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Facile synthesis and the phase transition mechanism of fluoridated hydroxyapatite with a hierarchical architecture
Wang, Liping1; Wang, Ming; Wang, Yunli; Shao, Yiran; Zhu, Yingchun
2017
发表期刊CRYSTENGCOMM
ISSN1466-8033
卷号19期号:48页码:7298
摘要Fluorine plays an important role in dental protection and formation of enamel materials, however the intrinsic effect of fluorine on the formation mechanism of fluoridated hydroxyapatite still needs to be known. In this work, pure fluoridated hydroxyapatite (FHA) with a hierarchical architecture was produced by a simple one-pot method using CaF2, Ca(OH)(2) and Ca(H2PO4)(2)center dot H2O. It was found that the hierarchical fluoridated hydroxyapatite showed a unique orientation structure and different phase transformation mechanism compared with hydroxyapatite (HA). In the phase transition process from DCPD (CaHPO4 center dot 2H(2)O, brushite) to DCPA (CaHPO4, monetite), and then to FHA, hierarchical FHA was formed with the c-axis-oriented nanowires perpendicular to the planes of DCPA plates. More importantly, the crystal orientation relationship between FHA and DCPA was found for the first time to be FHA [010]// DCPA [001] and FHA (001)//DCPA (010), which is quite different from the crystal orientation relationship of HA [(1) over bar 10]//DCPA [110] and HA ((1) over bar 12)//DCPA (112). It was found that the phase transition process from (100)(DCPA) to (100)(FHA) was occurred with a good crystal lattice match. F-on (100)(FHA) had a small ionic radius and high electronegativity, decreased the crystal lattices of (100)(FHA) and might enhance their negativity and reactivity. This result may help better understand the effect of fluorine on the crystal growth process of natural enamel and the preparation of pure FHA with a hierarchical architecture is informative for the synthesis of enamel-like biomaterials.
DOI10.1039/c7ce01871a
WOS记录号WOS:000417752200010
引用统计
文献类型期刊论文
条目标识符http://ir.sic.ac.cn/handle/331005/26618
专题中国科学院上海硅酸盐研究所
作者单位1.Chinese Acad Sci, Shanghai Inst Ceram, Key Lab Inorgan Coating Mat CAS, Shanghai 200050, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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Wang, Liping,Wang, Ming,Wang, Yunli,et al. Facile synthesis and the phase transition mechanism of fluoridated hydroxyapatite with a hierarchical architecture[J]. CRYSTENGCOMM,2017,19(48):7298.
APA Wang, Liping,Wang, Ming,Wang, Yunli,Shao, Yiran,&Zhu, Yingchun.(2017).Facile synthesis and the phase transition mechanism of fluoridated hydroxyapatite with a hierarchical architecture.CRYSTENGCOMM,19(48),7298.
MLA Wang, Liping,et al."Facile synthesis and the phase transition mechanism of fluoridated hydroxyapatite with a hierarchical architecture".CRYSTENGCOMM 19.48(2017):7298.
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