhesion and biofilm proliferation on the surface. 15 The incorporation of some metal oxides such as TiO 2 and CeO 2 into the zinc coating enhances the anti-biofouling properties of the coating. 1,2,15 Among various metal oxides, TiO 2 has drawn much more attention in current emerging research areas such as solar energy conversion and environmental application due to its high chemical stability, nontoxicity, wettability, and notable photocatalytic ability to remove environmental pollutants.…”

“…15 The incorporation of some metal oxides such as TiO 2 and CeO 2 into the zinc coating enhances the anti-biofouling properties of the coating. 1,2,15 Among various metal oxides, TiO 2 has drawn much more attention in current emerging research areas such as solar energy conversion and environmental application due to its high chemical stability, nontoxicity, wettability, and notable photocatalytic ability to remove environmental pollutants. 16,17 The antibacterial activity of TiO 2 under visible light irradiation is of significant interest for water treatment.…”