One-step Solvothermal Synthesis of Strontium-doped Ultralong Hydroxyapatite Nanowires

doi:10.15541/jim20190398

Abstract

Abstract:

Ultralong hydroxyapatite nanowires (UHANWs) exhibit great potential in constructing different kinds of biomaterials such as the highly flexible biomedical paper and elastic porous scaffolds for various biomedical applications. Moreover, strontium (Sr), a trace element in human body, plays an important role in bone metabolism. In this study, Sr-doped UHANWs (Sr-UHANWs) with various Sr/(Sr+Ca) molar ratios have been successfully prepared by the one-step oleate precursor solvothermal method. The effects of the Sr/(Sr+Ca) molar ratio on the morphology and crystal phase of the Sr-UHANWs were investigated. The as-prepared Sr-UHANWs exhibit high flexibility and ultralong 1D nanostructure. Moreover, the energy dispersive spectroscopy, X-ray powder diffraction, and Fourier transform infrared spectroscopy of the as-prepared samples reveal that Sr element has been successfully incorporated in UHANWs. The preparation method developed in this work may be suitable for the synthesis of Sr-UHANWs with Sr/(Sr+Ca) molar ratios ranging from 0 to 100 %, which may enlarge the biomedical applications of UHANWs such as bone and teeth defect repair.

Key words: hydroxyapatite, strontium, nanowire, solvothermal, biomaterials

CLC Number:

TQ174

SUN Tuanwei,ZHU Yingjie. One-step Solvothermal Synthesis of Strontium-doped Ultralong Hydroxyapatite Nanowires[J]. Journal of Inorganic Materials, 2020, 35(6): 724-728.

Figures/Tables 4

Fig. 1 XRD patterns of the as-prepared Sr-UHANWs with different Sr/(Sr+Ca) molar ratios

Fig. 2 SEM images of undoped UHANWs (a, b) and Sr40-UHANWs (c, d), and energy-dispersive spectroscopy (EDS) elemental mapping of Sr, Ca, P and O elements in Sr40-UHANWs (e)

Fig. 3 SEM images of strontium-doped UHANWs with different Sr/(Sr+Ca) molar ratios (a, b) Sr5-UHANWs; (c, d) Sr20-UHANWs; (e, f) Sr90-UHANWs; (g, h) Sr100-UHANWs

Fig. 4 FT-IR spectra of the as-prepared Sr-UHANWs with different Sr/(Sr+Ca) molar ratios

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