Bone mineral: evidence for hydroxy groups by inelastic neutron scattering

Taylor, Marina G.; Parker, Stewart F.; Simkiss, K.; Mitchell, Peter

doi:10.1039/b005666i

Cited by 54 publications

(53 citation statements)

References 15 publications

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“…Hydroxyl bands disappeared in the spectrum of fluorine substituted HA, which is why some researchers have neglected the existence of hydroxyl groups for mineral bone, [53] while others subscribe to the view that in poor crystalline apatite, hydroxyl groups are simply not resolved. [54] The results of the present study indicate that there was enough coupling to the fluoride to mask the characteristic hydroxyl band. There is also no evidence of bands that could be attributed to the OH…..F…..HO groups in all spectra.…”

Section: E Fourier Transform Infrared Analysismentioning

confidence: 85%

Sol-Gel Derived Nanocrystalline Fluoridated Hydroxyapatite Powders and Nanostructured Coatings for Tissue Engineering Applications

Zahrani

Fathi

Alfantazi

2010

Metall Mater Trans A

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Nanocrystalline fluoridated hydroxyapatite (FHA) powders and coatings with a chemical composition of Ca 10 (PO 4 ) 6 OH 2-x F x (where x values were selected equal to 0.0 ,0.5, 1.0, 1.5, and 2.0) were prepared through a modified simple sol-gel technique in comparison with conventional alkoxide-based sol-gel route. X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), fourier transform infrared (FTIR) spectroscopy, pF-meter with a fluorine-sensitive electrode, and inductively coupled plasma-optical emission spectroscopy (ICP-OES) analysis techniques were employed in order to evaluate phase composition, particle size distribution, morphology, functional groups, fluorine content, and purity of prepared FHA nanopowders, respectively. SEM analysis was used to study the surface morphology and cross section of the FHA coatings, deposited on 316L stainless steel substrate. Results indicated that single-phase and homogeneous FHA nanopowders with carbonate peaks in the FTIR spectrum were synthesized through the modified sol-gel technique. TEM analysis revealed that fluorapatite (FA) powder was composed of nanosized particles,~25 nm in size, with polyhedron shape and straight corners. In the modified sol-gel technique, polymerization and gelation kinetic of the sol were significantly improved without any need to use additives or pH control. Uniform, dense, well-adhered, and compacted FHA coatings were formed on the 316L stainless steel substrate after 24 hours of aging.

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Section: E Fourier Transform Infrared Analysismentioning

confidence: 85%

Sol-Gel Derived Nanocrystalline Fluoridated Hydroxyapatite Powders and Nanostructured Coatings for Tissue Engineering Applications

Zahrani

Fathi

Alfantazi

2010

Metall Mater Trans A

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“…Por comparação direta entre o espectro infravermelho do material fóssil e o do padrão de fosfato de cálcio do SDBS, foi possível concluir que as bandas localizadas em torno de 600 e 1050 cm -1 são associadas a grupos atômicos comuns aos dois materiais. Em particular, estas bandas podem ser atribuídas a vibrações do grupo fosfato 9,10 . Já as bandas localizadas em torno de 3500 cm -1 no espectro do fóssil podem ser atribuídas a vibrações do grupo OH 10 , uma vez que o fosfato de cálcio hidróxido, Ca 5 (PO 4 ) 3 (OH), foi identificado, através da técni-ca de difração de raios-X, como uma fase cristalina secundária.…”

Section: Resultsunclassified

Caracterização espectroscópica de peixe do período cretáceo (Bacia do Araripe)

Lima¹,

Saraiva²,

Lanfredi³

et al. 2007

Quím. Nova

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“…As shown in the FT-IR spectra in Fig. 3, the IR absorptions due to OH − and PO4 3− in a typical HAp structure 17,18) were observed in all of the HAp nanoparticles prepared under different conditions. In brief, the peaks at 3,573 and 632 cm −1 were attributed to O-H stretching vibrations in the HAp lattice, respectively, and the characteristic peaks due to PO 4 3− absorptions were found at 1092/1045 (ν3PO4 3− ), 963 (ν1PO4 3− ), 603/572 (ν4PO4 3− ), and 474 (ν2PO4 3− ) cm −1 .…”

Section: Preparation Of Hap Nanoparticlesmentioning

confidence: 89%

Adsorption and desorption behaviors of cetylpyridinium chloride on hydroxyapatite nanoparticles with different morphologies

et al. 2016

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Application of hydroxyapatite (HAp) nanoparticles to repair damaged enamel has attracted recent attention. In this study, HAp nanoparticles with various morphologies (spherical, short-rod, long-rod and fiber morphologies) were synthesized via chemical precipitation methods without the addition of template molecules, and the adsorption/desorption behaviors of a cationic antibacterial agent, cetylpyridinium chloride (CPC), on the HAp nanoparticles were evaluated. The adsorption of CPC on each HAp nanoparticle showed Langmuir-type adsorption, and the short-rod/long-rod HAp nanoparticles showed thermodynamically more stable adsorption of CPC than that with the spherical/fiber HAp nanoparticles. The desorption rate of CPC from the short-rod/long-rod HAp nanoparticles was slower than that of the spherical/fiber HAp nanoparticles. The HAp nanoparticles with different CPC release profiles presented here have potential applications as nanoparticulate enamel repair agents with antibacterial properties.

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Bone mineral: evidence for hydroxy groups by inelastic neutron scattering

Cited by 54 publications

References 15 publications

Sol-Gel Derived Nanocrystalline Fluoridated Hydroxyapatite Powders and Nanostructured Coatings for Tissue Engineering Applications

Sol-Gel Derived Nanocrystalline Fluoridated Hydroxyapatite Powders and Nanostructured Coatings for Tissue Engineering Applications

Caracterização espectroscópica de peixe do período cretáceo (Bacia do Araripe)

Adsorption and desorption behaviors of cetylpyridinium chloride on hydroxyapatite nanoparticles with different morphologies

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