2000
DOI: 10.1039/b001877p
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Influence of thermal treatment on the structure of calcium hydroxyapatite

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Cited by 63 publications
(69 citation statements)
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“…Synthetic colloidal CaHap particles were prepared by the following wet method [8][9][10]: 0.405 mol of Ca(OH) 2 was dissolved into 20 dm 3 of deionized-distilled water free of CO 2 in a sealed Teflon vessel. After being stirred for 24 h at room temperature, 0.236 mol of H 3 PO 4 was added into the solution and the suspension formed was stirred for a further 24 h at room temperature.…”
Section: Methodsmentioning
confidence: 99%
See 1 more Smart Citation
“…Synthetic colloidal CaHap particles were prepared by the following wet method [8][9][10]: 0.405 mol of Ca(OH) 2 was dissolved into 20 dm 3 of deionized-distilled water free of CO 2 in a sealed Teflon vessel. After being stirred for 24 h at room temperature, 0.236 mol of H 3 PO 4 was added into the solution and the suspension formed was stirred for a further 24 h at room temperature.…”
Section: Methodsmentioning
confidence: 99%
“…Ishikawa et al have found that the CaHap surface possesses three kinds of P-OH groups acting as the adsorption sites for CO 2 , CH 3 OH, CH 3 I, and H 2 O [5][6][7]. In addition, it has been found by TPD and Fourier transform infrared (FTIR) that pyridine, n-butylamine, and acetic acid are adsorbed on CaHap by hydrogen bonding to the surface P-OH groups of CaHap, and the number of surface P-OH groups on nonstoichiometric CaHap is 2.6 groups nm −2 [8][9][10]. Hence the regulation of surface P-OH groups may be expected to change various properties of CaHap, e.g., acidity and basicity, affinity and reactivity to molecules, and catalytic activity.…”
Section: Introductionmentioning
confidence: 99%
“…The number of surface P-OH groups determines various surface properties, for instance, acidity and basicity, affinity and reactivity to molecules and catalytic activity. Besides, HAp templates can be easily dissociated at mild acid concentrations and no special equipment is needed to recycle the dissolved HAp particles 102) . When using HAp as an inorganic template for hollow particle, such good affinity between HAp surface and shell species can be expected to form core-shell particle.…”
Section: Hydroxyapatite (Hap) Template Methodsmentioning
confidence: 99%
“…With increasing the X PEA , the N-H bands of aminoethyl group at 3350, 3263 and 3167 cm -1 and C-H bands develop while the surface P-OH bands further weaken (spectra c and d). It has been established that the area intensity of surface P-OH bands corresponds to the number of surface P-OH groups 11,12) . Therefore, the number of surface P-OH groups is reduced by grafting of PEA.…”
Section: Surface Structure and Property Of Pea-grafted Hapmentioning
confidence: 99%
“…It has been found that the Hap surface possesses ca. 2.6 groups/nm 2 of P-OH groups acting as the adsorption sites for CO 2 , CH 3 OH, H 2 O, n-butylamine and acetic acid [7][8][9][10][11][12] . Hence, the modification of Hap surface with various organic and inorganic substances is expected to give novel functions to this material.…”
Section: Calciummentioning
confidence: 99%