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通过阳极氧化及水热技术制备了掺Zn的纳米管层。采用用场发射扫描电镜、XRD衍射图谱分析了水热前后纳米管的形貌及结构特征,采用划痕法评价了纳米管的结合强度,并评价了掺Zn的纳米管膜层对S.aureus ATCC 25923的抗菌性。结果表明,阳极氧化TiO2纳米管由非晶构成;水热处理后,纳米管的物相以Zn2Ti3O8为主;随着水热时乙酸锌浓度的增加,膜层中Zn的含量缓慢增加,纳米管的管壁厚度逐渐降低,纳米管内径变化不明显,纳米管层的临界载荷稍有降低。掺Zn纳米管形成机制符合溶解-再结晶机制。掺Zn的纳米管膜层对S.aureus ATCC 25923具有很好的抗菌性。
Zn-doped nanotube layers were prepared by anodization and hydrothermal techniques. The morphologies and structures of the nanotubes before and after hydrothermal treatment were characterized by field emission scanning electron microscopy (SEM) and X-ray diffraction (XRD). The bonding strength of the nanotubes was evaluated by scratching method. 25923 antibacterial. The results showed that anodized TiO2 nanotubes were composed of amorphous. After hydrothermal treatment, the phase of the nanotubes was mainly composed of Zn2Ti3O8. With the increase of zinc acetate concentration, the content of Zn in the film increased slowly, Wall thickness gradually decreased, the inner diameter of nanotubes did not change significantly, and the critical load of nanotube layer decreased slightly. The formation mechanism of Zn-doped nanotubes conforms to the dissolution-recrystallization mechanism. The Zn-doped nanotube film has good antibacterial activity against S.aureus ATCC 25923.