A comparative study of carbonate bands from nanocrystalline carbonated hydroxyapatites using FT-IR spectroscopy in the transmission and photoacoustic modes

被引：46
作者：
Kaflak, A. [1 ]
Slosarczyk, A. [2 ]
Kolodziejski, W.
机构：
[1] Med Univ Warsaw, Fac Pharm, Dept Inorgan & Analyt Chem, PL-02097 Warsaw, Poland
[2] AGH Univ Sci & Technol, PL-30059 Krakow, Poland
来源：
JOURNAL OF MOLECULAR STRUCTURE | 2011年 / 997卷 / 1-3期
关键词：
Apatite; Carbonates; IR spectroscopy; Photoacoustic spectroscopy; Band assignment; TRANSFORM INFRARED-SPECTROSCOPY; HUMAN DENTIN SURFACES; X-RAY-DIFFRACTION; CALCIUM-PHOSPHATE; CHEMICAL MODIFICATIONS; THERMAL-DECOMPOSITION; HYDROXYL-GROUPS; EARLY DEPOSITS; SOLID-PHASE; H-1; MAS;
D O I：
10.1016/j.molstruc.2011.04.013
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Nanocrystalline carbonated calcium hydroxyapatites (CHA) of the mixed type AB, containing ca. 1 wt.% of the A-type carbonates (substituted for OH-) and ca. 5-8 wt.% of the B-type carbonates (substituted for PO43-), were studied using the IR spectroscopy in the transmission (TRANS) and photoacoustic (PAS) modes. The respective nu(2) and nu(3) carbonate spectral regions were examined and the TRANS and PAS bands were assigned and compared. For the first time, different A-carbonate configurations, A1 and A2, have been discovered in nanocrystalline CHA. New bands were found at 1387 and 884 cm(-1) and assigned to carbonate ions in aqueous compartments (adsorbed water and/or water trapped in crystal grains) and located on the crystal surface, respectively. The comparison of the TRANS and PAS IR spectra provides valuable information on distribution of carbonate ions in the apatite crystal lattice and their separation between the crystal interior and the crystal surface. (C) 2011 Elsevier B.V. All rights reserved.
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页码：7 / 14
页数：8
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