1 School of Materials Science and Engineering, Hanoi University of Science and Technology (HUST), 01 Dai Co Viet, Hanoi 100000, Vietnam
2 Laboratory of Biomedical Materials, Hanoi University of Science and Technology (HUST), 01 Dai Co Viet, Hanoi 100000, Vietnam
3 Department of Environmental Engineering, Faculty of Physics and Chemical Engineering, Le Quy Don Technical University, 236 Hoang Quoc Viet Road, Hanoi 100000, Vietnam
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Author to whom correspondence should be addressed.
Materials 2024, 17(13), 3347; https://doi.org/10.3390/ma17133347
Submission received: 24 April 2024 / Revised: 29 May 2024 / Accepted: 3 June 2024 / Published: 6 July 2024
Abstract
This paper reports on the coating of heterostructured TiO2 nanopores/nanotubes on Ti substrates by anodizing at high voltages to design surfaces for biomedical implants. As the anodized voltage from 50 V to 350 V was applied, the microstructure of the coating shifted from regular TiO2 nanotubes to heterostructured TiO2 nanopores/nanotubes. In addition, the dimension of the heterostructured TiO2 nanopores/nanotubes was a function of voltage. The electrochemical characteristics of TiO2 nanotubes and heterostructured TiO2 nanopores/nanotubes were evaluated in simulated body fluid (SBF) solution. The creation of heterostructured TiO2 nanopores/nanotubes on Ti substrates resulted in a significant increase in BHK cell attachment compared to that of the Ti substrates and the TiO2 nanotubes.
Keywords: biomaterials; corrosion rate; anodizing; cell attachment
