Synthesis of Heterostructured TiO2 Nanopores/Nanotubes by Anodizing at High Voltages

Ta Quoc Tuan; Le Van Toan; Vuong-Hung Pham

doi:10.3390/ma17133347

Synthesis of Heterostructured TiO₂ Nanopores/Nanotubes by Anodizing at High Voltages

Materials (Basel). 2024 Jul 6;17(13):3347. doi: 10.3390/ma17133347.

Authors

Ta Quoc Tuan^{1

2}, Le Van Toan^{1

3}, Vuong-Hung Pham^{1

2}

Affiliations

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.

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: anodizing; biomaterials; cell attachment; corrosion rate.

Grants and funding

CT2022.03.BKA.06/Ministry of Education and Training (MOET)