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首页> 外文期刊>Crystal growth & design >Graphene-like Zinc Substituted Hydroxyapatite
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Graphene-like Zinc Substituted Hydroxyapatite

机译：石墨烯状锌取代羟基磷灰石

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The biological bone minerals form within a complex microenvironment that consists of various ions and template molecules. Silk fibroin provides an attractive template for biomimetic hydroxyapatite synthesis. In this study, graphene-like zinc substituted hydroxyapatite crystals were prepared using silk fibroin and sodium alginate as template molecules, and the resulting products were investigated. The alginate ions interacted with silk fibroin, and the additional zinc ions also influenced the crystal formation of hydroxyapatite. The graphene-like sheets with hydroxyapatite phase were approximately 3 nm in thickness, and the size was more than 100 nm. The structure of the zinc substituted hydroxyapatite was studied by transmission electron microscopy, and the results revealed that small crystallites of several nanometers were assembled into large size sheets. The synergy effect of zinc and alginate ions led to the preferred growth along (002) and (211) orientations. Accordingly, the mechanisms of crystal growth regulation have been demonstrated.
机译：生物骨骼矿物质在复杂的微环境中形成，该环境由各种离子和模板分子组成。丝素蛋白为仿生羟基磷灰石合成提供了有吸引力的模板。在这项研究中，以丝素蛋白和藻酸钠为模板分子制备了石墨烯样锌取代的羟基磷灰石晶体，并研究了所得产物。海藻酸根离子与丝素蛋白相互作用，另外的锌离子也影响羟基磷灰石的晶体形成。具有羟基磷灰石相的石墨烯状片的厚度约为3nm，并且尺寸大于100nm。通过透射电子显微镜研究了锌取代的羟基磷灰石的结构，结果表明，将几纳米的小晶体组装成大尺寸的薄片。锌和藻酸盐离子的协同效应导致沿（002）和（211）方向的优先生长。因此，已经证明了晶体生长调节的机理。

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