Effects of the Nano-Tubular Anodic TiO2 Buffer Layer on Bioactive Hydroxyapatite Coating

Department of Nano Materials Engineering and BK 21 Nano Fusion Technology Division, Pusan National University, Miryang 627-706, Korea.
Journal of Nanoscience and Nanotechnology (Impact Factor: 1.56). 01/2011; 11(1):286-90. DOI: 10.1166/jnn.2011.3270
Source: PubMed


We studied the effect of nano-tubular anodic TiO2 buffer layers on hydroxyapatite (HA) coating. The pulsed laser deposition (PLD) method was used to deposit HA on a well arranged nano-tubular anodic TiO2 (NT-ATO) buffer layer prepared by an electrochemical anodization technique. The surface morphology and chemical composition of HA coatings were characterized by using scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD), and contact angle measurement. We found that crystalline HA coatings show well arranged porous morphologies with a favorable surface wettability. We also found that an anodic nano-tubular TiO2 buffer layer with a relatively short tube length shows a better coating morphology. The deposition process of HA on the nanotubular TiO2 buffer layer was also proposed.

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