期刊
SURFACE & COATINGS TECHNOLOGY
卷 360, 期 -, 页码 181-195出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.surfcoat.2018.12.119
关键词
Mixed oxide nanotubes; Graphene oxide; Silver nanoparticles; Antibacterial activity; MTT and ALP assay; Ti6Al7Nb
资金
- University of Manitoba
- University of Malaya [PG130-2015B]
- UMRG [RP042B-17AET]
- Amirkabir University of Technology
The self-ordered architecture allows for the exact design and control of geometrical features, to achieve materials with unique properties. For this reason, mixed oxide nanotube arrays have been highly regarded by the scientific community in recent years. In the present study, a hybrid approach of an optimized physical vapor deposition magnetron sputtering (PVDMS), electrochemical anodization as well as spin coating is proposed to improve the mechanical properties, corrosion resistance, antibacterial and osteoblast cytocompatibility performance of Ti6Al7Nb implant (Ti67IMP). Accordingly, controlled decorations of mixed oxide nanotube with silver nanoparticles/graphene oxide (AgNPs/GO) were designed to assess the biofunctionality of the modified Ti6Al7Nb implant. The results show that the surface modification has dramatically reduced the viability of Escherlchia colt (E. coli) and Staphylococcus aureus (S. aureus) cells. Besides, the AgNPs/GO loaded mixed oxide nanotube has significantly promoted cell adhesion and spreading, compared to the bare substrate. The proposed hybrid approach can also be extended to fabricate highly complex nanoarchitectures with controlled shape and biofunctionality for various orthopedic applications.
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