Synthesis and characterization of nanoporous hydroxyapatite using cationic surfactants as templates

Journal Article · Mon Aug 04 00:00:00 EDT 2008 · Materials Research Bulletin

OSTI ID:21144093

Yanbao, Li; Tjandra, Wiliana ^[1]

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1. Singapore-MIT Alliance, School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798 (Singapore)

Nanoporous hydroxyapatite was synthesized utilizing cationic surfactants as templates. The effects of cetyltrimethylammonium bromide and reaction temperatures on the phase and morphology of HA were investigated by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and transmission electron microscopy (TEM). The thermal stability of nanoporous structures was studied by XRD and thermal analyzers (TGA/DTA), while the pore structure of HA was observed using high resolution TEM. It was found that the pore size was about 1 nm, and the pore structure of HA was thermally stable up to 700 deg. C and the pore size did not change with reaction temperature and CTAB:PO{sub 4}{sup 3-} ratio. The possible formation mechanism of nanoporous structure was proposed.

• OSTI ID: 21144093
• Journal Information: Materials Research Bulletin, Vol. 43, Issue 8-9; Other Information: DOI: 10.1016/j.materresbull.2007.08.008; PII: S0025-5408(07)00358-3; Copyright (c) 2007 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
APATITES
BROMIDES
DIFFERENTIAL THERMAL ANALYSIS
FOURIER TRANSFORM SPECTROMETERS
FOURIER TRANSFORMATION
INFRARED SPECTRA
MORPHOLOGY
NANOSTRUCTURES
PHASE DIAGRAMS
PHOSPHATES
PORE STRUCTURE
SURFACTANTS
SYNTHESIS
THERMAL GRAVIMETRIC ANALYSIS
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION