Fabrication and properties of biodegradable ZnO nano-rods/porous Zn scaffolds

被引：17
|
作者：
Zhao, Lichen [1 ]
Xie, Yu [1 ]
Zhang, Zhe [1 ]
Wang, Xin [1 ]
Qi, Yumin [1 ]
Wang, Tiebao [1 ]
Wang, Ru [1 ]
Cui, Chunxiang [1 ]
机构：
[1] Hebei Univ Technol, Sch Mat Sci & Engn, Key Lab New Type Funct Mat Hebei Prov, Tianjin 300130, Peoples R China
来源：
MATERIALS CHARACTERIZATION | 2018年 / 144卷
关键词：
Porous Zn scaffold; Zinc oxide (ZnO); Nanorods; Biodegradability; Antibacterial activity; ELECTROCHEMICAL CORROSION BEHAVIOR; IN-VITRO DEGRADATION; ANTIBACTERIAL ACTIVITY; NACL SOLUTION; ZINC-OXIDE; MECHANICAL-PROPERTIES; IMPLANT APPLICATIONS; ZN-3MG ALLOY; MG ALLOYS; SN ALLOYS;
D O I：
10.1016/j.matchar.2018.07.023
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Biodegradable ZnO nano-rods/porous Zn scaffolds were successfully fabricated by treating the porous Zn scaffolds in NaCl solution at 80 degrees C. X-ray diffraction (XRD) analysis shows that the nano-rods in situ fabricated on the porous Zn scaffolds in NaCl solution are hexagonal ZnO phase. This result is also confirmed by the image of high resolution transmission electron microscope (HRTEM) and the analysis of X-ray photoelectron spectroscopy (XPS). Compressive tests suggest that the compressive mechanical properties of the ZnO nano-rods/porous zinc scaffolds do not decrease significantly compared with that of the porous Zn scaffolds without treating in NaCl solution. Immersion tests in simulated body fluid (SBF) show that the ZnO nano-rods/porous zinc scaffolds slightly gain in weight after 16 days of immersion. Moreover, these ZnO nano-rods/porous zinc scaffolds can efficiently induce Ca-P precipitation during immersion tests and show a good bioactivity. In addition, antibacterial tests imply that the ZnO nano-rods/porous zinc scaffolds have an excellent antibacterial ability against Escherichia coli and Staphylococcus aureus. However, the results of cytotoxicity tests of ZnO nano-rods/porous Zn scaffolds are not satisfactory.
引用
收藏
页码：227 / 238
页数：12
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