Preparation and characterisation of calcium citrate wires

Micro & nano letters

article

Liangzhao Zhong¹  Junfeng Li¹  Yang Gao¹  Wenqiang Cao¹  Peicong Zhang¹  Xuefei Lai² 

[1] Department of Materials Science and Engineering, Chengdu University of Technology;College of Chemical Engineering, Sichuan University

关键词: calcium compounds;    organic compounds;    crystal growth from solution;    X-ray diffraction;    crystal structure;    texture;    free energy;    adsorption;    dissolving;    precipitation;    biomedical materials;    calcium citrate wires;    soft chemical method;    alcohol-water mixture;    X-ray diffraction;    crystallinity degree;    heating time;    (200) crystal plane;    free energy;    supersaturation state;    adsorption;    growth velocity;    sheet precursor;    preferential growth orientation;    dissolution-reprecipitation process;    biomaterials;   

DOI  :  10.1049/mnl.2015.0090

学科分类：计算机科学（综合）

来源: Wiley

【 摘 要 】

Long calcium citrate wires were successfully prepared using a convenient and effective soft chemical method that involved heating the sheet precursor at an appropriate temperature in a mixture of alcohol and water for a sufficient amount of time. The X-ray diffraction patterns showed that the crystallinity degree increased with heating time. Moreover, the (200) crystal plane was the preferential growth face that was influenced by alcohol. Such influence was ascribed to alcohol being able to change the free energy and the supersaturation state of the solution. In addition, alcohol might adsorb onto the surface of the crystal and change the growth velocity of each crystal plane. The sheet precursor progressively turned into consecutive long wires by growing along the preferential growth orientation during the dissolution–reprecipitation process. The thickness of the wires was ∼8–30 nm. Long calcium citrate wires were produced to reinforce and strengthen biomaterials or for other purposes.

【 授权许可】

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