锌取代纳米β-磷酸三钙颗粒的制备
Preparation of nanosized beta-tricalcium phosphate particles with Zn substitution.
作者信息
Zou Chao, Weng Wenjian, Cheng Kui, Du Piyi, Shen Ge, Han Gaorong
机构信息
Department of Materials Science & Engineering, Zhejiang University, Hangzhou 310027, China.
出版信息
J Mater Sci Mater Med. 2008 Mar;19(3):1133-6. doi: 10.1007/s10856-007-0170-x. Epub 2007 Aug 15.
Nanosized beta-ZnTCP powders with different Zn contents were prepared through coprecipitation of ACP out of the CaCl2-ZnCl2-Na3PO4-PEG system, and calcination of the ACP precursor at 800 degrees C for 3 h. The characterizations of the products showed that the products belong to beta-TCP phase, and the particles sizes of them are about 300 nm, smaller than that of beta-TCP (500 nm). Both the Zn2p binding energy and lattice parameter variations of beta-TCP evidenced that Zn had substituted for Ca in the lattice. Such nanosized beta-ZnTCP powders could be used as bone repair materials with desired and sustained release of Zn.
通过在CaCl2-ZnCl2-Na3PO4-PEG体系中使无定形磷酸钙（ACP）共沉淀，并将ACP前驱体在800℃下煅烧3小时，制备了具有不同锌含量的纳米β-磷酸三钙锌（β-ZnTCP）粉末。产物表征表明，产物属于β-TCP相，其粒径约为300nm，小于β-TCP的粒径（500nm）。β-TCP的Zn2p结合能和晶格参数变化均证明锌已在晶格中取代了钙。这种纳米β-ZnTCP粉末可作为具有所需且持续释放锌的骨修复材料。
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