Journal
COLLOIDS AND SURFACES B-BIOINTERFACES
Volume 76, Issue 1, Pages 117-122Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.colsurfb.2009.10.023
Keywords
TiO2 nanotube; Superhydrophilic-superhydrophobic; Micropatterned template; Electrochemical deposition; Octacalcium phosphate (OCP)
Funding
- National Nature Science Foundation of China [20773100, 20620130427]
- National Basic Research Program of China [2007CB935603]
- R&D of Fujian and Xiamen [2007H0031, 3502Z20073004]
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Using a patterned superhydrophobicity/superhydrophilicity template, micropatterned octacalcium phosphate (OCP) has been Successfully fabricated on TiO2 nanotube array Surface. The resultant OCP micropattern has been characterized with scanning electron microscopy, optical microscopy, X-ray diffraction and electron probe microanalyzer. It is shown that the ribbon-like OCP crystals possess a highly ordered and hierarchically porous structure at nano-micro-scales. They can be selectively grown at superhydrophilic areas which are confined by the hydrophobic regions. The high wetting contrast template proves to be useful for constructing well-defined dual scale OCP film with porous structure biomimic to natural bone. A mechanism has been proposed to explain the formation of the OCP patterned film with hierarchically porous structure and distinct selectivity. (C) 2009 Elsevier B.V. All rights reserved.
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