First-principles study on the hydroxyl migration from inner to surface in hydroxyapatite
First-principles study on the hydroxyl migration from inner to surface in hydroxyapatite
复制标题
羟基磷灰石羟基从内到表面迁移的第一性原理研究
DOI:
10.1016/j.apsusc.2018.05.050
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发表时间:
2018-09
影响因子:
6.7
通讯作者:
Yang Mingli
中科院分区:
文献类型:
--
作者:
Wang Xian;Zhang Li;Zeng Qun;Jiang Gang;Yang Mingli
Understanding to the surface structure of hydroxyapatite (HAp) is crucial for the design of HAp-based biomaterials. While most bioactive HAp materials have disordered structures, the ordered surface structures relaxed from HAp crystal are commonly used for studying their interaction with biomolecules. Using a combined approach of molecular dynamics simulated annealing simulations and density functional theory calculations, we proposed a disordered surface structure model for HAp. In this model hydroxyls beneath the surface move outward and cover the exposed calcium ions. The destabilization caused by hydroxyl vacancy is compensated by the stabilization of hydroxyl coverage. The Ca-exposed surface with strong electrophilicity changes into the hydroxyl- and phosphate-covered surface with moderate activity. The new surface model would be useful for regulating the surface activity of HAp-based biomaterials.
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影响因子:
3
作者:
Grimme, Stefan
通讯作者:
Grimme, Stefan
影响因子:
4.2
作者:
Kandori, K;Masunari, A;Ishikawa, T
通讯作者:
Ishikawa, T
DOI:
10.1063/1.4813828
发表时间:
2013-07
期刊:
The Journal of chemical physics
影响因子:
--
作者:
A. Slepko;A. Demkov
通讯作者:
A. Slepko;A. Demkov
影响因子:
3.9
作者:
Wu Hong;Xu Dingguo;Yang Mingli;Zhang Xingdong
通讯作者:
Zhang Xingdong
影响因子:
41.2
作者:
Yan Wang;S. Von Euw;F. M. Fernandes;Sophie Cassaignon;M. Selmane;G. Laurent;G. Péhau-Arnaudet;C. Coelho;L. Bonhomme-Coury;M. Giraud‐Guille;F. Babonneau;T. Azaïs;Nadine Nassif
通讯作者:
Yan Wang;S. Von Euw;F. M. Fernandes;Sophie Cassaignon;M. Selmane;G. Laurent;G. Péhau-Arnaudet;C. Coelho;L. Bonhomme-Coury;M. Giraud‐Guille;F. Babonneau;T. Azaïs;Nadine Nassif