Journal of Inorganic Materials ›› 2011, Vol. 26 ›› Issue (1): 78-84.DOI: 10.3724/SP.J.1077.2011.00078

• Research Paper • Previous Articles     Next Articles

Filling TiO2Nanotubes with Biological Apatite by Alternative Loop Immersion Method

YU Jia,XIAO Xiu-Feng, LIANG Jian-He,LIU Rong-Fang, WANG Chun-Yan,MAO Dan   

  1. College ofChemistry and Materials Science, Fujian Normal University, Fuzhou 350007, China
  • Received:2010-07-14 Revised:2010-09-08 Published:2011-01-20 Online:2010-12-23
  • Supported by:

    NationalNatural Science Foundation of China (50970887, 30600149); Research Foundationfrom Ministry of Health of China (WKJ 2008-02-037); Research Foundation fromMinistry of China (209061); Science Foundation from Laboratory of Nanomaterialsof Fujian Province (NM10-03)

Abstract: A vertically aligned TiO2 nanotube array was fabricated on the surfaceof titanium substrate in fluoride-containing electrolyes by anodization. Alternative Loop Immersion Method(ALIM) was investigated to fill TiO2 nanotubes with the biologicalapatite in the saturated solution of Ca(OH)2 and 0.02 mol/L (NH4)2HPO4.In this way, the structure of the apatite-coating on the Ti substrate waschanged for solving the problem of coating shedding well. And the amount ofsynthetic apatite formed by ALIM was quantified according to key tubeproperties such as the tube diameter, the layer thickness, the crystalstructure (amorphous or anatase), <>etc. The effect of filling biologicalapatite of TiO2 nanotubes fabricated in glycerol-based electrolyteat 60V is the best. And the rate of inducing biological apatite on amorphous TiO2nanotubes with the treatment of ALIM is better than that of anatase TiO2nanotubes. Mineralization <>in vitro experiments indicates that TiO2nanotubes after ALIM treatment promote natural apatite formation significantlyin a simulated body fluid (SBF). Such TiO2 nanotube arrays with ALIMtreatment, are useful as a well-adhered bioactive surface layer on Ti implantmetals for orthopaedic and dental implants.

Key words: TiO2nanotubes, ALIM, fill, biological apatite

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