Structural Changes of Bioapatite during Heat Treatment

被引：0
作者：
Dallos, Zsolt [1 ,2 ]
Golle-Leidreiter, Philipp [1 ,3 ]
Molnar, Zsombor [4 ,5 ]
Kristaly, Ferenc [6 ]
Kis, Viktoria Kovacs [7 ]
Dodony, Istvan [8 ]
机构：
[1] Tech Univ Darmstadt, Dept Mat & Geosci, D-64287 Darmstadt, Germany
[2] Johannes Gutenberg Univ Mainz, Dept Chem, D-55099 Mainz, Germany
[3] Glass & Mineral Mat, Fraunhofer ISC, D-97082 Wurzburg, Germany
[4] Univ Pannonia, Res Inst Biomol & Chem Engn, H-8200 Veszprem, Hungary
[5] Environm Mineral Res Grp, ELKH PE, H-8200 Veszprem, Hungary
[6] Univ Miskolc, Inst Mineral & Geol, H-3515 Miskolc, Hungary
[7] Eotvos Lorand Res Network, Ctr Energy Res, H-1121 Budapest, Hungary
[8] Eotvos Lorand Univ, Dept Mineral, H-1117 Budapest, Hungary
来源：
CRYSTAL GROWTH & DESIGN | 2024年 / 24卷 / 05期
关键词：
ELECTRON-DIFFRACTION TOMOGRAPHY; TEMPERATURE-RELATED CHANGES; NANOCRYSTALLINE APATITES; CRYSTAL-STRUCTURE; THERMAL-BEHAVIOR; BONE; HYDROXYAPATITE; CALCIUM; CARBONATE; CHEMISTRY;
D O I：
10.1021/acs.cgd.3c01375
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Bovine bones heated to 1100 degrees C under air atmosphere were studied using transmission electron microscopy. During heating, bone bioapatite was transformed into hydroxylapatite (HAp). Energy-dispersive spectroscopy did not indicate the presence of A-type CO3 substitution, it showed a near-ideal Ca/P ratio of 1.67 during heating. In the present study, the structure of the formed HAp was determined using automated electron diffraction tomography, a 3D electron diffraction method, space group P6(3) a = 9.42 & Aring; and c = 6.89 & Aring; at 700 degrees C. The position of the OH hydrogen sitting in the channel position was determined, confirming the lack of the mirror plane perpendicular to the c-axis in the P6(3)/m space group.
引用
收藏
页码：2058 / 2063
页数：6
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