Titania and titania-silver nanocomposite coatings grown by electrophoretic deposition from aqueous suspensions

Santillan MJ, Quaranta NE, Boccaccini AR (2010)

Publication Type: Journal article

Publication year: 2010

Journal

Surface & Coatings Technology Elsevier

Publisher: Elsevier

Pages Range: 2562-2571

Journal Issue: 205

DOI: 10.1016/j.surfcoat.2010.10.001

Abstract

This study focused on the synthesis of titania-silver (TiO2-Ag) nanocomposite coatings with potential enhanced antibacterial properties for applications in orthopedic implants. Ag nanoparticles (4nm) were grown directly on the surface of commercially available TiO2 nanoparticles (23nm) by nucleophilic reaction. The electrophoretic deposition (EPD) of TiO2 and TiO2-Ag nanoparticles on titanium substrates using aqueous suspensions was investigated. Best results were achieved by using water and ethanol as co-solvents. The EPD process (voltage: 3V, deposition time: 90s) led to TiO2 based coatings on titanium substrates exhibiting homogeneous and uniform microstructure. In vitro bioactivity tests in Kokubo's simulated body fluid (SBF) to evaluate the formation of hydroxyapatite (HA) on the coating surface were performed. The results showed that the extent of HA formation rapidly increased with increasing time in SBF and it decreased as silver amount in the coating increased. XRD, TEM and SEM-EDAX were used to investigate the microstructure of the nanomaterials and coatings. The high bioactivity of the TiO2 based electrophoretic coatings indicates their potential for use as bioactive antibacterial layers in orthopedic implants. © 2010 Elsevier B.V.

Authors with CRIS profile

Aldo Boccaccini Lehrstuhl für Werkstoffwissenschaften (Biomaterialien)

Involved external institutions

Universidad Nacional de Cuyo

Argentina (AR) Universidad Tecnológica Nacional (UTN) / National Technological University

Argentina (AR)

How to cite

APA:

Santillan, M.J., Quaranta, N.E., & Boccaccini, A.R. (2010). Titania and titania-silver nanocomposite coatings grown by electrophoretic deposition from aqueous suspensions. Surface & Coatings Technology, 205, 2562-2571. https://doi.org/10.1016/j.surfcoat.2010.10.001

MLA:

Santillan, M. J., N. E. Quaranta, and Aldo R. Boccaccini. "Titania and titania-silver nanocomposite coatings grown by electrophoretic deposition from aqueous suspensions." Surface & Coatings Technology 205 (2010): 2562-2571.

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