Microwave-assisted synthesis of hydroxyapatite hollow microspheres in aqueous solution |
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| Authors: | Ke-Wei Wang Ying-Jie Zhu Feng Chen Guo-Feng Cheng Yue-Hong Huang |
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| Affiliation: | 1. Department of Nanoscience and Technology, Bharathiar University, Coimbatore 641046, India;2. Department of Physics, Government Arts College, Coimbatore 641018, India;1. Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, A.P. 1-1010, Querétaro, 76000, Qro., Mexico;2. División de Investigación y Posgrado, Facultad de Ingeniería, Universidad Autónoma de Querétaro, Cerro de las Campanas s/n, C.P. 76010 Querétaro, Qro., Mexico;3. Instituto de Física, Universidad Nacional Autónoma de México, Apdo. Postal 20-364, México 01000 D.F., Mexico;4. Instituto Nacional de Investigaciones Nucleares, Carr. México-Toluca S/N La Marquesa, Ocoyoacac, Edo. de México C. P. 52750, Mexico;5. Centro de Investigación y de Estudios Avanzados, Unidad Querétaro, Libramiento Norponiente # 2000. Fracc. Real de Juriquilla, C.P. 76230 Querétaro, Qro., Mexico;1. Department of Food Process Engineering, School of Engineering Sciences, University of Ghana, Accra, Ghana;2. Department of Material Sciences, College of Engineering, Tuskegee University, Tuskegee, AL 36088, United States;3. Department of Chemistry, School of Physical Sciences, University of Ghana, Accra, Ghana;4. Department of Material Science and Engineering, University of Ghana, Accra, Ghana;5. Department of Physics and Environmental Engineering, Benedict College, Columbia, SC, United States |
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| Abstract: | We report a template-free microwave-assisted hydrothermal method for the preparation of hydroxyapatite hollow microspheres constructed by the self-assembly of nanosheets using Ca(CH3COO)2, Na2HPO4, NaH2PO4 and sodium citrate in aqueous solution. X-ray powder diffraction (XRD) patterns indicated that the as-prepared samples consisted of hydroxyapatite. Transmission electron microscopy (TEM) and scanning electron microscopy (SEM) micrographs showed that the as-prepared products were composed of hollow microspheres assembled with nanosheets and had three-dimensional nanoporous nanostructured networks. The experimental parameters were varied to investigate their effects on the product, and a possible formation mechanism was proposed. The as-prepared hydroxyapatite hollow microspheres have a potential application in drug delivery. |
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