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Wet Powder Processing of Sol–Gel Derived Mesoporous Silica-Hydroxyapatite Hybrid Powders

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This paper describes a method by which a porous silica coating layer can be obtained on different apatite particles through a simple sol–gel synthesis route. Sol–gel derived powders of hydroxyapatite (HAP)and beta tricalciumphosphate (β-TCP)were coated with a mesoporous silica using C16TAB (hexadecyltrimethylammonium bromide)as a template in order to induce mesophase formation. Further calcination of the material removes the template from the mesophase and leaves a highly ordered hexagonal arranged mesoporous silica structure with a core of HAP/β-TCP. The phase purity of the SiO2/apatite composites has been thoroughly investigated by the means of FT-IR, XRD, and solid state 31P MAS NMR. The phase purity of these materials is shown to be dependent on the solubility properties of the used apatites. The hybrid materials are suitable as a multifunctional biomaterial where osteoconductive properties can be combined with drug delivery.
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Document Type: Research Article

Publication date: 2006-08-01

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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