Abstract
Nanorod hydroxyapatite (NRHA)/graphene oxide (GO) composites with weight ratios of 0.4, 1.5, and 5 have been fabricated by a facile ultrasonic-assisted method at room temperature and atmospheric pressure. The chemical structure properties and morphology of the composites were characterized by field emission source scanning electron microscope, X-ray diffraction, transmission electron microscopy, and high-resolution transmission electron microscopy. The results indicate that the NRHA/ GO composites have an irregular surface with different degree wrinkles and are stable, and NRHA are well combined with GO. In addition, the biomimetic mineralization mechanism of hydroxyapatite on the NRHA/GO composites in simulated body fluid (SBF) is presented. The presence of a bone-like apatite layer on the composite surface indicate that the NRHA/GO composites facilitate the nucleation and growth of hydroxyapatite crystals in SBF for biomimetic mineralization. Moreover, the NRHA- 1.5/GO composite and pure GO were cultured with MC3T3-E1 cells to investigate the proliferation and adhesion of cells. In vitro cytocompatibility evaluation demonstrated that the NRHA/GO composite can act as a good template for the growth and adhesion of cells. Therefore, the NRHA/GO composite could be applied as a GO-based, free-template, non-toxic, and bioactive composite to substitute for a damaged or defect bone.
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This work was financially supported by the National Natural Science Foundation of China (Grant Nos. 21201142 and 11502158) and Southwest University of Science and Technology Researching Project (Grant No. 14tdsc03).
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Duan, P., Shen, J., Zou, G. et al. Biomimetic mineralization and cytocompatibility of nanorod hydroxyapatite/graphene oxide composites. Front. Chem. Sci. Eng. 12, 798–805 (2018). https://doi.org/10.1007/s11705-018-1708-9
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DOI: https://doi.org/10.1007/s11705-018-1708-9