Synthesis of mesoporous hydroxyapatite using a modified hard-templating route

• Published in: Materials research bulletin Vol. 44; no. 8; pp. 1626 - 1629
• Main Authors: Xia, Zhiguo, Liao, Libing, Zhao, Senlin
• Format: Journal Article
• Language: English
• Published: United States Elsevier Ltd 05.08.2009
• Subjects: A. Microporous materials; ADSORPTION; APATITES; B. Chemical synthesis; CALCIUM; D. Microstructure; DESORPTION; FOURIER TRANSFORM SPECTROMETERS; Hydroxyapatite; ISOTHERMS; MATERIALS; MATERIALS SCIENCE; MICROSTRUCTURE; NANOSTRUCTURES; POLYCRYSTALS; RODS; SURFACE AREA; SYNTHESIS; TRANSMISSION ELECTRON MICROSCOPY; X-RAY DIFFRACTION; B. Chemical synthesis; D. Microstructure; A. Microporous materials; Hydroxyapatite
• ISSN: 0025-5408; 1873-4227
• DOI: 10.1016/j.materresbull.2009.04.014

Mesoporous polycrystals of hydroxyapatite-calcium are synthesized via a modified hard-templating route. The structure properties of hydroxyapatite-calcium are characterized by means of X-ray diffraction, Fourier transform infrared spectroscopy, transmission electron microscopy and N 2 adsorption–desorption isotherms. Wide-angle X-ray diffraction and Fourier transform infrared spectroscopy measurements reveal that the crystalline grains consist of highly crystalline pure hydroxyapatite phases. Transmission electron microscopy results show that rod-like hydroxyapatite-calcium grains with an average diameter of about 100 nm long and about 20 nm wide are uniformly distributed, which are also observed with an average pore size of 2–3 nm. Based on N 2 adsorption–desorption isotherms investigation, the pore size, surface area and pore volume of mesoporous hydroxyapatite-calcium are 2.73 nm, 42.43 m 2 g −1 and 0.12 cm 3 g −1, respectively.