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Two-Level Micro-to-Nanoscale Hierarchical TiO2 Nanolayers on Titanium Surface

Institute of Chemistry, Saint Petersburg State University, Universitetskii pr.26, St. Petersburg 198504, Russia
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Academic Editor: Aldo R. Boccaccini
Materials 2016, 9(12), 1010; https://doi.org/10.3390/ma9121010
Received: 5 October 2016 / Revised: 29 November 2016 / Accepted: 6 December 2016 / Published: 13 December 2016
(This article belongs to the Section Biomaterials)
Joint replacement is being actively developed within modern orthopedics. One novel material providing fast implantation is bioactive coatings. The synthesis of targeted nanocoatings on metallic nanotitanium surface is reported in this paper. TiO2-based micro- and nanocoatings were produced by sol-gel synthesis using dip-coating technology with subsequent fast (shock) drying in hot plate mode at 400 °C. As a result of shock drying, the two-level hierarchical TiO2 nanolayer on the nanotitanium was obtained. This two-level hierarchy includes nanorelief of porous xerogel and microrelief of the micron-sized “defect” network (a crack network). The thickness of TiO2 nanolayers was controlled by repeating dip-coating process the necessary number of times after the first layer deposition. The state of the MS3T3-E1 osteoblast cell line (young cells that form bone tissue) on the two-level hierarchical surface has been studied. Particularly, adhesion character, adhesion time and morphology have been studied. The reported results may serve the starting point for the development of novel bioactive coatings for bone and teeth implants. View Full-Text
Keywords: sol-gel; dip coating; TiO2 nanolayers; shock drying; roughness; cracks; cell state; osteoblasts sol-gel; dip coating; TiO2 nanolayers; shock drying; roughness; cracks; cell state; osteoblasts
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Zemtsova, E.G.; Arbenin, A.Y.; Valiev, R.Z.; Orekhov, E.V.; Semenov, V.G.; Smirnov, V.M. Two-Level Micro-to-Nanoscale Hierarchical TiO2 Nanolayers on Titanium Surface. Materials 2016, 9, 1010.

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