The transformation of single-crystal calcium phosphate ribbon-like fibres to hydroxyapatite spheres assembled from nanorods | |
Department | 固体润滑国家重点实验室 ; 先进润滑与防护材料研究发展中心 |
Zhang YJ(张彦杰); Lv JJ(吕晋军) | |
2008 | |
Source Publication | Nanotechnology |
ISSN | 0957-4484 |
Volume | 19Pages:155608(1-10) |
Abstract | Two precursors of ribbon-like anhydrous dicalcium phosphate (DCPA) and calcium phosphate fibres were successfully synthesized at 85 ◦C through a simple and mild pathway from Ca(NO3)2·4H2Oand (NH4)2HPO4 upon the hydrolysis of urea. Different molar concentrations of urea resulted in different precursors, including precursor I (DCPA phase) and precursor II (calcium phosphate with DCPA, octacalcium phosphate (OCP) and hydroxyapatite (HAp) phase). By immersing the two precursors in ammonium hydroxide solution (pH = 12), the transformation from precursors to hydroxyapatite could be achieved. X-ray diffraction (XRD) results combined with transmission electron microscopy (TEM) indicated that DCPA fibres (precursor I) were transformed to HAp nanorods in transformation I. In transformation II,dandelion-like spheres assembled by HAp nanorods were obtained from calcium phosphate (precursor II). The mechanisms of transformations I and II are also proposed and discussed based on the XRD and TEM results. |
Subject Area | 材料科学与物理化学 |
Funding Organization | the National Natural Science Foundation of China (50572107);‘West Light Program of 2003’ of the Chinese Academy of Sciences |
Indexed By | SCI |
Language | 英语 |
Funding Project | 金属基高温润滑材料组 |
Document Type | 期刊论文 |
Identifier | http://ir.licp.cn/handle/362003/2682 |
Collection | 固体润滑国家重点实验室(LSL) |
Corresponding Author | Lv JJ(吕晋军) |
Recommended Citation GB/T 7714 | Zhang YJ,Lv JJ. The transformation of single-crystal calcium phosphate ribbon-like fibres to hydroxyapatite spheres assembled from nanorods[J]. Nanotechnology,2008,19:155608(1-10). |
APA | 张彦杰,&吕晋军.(2008).The transformation of single-crystal calcium phosphate ribbon-like fibres to hydroxyapatite spheres assembled from nanorods.Nanotechnology,19,155608(1-10). |
MLA | 张彦杰,et al."The transformation of single-crystal calcium phosphate ribbon-like fibres to hydroxyapatite spheres assembled from nanorods".Nanotechnology 19(2008):155608(1-10). |
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