A novel sol–gel technique for hydroxyapatite preparation

Bezzi, G.; Celotti, G.; Landi, Elena; Torretta, Teresa La; Sopyan, Iis; Tampieri, Anna

doi:10.1016/s0254-0584(02)00392-9

Cited by 229 publications

(134 citation statements)

References 10 publications

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“…These are similar to the particle morphologies reported elsewhere [50][51][52][53][54][55]. Details of the observed average particle size from FESEM images are tabulated in Table 2.…”

Section: Of 17supporting

confidence: 85%

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Synthesis and characterisation of nanohydroxyapatite using an ultrasound assisted method

Poinern

Brundavanam

Mondinos

et al. 2009

Ultrasonics Sonochemistry

151

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Nanostructured hydroxyapatite (HAP) was prepared by a wet precipitation method using Ca(NO 3 ) and KH 2 PO 4 as the main material and NH 3 as the precipitator under ultrasonic irradiation. The Ca/P ratio was set at 1.67 and the pH maintained at a minimum of 9. The temperature conditions and ultrasound influences were investigated using X-ray diffraction (XRD), Field Emission Scanning Electron Microscopy (FESEM) and Fourier Transform Infrared Spectroscopy (FT-IR). The results showed that Nano-HAP can be obtained by this method and the particles were achieved to around 30nm.

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“…These are similar to the particle morphologies reported elsewhere [50][51][52][53][54][55]. Details of the observed average particle size from FESEM images are tabulated in Table 2.…”

Section: Of 17supporting

confidence: 85%

“…The precipitation method is the most common wet chemical method of preparing calcium phosphate ceramic and this can be either by a homogeneous or inhomogeneous process [34].…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Synthesis and characterisation of nanohydroxyapatite using an ultrasound assisted method

Poinern

Brundavanam

Mondinos

et al. 2009

Ultrasonics Sonochemistry

151

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“…39 It should also be mentioned that the electronic properties of HAP are sensitive to several variables such as Ca/P ratios, structural defects, crystal size, temperature, and the preparation procedures used to produce the HAP. 40 Several chemical routes have been used to manufacture HAP with diverse results; the deviation from the normal HAP phase can be significant and is technique dependent.…”

Section: Introductionmentioning

confidence: 99%

Thermal and ultrasonic influence in the formation of nanometer scale hydroxyapatite bio-ceramic

Poinern¹,

Brundavanam²,

Le³

et al. 2011

IJN

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Hydroxyapatite (HAP) is a widely used biocompatible ceramic in many biomedical applications and devices. Currently nanometer-scale forms of HAP are being intensely investigated due to their close similarity to the inorganic mineral component of the natural bone matrix. In this study nano-HAP was prepared via a wet precipitation method using Ca(NO 3 ) 2 and KH 2 PO 4 as the main reactants and NH 4 OH as the precipitator under ultrasonic irradiation. The Ca/P ratio was set at 1.67 and the pH was maintained at 9 during the synthesis process. The influence of the thermal treatment was investigated by using two thermal treatment processes to produce ultrafine nano-HAP powders. In the first heat treatment, a conventional radiant tube furnace was used to produce nano-particles with an average size of approximately 30 nm in diameter, while the second thermal treatment used a microwave-based technique to produce particles with an average diameter of 36 nm. The crystalline structure and morphology of all nanoparticle powders produced were investigated using X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), and Fourier transform infrared spectroscopy (FT-IR). Both thermal techniques effectively produced ultrafine powders with similar crystalline structure, morphology and particle sizes.

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“…Therefore, different production methods were reported such as mechanochemistry [3,4], ultrasonic irradiation [5], microwave irradiation [6,7], sol-gel [8][9][10][11], chemical precipitation [12,13], hydrothermal method [14][15][16], hydrolysis [17], microemulsion [18][19][20], and emulsion liquid membrane [21]. The synthesized HAp does not have adequate biological properties as the natural apatite existing in bones.…”

Section: Introductionmentioning

confidence: 99%

Physiochemical characterizations of hydroxyapatite extracted from bovine bones by three different methods: Extraction of biologically desirable HAp

Barakat

Khalil

Sheikh

et al. 2008

Materials Science and Engineering: C

168

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A novel sol–gel technique for hydroxyapatite preparation

Cited by 229 publications

References 10 publications

Synthesis and characterisation of nanohydroxyapatite using an ultrasound assisted method

Synthesis and characterisation of nanohydroxyapatite using an ultrasound assisted method

Thermal and ultrasonic influence in the formation of nanometer scale hydroxyapatite bio-ceramic

Physiochemical characterizations of hydroxyapatite extracted from bovine bones by three different methods: Extraction of biologically desirable HAp

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