A new method for the solid-state synthesis of tetracalcium phosphate, a dental cement: X-ray powder diffraction and IR studies

Sargin, Y.; Kızılyallı, M.; Telli, Cüneyt; Güler, Halil

doi:10.1016/s0955-2219(96)00196-3

Cited by 49 publications

(37 citation statements)

References 15 publications

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“…The double peak present at 599 cm´1 and 603 cm´1, as shown in ESI Figure 2, is associated with bending modes in the P-O bonds in the phosphate groups. The peak observed at 1024 cm´1 indicates a stretching mode in the P-O bonds within the HAP, which agrees with the reports described elsewhere [36,37]. Therefore, formation of the phosphate group within the synthesised HAP is confirmed via FTIR studies.…”

Section: Hydroxyapatite (Hap) Synthesissupporting

confidence: 91%

High Yield Synthesis of Hydroxyapatite (HAP) and Palladium Doped HAP via a Wet Chemical Synthetic Route

et al. 2016

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Abstract:A novel procedure for the synthesis of both hydroxyapatite (HAP) and palladium doped HAP via a wet chemical precipitation method is described herein. X-ray Diffraction (XRD), Raman Spectroscopy, Scanning Electron Microscopy (SEM) with Energy Dispersive X-ray Spectroscopy (EDS) and Fourier Transform Infrared (FT-IR) Spectroscopy are utilised to characterise the synthesised material's morphology, structure and crystallinity. The developed synthetic protocol produces high purity HAP with an average yield of 83.7 (˘0.10)% and an average particle size of 58.2 (˘0.98) nm, such synthesis has been achieved at room temperature and within a time period of less than 24 h. Additionally, in order to enhance the overall conductivity of the material, a range of Pd (2, 4 and 6 wt %) metal doped HAP has been synthesised, characterised and, for the first time, applied towards the competitive electrocatalytic detection of hydrazine, exhibiting a linear range of 50-400 µM with a limit of detection (3σ) of 30 µM.

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Section: Hydroxyapatite (Hap) Synthesissupporting

confidence: 91%

High Yield Synthesis of Hydroxyapatite (HAP) and Palladium Doped HAP via a Wet Chemical Synthetic Route

et al. 2016

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“…This peak is mainly due to O-H stretching vibration in HAP. The peak obtained at 1,043.24 cm −1 is associated with the stretching modes of the P-O bonds of HAP (Sargin et al 1997). The double peak at 602.17 and 567.5 cm −1 is due to bending modes of P-O bonds in phosphate groups (Ramanan and Venkatesh 2004).…”

Section: Ftirmentioning

confidence: 94%

Removal of Fluoride from Drinking Water Using Novel Adsorbent Magnesia-Hydroxyapatite

Mondal

George

2015

Water Air Soil Pollut

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In many parts of the world, fluoride in drinking water is responsible for notable public health issues. The present study is aimed to prepare a new adsorbent magnesia-hydroxyapatite (Mg-HAP) that can serve as a valuable defluoridating agent. Characterization of the synthesized adsorbent was done by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), Transmission electron microscope (TEM), and Scanning electron microscope (SEM)/Energy-dispersive X-ray spectroscopy (EDX) analysis to reveal the bonding patterns, phase characteristics, and microstructural and morphological details. The influences of pH, adsorbent dose, contact time, and initial fluoride concentration and the effect of interfering anions were studied. The defluoridation capacity was evaluated to be 1.4 mg/g, and the adsorbent showed very good capability to remove fluoride from contaminated water over a wide range of pH. Equilibrium modeling was done, and the experimental data was fitted into Langmuir, Freundlich, Temkin, and Dubinin-Radushkevich isotherms. Study of the kinetic data for the adsorption process revealed that it follows pseudo-second-order reaction. It also indicated that the intraparticle diffusion contributes to the rate-determining step in the process. The quality of treated water was analyzed for total dissolved solids (TDS), turbidity, residual calcium, residual phosphorus content, electrical conductivity, hardness, and total alkalinity. The results obtained were very promising and confirmed the prospects of usage of Mg-HAP in defluoridation of drinking water.Abbreviations q e Amount of adsorption at equilibrium (mg/g) q t Amount of adsorption at time t (mg/g) C 0 Initial concentrations of fluoride (mg/L) C e Equilibrium concentrations of fluoride (mg/L) C t Concentration of fluoride at time t (mg/L) vVolume of the aqueous solution (L) m Adsorbent mass (g) Q 0 Maximum adsorption capacity reflecting complete monolayer (mg/g) R L Separation factor depicting favorability of the process bLangmuir constant related to energy K f Freundlich constants (mg/g) N Heterogeneity factor R Universal gas constant (8.314 J/mol K) T Temperature (K) A T Temkin isotherm equilibrium binding constant (L/g) B T Temkin isotherm constant b 1 Adsorption rate constant of first order reaction (min −1 ) b 2 Adsorption rate constant of first order reaction (g mg −1 min −1 ) k i Intraparticle diffusion rate constant (mg g −1 min −1/2 ) a Initial adsorption rate (mg g −1 min −1 ) α Desorption rate (g mg −1 ) Water Air Soil Pollut (2015) 226:241

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“…The most common method for the preparation of TTCP is limited to solid-state reaction at high temperature [32][33][34][35] The resulting powder was milled in n-heptane for 8h, dried at 100 o C, and kept under vacuum to avoid hydration 36 .…”

Section: Materials Preparation and Characterizationmentioning

confidence: 99%

Synthesis, Properties and Hydration Characteristics of Novel Nano-Size Mineral Trioxide and Tetracalcium Phosphate for Dental Applications

Radwan¹,

El-Hamid²,

Nagi³

2016

Orient. J. Chem

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Nano particles made of pure single phase Mineral trioxide [tricalcium silicate (C 3 S)] and Tetracalcium phosphate (TTCP) bio ceramics were prepared via solid state reaction at high temperature. Setting times, compressive strength, pH, XRD, FTIR and scanning electron microscopy (SEM) were investigated. Cytotoxicity and antibacterial activity of both C 3 S and TTCP to human gingival fibroblasts were studied. Both C 3 S and TTCP compounds undergo hydration reaction when mixed with distilled water. A delayed setting time and very poor mechanical properties for TTCP were detected compared to those of C 3 S phase. The nano-structure C 3 S bio ceramic was found to be completely safe to BHK cells compared with TTCP. The prepared C 3 S and TTCP pastes were applied to the demineralized dentin specimens for seven days. The ultramorphology of dentin revealed that both C 3 S and TTCP are successful in dentinal tubules occlusion, thus they are beneficial for dental application in the treatment of teeth hypersensitivity.

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A new method for the solid-state synthesis of tetracalcium phosphate, a dental cement: X-ray powder diffraction and IR studies

Cited by 49 publications

References 15 publications

High Yield Synthesis of Hydroxyapatite (HAP) and Palladium Doped HAP via a Wet Chemical Synthetic Route

High Yield Synthesis of Hydroxyapatite (HAP) and Palladium Doped HAP via a Wet Chemical Synthetic Route

Removal of Fluoride from Drinking Water Using Novel Adsorbent Magnesia-Hydroxyapatite

Synthesis, Properties and Hydration Characteristics of Novel Nano-Size Mineral Trioxide and Tetracalcium Phosphate for Dental Applications

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