Shao Yi, Jiang Yue, Wang Yongfeng, Dong Qiangsheng, Wang Cheng, Wang Yan, Xue Feng, Chu Chenglin, Bai Jing
Jiangsu Key Laboratory for Advanced Metallic Materials, School of Materials Science and Engineering, Southeast University, Nanjing 211189, China.
Institute of Biomedical Devices (Suzhou), Southeast University, Suzhou 215163, China.
J Funct Biomater. 2025 Jan 9;16(1):19. doi: 10.3390/jfb16010019.
Antibacterial stainless steels have been widely used in biomedicine, food, and water treatment. However, the current antibacterial stainless steels face challenges in balancing corrosion resistance and antibacterial effectiveness, limiting their application range and lifespan. In this study, an oxide layer sealed with antibacterial Ag particles was constructed on the surface of 304 stainless steel through anodizing and electrodeposition, and the process parameters were optimized for achieving long-term antibacterial properties. The electrochemical tests demonstrated that the composite coating effectively enhanced the corrosion resistance of 304 stainless steel. The X-ray photoelectron spectroscopy analysis revealed the close binding mechanism between the Ag particles and the micropores in the oxide layer. Furthermore, the antibacterial stainless steel has an antibacterial rate of 99% against () and good biocompatibility. This study provides an effective approach for designing efficient, stable, and safe antibacterial stainless steel.
抗菌不锈钢已广泛应用于生物医学、食品和水处理领域。然而，目前的抗菌不锈钢在平衡耐腐蚀性和抗菌效果方面面临挑战，限制了其应用范围和使用寿命。在本研究中，通过阳极氧化和电沉积在304不锈钢表面构建了一种用抗菌银颗粒密封的氧化层，并对工艺参数进行了优化，以实现长期抗菌性能。电化学测试表明，复合涂层有效提高了304不锈钢的耐腐蚀性。X射线光电子能谱分析揭示了银颗粒与氧化层微孔之间的紧密结合机制。此外，该抗菌不锈钢对（）的抗菌率达99%，且具有良好的生物相容性。本研究为设计高效、稳定和安全的抗菌不锈钢提供了一种有效方法。
