Abstract Biocorrosion or microbially influenced corrosion is an important issue for galvanized steel structures and articles. Molybdenum incorporated TiO2 (Mo-TiO2) composite is first ever explored in the present study, as a chemical modifier due to its high antibacterial activity and long term stability against biocorrosion. It also facilitates good matrix formation. In the present work, high zone of inhibition and low bacterial survival percentage of the molybdenum incorporated TiO2 is achieved, which enhance antibacterial activity towards visible region. The biocidal effect, chemical stability and corrosion resistance of the composite coating in different systems are evaluated by various techniques, such as Electrochemical Impedance Spectroscopy and Potentiodynamic Polarization studies. The corrosion inhibition efficiency of the composite incorporated zinc coating is very high even after long exposure in different aggressive media. The developed composite incorporated coating yields an efficient and sustained control on biocorrosion on zinc coatings. This methodology avoids usage of conventional inconsistent chemical based methods such as paintings and other methods for long standing protection of such big galvanized iron articles and structures.

中文翻译：

---

探索含钼的 TiO2 复合材料对锌涂层的持续生物腐蚀控制

摘要 生物腐蚀或微生物腐蚀是镀锌钢结构和制品的一个重要问题。本研究首次探索了掺钼的 TiO2（Mo-TiO2）复合材料作为化学改性剂，因为它具有高抗菌活性和长期抗生物腐蚀稳定性。它还有助于良好的基质形成。在目前的工作中，钼掺入的 TiO2 实现了高抑菌圈和低细菌存活率，从而增强了对可见光区域的抗菌活性。复合涂层在不同系统中的杀菌效果、化学稳定性和耐腐蚀性能通过各种技术进行评估，例如电化学阻抗谱和动电位极化研究。即使长时间暴露在不同的腐蚀性介质中，复合锌涂层的腐蚀抑制效率也非常高。开发的复合涂层可以有效和持续地控制锌涂层的生物腐蚀。这种方法避免了使用传统的不一致的基于化学的方法，例如绘画和其他方法来长期保护这种大型镀锌铁制品和结构。