Synthesis and Characterization of Silicon Substituted Hydroxyapatite

Kim, Soo Ryong; Riu, Doh‐Hyung; Lee, Y.J.; Kim, Yun Hae

doi:10.4028/www.scientific.net/kem.218-220.85

Cited by 31 publications

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“…Some authors [9][10][11] have prepared SiHA using TEOS (tetraethoxysilane) as a silicon source via sol-gel method. The materials obtained include other crystalline phases, such as α-Ca 3 (PO 4 ) 2 (α-tricalcium phosphate, TCP) and CaO besides the HA phase.…”

Section: Introductionmentioning

confidence: 99%

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Sol-gel bioactive glass-ceramics Part I: Calcium phosphate silicate/wollastonite glass-ceramics

et al. 2009

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Abstract:In this work we present experimental results about synthesis, structure evolution and in vitro bioactivity of new calcium phosphate silicate/wollastonite (CPS/W) glass-ceramics. The samples obtained were synthesized via polystep sol-gel process with different Ca/P+Si molar ratio (R). The structure of the materials obtained was studied by XRD, FTIR spectroscopy and SEM. XRD showed the presence of Ca 15 (PO 4 ) 2 (SiO 4 ) 6 , β-CaSiO 3 and α-CaSiO 3 for the sample with R=1.89 after thermal treatment at 1200°C/2h. The XRD results are in good agreement with FTIR analysis. SEM denotes that apatite formation can be observed after soaking in simulated body fluid (SBF). © Versita Warsaw and Springer-Verlag Berlin Heidelberg.

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Section: Introductionmentioning

confidence: 99%

“…The materials obtained include other crystalline phases, such as α-Ca 3 (PO 4 ) 2 (α-tricalcium phosphate, TCP) and CaO besides the HA phase. This kind of silicon precursor can lead to SiHA with different physicaland chemical properties [11].…”

Section: Introductionmentioning

confidence: 99%

Sol-gel bioactive glass-ceramics Part I: Calcium phosphate silicate/wollastonite glass-ceramics

et al. 2009

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“…In recent years some authors have even prepared silicon substituted hydroxyapatites (SiHA) via solgel method using TEOS as a SiO 2 precursor for glass-ceramic samples [31][32][33]. In the materials so synthesized, they found other crystalline phases, such as TCP and CaO.…”

Section: Introductionmentioning

confidence: 99%

Organic/Inorganic bioactive materials Part III: in vitro bioactivity of gelatin/silicocarnotite hybrids

et al. 2009

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Abstract:In this work we present our experimental results on synthesis, structure evolution and in vitro bioactivity assessment of new gelatin/ silicocarnotite hybrid materials. The hybrids were obtained by diluting gelatin (G) and silicocarnotite (S) ceramic powder with G:S ratios of 75:25 and 25:75 wt.% in hot (40 o C) water. The hybrids were characterized using XRD, FTIR, SEM/EDS and XPS. FTIR depicts that the "red shift" of amide I and COO -could be attributed to the fact that the gelatin prefers to chelate Ca 2+ from S. The growth of calcium phosphates on the surface of the hybrids synthesized and then immersed in 1.5 SBF for 3 days was studied by using of FTIR, XRD and SEM/EDS. According to FTIR results, after an immersion of 3 days, A and B-type CO 3 HA can be observed on the surface. XRD results indicate the presence of hydroxyapatite with well defined crystallinity. SEM/EDS of the precipitated layers show the presence of CO 3 HA and amorphous calcium phosphate on the surface of samples with different G/S content when immersed in 1.5 SBF. XPS of the G/S hybrid with 25:75 wt.% proved the presence of Ca-deficient hydroxyapatite after an in vitro test for 3 days. Warsaw and Springer-Verlag Berlin Heidelberg. © Versita

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“…The band found at around 875 cm 1 can be characteristic to the ν2 vibration mode and the stretching vibrations of the CO 3 2-group are highlighted by the band in the region 1400 and 1500 cm -1 . The carbonate presence in the specimens is due to absorbance of carbon dioxide from the air during synthesis of the sample and it has been reported by others [23,24].…”

Section: Resultsmentioning

confidence: 96%

Rietveld Refinement of the Crystal Structure of Hydroxyapatite Using X-ray Powder Diffraction

Yacoubi¹,

Massit²,

Moutaoikel³

et al. 2017

AJMSE

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The stoichiometric hydroxyapatite, Ca 10 (PO 4 ) 6 (OH) 2 is prepared by an aqueous precipitation method at room temperature, the main reactants were Ca(OH) 2 and H 3 PO 4 without addition of ammonia solution. The sample was analyzed by Fourier transformed infrared spectroscopy (FTIR) which reveals the presence of a small amount of carbonate due to absorbance of carbon dioxide from the air during synthesis process. The crystal structure was carried out by X-ray powder diffraction data and the Rietveld method using FullPROF software. We confirmed that this material has a hexagonal structure (space group P63/m; Z = 1). Unit-cell parameters with higher precision (a = b = 9.4159(4) Å , c = 6.8819(3) Å, α = β = 90°; and γ = 120°).

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Synthesis and Characterization of Silicon Substituted Hydroxyapatite

Cited by 31 publications

References 0 publications

Sol-gel bioactive glass-ceramics Part I: Calcium phosphate silicate/wollastonite glass-ceramics

Sol-gel bioactive glass-ceramics Part I: Calcium phosphate silicate/wollastonite glass-ceramics

Organic/Inorganic bioactive materials Part III: in vitro bioactivity of gelatin/silicocarnotite hybrids

Rietveld Refinement of the Crystal Structure of Hydroxyapatite Using X-ray Powder Diffraction

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