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Synthesis, characterization and antibacterial property of strontium half and totally substituted hydroxyapatite nanoparticles

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Abstract

Nanoparticles of hydroxyapatite(HAP), strontium half substituted hydroxyapatite (SrCaHAP) and strontium totally substituted hydroxyapatite (SrHAP) were prepared by sol-gel-supercritical fluid drying (SCFD) method. The nanoparticles were characterized by element content analysis, FT-IR, XRD and TEM, and the effects of strontium substitution on crystal structure, crystallinity, particle shape and antibacterial properties of the nanoparticles on Escherichia coli, Staphylococcus aureus, Lactobacillus were researched. Results show that strontium can half and totally substitute for calcium and enter the structure of apatite according to the initial atomic ratios of Sr/[Sr+Ca] as 0.5, 1. The substitution decreases the IR wavenumbers of SrCaHAP and SrHAP, and changes the morphology of the nanoparticles from short rod shaped HAP to needle shaped SrCaHAP, and back to short rod shaped SrHAP. The crystallinity of HAP is higher than that of SrCaHAP, but is lower than that of SrHAP. Moreover, the antibacterial property of SrCaHAP and SrHAP are improved after the calcium is half and totally substituted by strontium.

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Correspondence to Yingguang Lin  (林英光).

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Lin, Y., Yang, Z., Cheng, J. et al. Synthesis, characterization and antibacterial property of strontium half and totally substituted hydroxyapatite nanoparticles. J. Wuhan Univ. Technol.-Mat. Sci. Edit. 23, 475–479 (2008). https://doi.org/10.1007/s11595-006-4475-2

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  • DOI: https://doi.org/10.1007/s11595-006-4475-2

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