氧化锌纳米棒阵列涂层的制备及其抗菌性能研究

采用水热法在锌片表面成功制备了三种不同长径比的氧化锌纳米棒阵列涂层，通过X射线粉末衍射，扫描电子显微镜和接触角测量仪对涂层的组成、形貌和润湿性进行了表征，研究了涂层对表面黏附的金黄色葡萄球菌的抗菌性能，并探讨了纳米棒阵列的长径比和表面润湿性对抗菌性能的影响. 结果表明，所制备的氧化锌纳米棒阵列涂层对金黄色葡萄球菌表现出良好的抗菌效果，随着氧化锌纳米棒的长径比增加，涂层表面黏附的死细菌逐渐增多，这可能是由于涂层的亲水性提高而使锌离子在表面扩散速率增加导致的.

Preparation of ZnO Nanorod Array Coating and Its Antibacterial Property

?ZnO nanorod array coatings with three different aspect ratios were prepared on the surface of zinc plate via a hydrothermal method. The structure, morphology and surface wettability of the coatings were characterized by X-ray powder diffraction, scanning electronic microscopy, and optical contact angle meter. The antibacterial property of the ZnO coating against staphylococcus aureus was studied, and the effects of surface wettability and aspect ratio of nanorod on antibacterial properties were also discussed. The results show that the as-prepared ZnO nanorod array coatings have good antibacterial effect against staphylococcus aureus. With the increase of aspect ratio of ZnO nanorod, the amount of the dead bacteria adhered on the coating increases, probably due to the increase of surface diffusion rate of zinc ions caused by enhancement of hydrophilicity.