Obtenção e caracterização de hidroxiapatita obtida por síntese hidrotermal e caracterização

Araújo, Maria Nicheilly Pontes; Vieira, Welly Evilly da Silva; Carvalho, Lucelma Pereira de; Melo, Higor Diego Farias de; Souza, Thaís Cavalcante de; Berenguer, Romildo Alves

doi:10.33448/rsd-v9i11.10247

Cited by 2 publications

(2 citation statements)

References 19 publications

(16 reference statements)

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“…They are also beneficial in the chemical modification of hydroxyapatite nanoparticles' surface and are achieved through functionalization, which introduces functional groups that enhance the effective attachment of therapeutic materials, targeting, and release [112]. CHA synthesis methods can be grouped into two: wet and dry synthesis methods [4,[113][114][115][116].…”

Section: Synthesis Methods and Characterizationmentioning

confidence: 99%

Carbonate Hydroxyapatite - A Multifunctional Bioceramics with Non-Medical Applications

Adekanmi,

Garcia,

Lopez-Badillo

2024

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Carbonate hydroxyapatite is the common derivative of hydroxyapatite found in living systems. It is the building block of most hard tissues, including the teeth and bones. A vast majority of the applications of this versatile material focus on its biomedical applications, which is attributable to its closeness to biological apatites. Hydroxyapatite is a strong precursor to carbonate apatite in nature, and many experiments show that both are similar in a few respects. A significant divergence point is carbonate's obvious impact on its physicochemical properties and concomitant applications. The inclusion of carbonate ions into the lattice of hydroxyapatite results in morphological and physicochemical changes that vary with the method of synthesis and extent of substitution. The unique crystal structure, improved surface area, and porous morphology of carbonate hydroxyapatites also make it useful for catalysis and environmental remediation as adsorbents for heavy metals. This review briefly examines carbonate hydroxyapatite, its synthesis, its modification, and its characterization. It also highlights its biomedical applications while drawing attention to its non-medical potential.

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Section: Synthesis Methods and Characterizationmentioning

confidence: 99%

Carbonate Hydroxyapatite - A Multifunctional Bioceramics with Non-Medical Applications

Adekanmi,

Garcia,

Lopez-Badillo

2024

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“…The synthesis of stoichiometric hydroxyapatite (HAp) has been widely studied for decades (Araújo et al, 2020;Bonel et al, 1988;Brown et al, 1991;Greish, 2011;Kakiage et al, 2015), but only a few authors have reported results on the synthesis of calcium-rich HAp sintering or characteristics of HAp and CaO (Bengtsson et al, 2009;Kim et al, 2005;Omori et al, 2014;Raynaud et al, 2002).…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of non-stoichiometric hydroxyapatite nanoparticles using unmodified and modified starches

Perea

Silva

Freitas

et al. 2020

RSD

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Non-stoichiometric hydroxyapatite (HAp) presents an additional phase in its structure due to calcium or phosphorus excess, which can influence the material’s mechanical properties, as well as its bioactivity and biodegradability. While stoichiometric HAp, with calcium to phosphorus ratio (Ca/P) of 1.67, has been widely investigated, only a few studies have reported the synthesis of HAp with higher Ca/P ratio. In this work, non-stoichiometric HAp nanoparticles were synthesized using chemical precipitation method followed by a calcination protocol. In order to achieve better process control with chemical precipitation, starch, a natural additive, was applied. Three types of starch were selected for comparison: nonionic starch (NS), soluble starch (SS), and cationic starch (CS). Infrared spectroscopy and chemical analysis results confirmed the non-stoichiometric profile of the synthesized HAp, with a 1.98 Ca/P ratio. X-ray diffraction (XRD) results showed that HAp and calcium oxide (CaO) crystalline phases were obtained and no residual starch was detected. Rietveld refinements confirmed that, for all three types of starch, the content of crystalline HAp was greater than 96.5% and the unit cell volume was not affected. Scanning electron microscopy (SEM) showed agglomeration of particles. Nanoparticle tracking analysis (NTA) results demonstrated that the use of SS produced the smallest particles (approximately 60nm).

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Obtenção e caracterização de hidroxiapatita obtida por síntese hidrotermal e caracterização

Cited by 2 publications

References 19 publications

Carbonate Hydroxyapatite - A Multifunctional Bioceramics with Non-Medical Applications

Carbonate Hydroxyapatite - A Multifunctional Bioceramics with Non-Medical Applications

Synthesis and characterization of non-stoichiometric hydroxyapatite nanoparticles using unmodified and modified starches

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