Chlorapatite Derived from Fish Scales

Cavalcante, Luyara de Almeida; Ribeiro, Laís Sibaldo; Takeno, Mitsuo Lopes; Aum, Pedro Tupã Pandava; Aum, Yanne Katiussy Pereira Gurgel; Andrade, Jean Carlos Silva

doi:10.3390/ma13051129

Cited by 15 publications

(5 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Most of these holes are filled with stick-shaped ClA particles parallel to the surface plane. This ClA particle morphology has been previously observed after the treatment of ClA at high temperatures [35,36].…”

Section: Figure 10 Sem Analyses Of Laser-induced Circular Patterns Produced With Same Powder Feedstock Blend (Ha_10gsupporting

confidence: 80%

Powder bed selective laser process (sintering/melting) applied to tailored calcium phosphate-based powders

Navarrete-Segado¹,

Francès²,

Tourbin³

et al. 2021

Preprint

View full text Add to dashboard Cite

This paper focuses on the tailoring of calcium phosphate powders for their use as powder bed selective laser process feedstock. Hydroxyapatite and chlorapatite were used as starting powders for the preparation of different blends through the addition of graphite as a laser absorptance additive. A methodical study was conducted to compare the processing windows of the blends containing different amounts of graphite through the laser patterning of circular samples. It was found that the addition of graphite increases the process window of the powder blends being the powder without additive non processable. Hydroxyapatite showed a clear phase transition (decreased when using higher volumetric energy density) into other calcium phosphate phases while chlorapatite was demonstrated to be thermally stable during the whole process (examined through X-ray diffraction and vibrational spectroscopies). In parallel, the study evaluating the powder blend composed of hydroxyapatite and graphite for the production of solid and complex parts was carried out although it required long printing times. The productivity of the process was improved by modification of printing parameters. Then, a series of solid samples were produced for the analysis of the microstructure and mechanical properties. High interconnected porosity was observed in the samples which could improve the bioactivity of the bioceramic scaffolds. A post-treatment of the parts increased their proportion in the hydroxyapatite phase and their mechanical properties. These results are expected to contribute to the application of powder bed selective laser processing of calcium phosphates powders toward bone tissue engineering.

show abstract

Section: Figure 10 Sem Analyses Of Laser-induced Circular Patterns Produced With Same Powder Feedstock Blend (Ha_10gsupporting

confidence: 80%

Powder bed selective laser process (sintering/melting) applied to tailored calcium phosphate-based powders

Navarrete-Segado¹,

Francès²,

Tourbin³

et al. 2021

Preprint

View full text Add to dashboard Cite

show abstract

“…The wide band at 3468 cm -1 and the narrow one at 1639 cm -1 are associated with the water [23]. The bands of 1053, 602 and 569 cm -1 are assigned to the phosphate group of the apatite structure [24,25]. The band centered at 1385 cm -1 can be related to the carbonate group [25].…”

Section: Ftir Measurement Resultsmentioning

confidence: 94%

Exploring Electronic and Structural Properties of Titanium-Doped Chlorapatite: A Theoretical and Experimental Investigation

KESER,

ATEŞ,

BULUT

et al. 2023

Journal of Physical Chemistry and Functional Materials

View full text Add to dashboard Cite

The apatite family stands as a pivotal class of inorganic compounds with diverse elemental components, playing a crucial role in biological, environmental, and geological contexts. Among these, chlorapatite (ClAp) emerges as a significant member, featuring a hexagonal structure with the space group P63/m. In this theoretical study, we delve into the unexplored realm of Ti-doped ClAp structures, investigating their electronic and structural characteristics for the first time. Motivated by the potential impact of titanium (Ti) doping on electronic and optical properties, we employ density functional theory (DFT) principles to perform band structure calculations. The electronic band structure is explored comprehensively, shedding light on the energy distribution for electrons as a function of momentum. Our calculations reveal that un-doped ClAp exhibits an insulating nature, as indicated by a calculated band gap of approximately 4.947 eV. The theoretical volume parameter closely matches experimental observations, validating the reliability of our computational model. Introducing Ti as a dopant in 1.2TiClAp results in a discernible increase in the band gap to approximately 5.339 eV. The theoretical volume parameter exhibits excellent agreement with experimental data, emphasizing the precision of our calculations. For 2.4TiClAp, the band gap remains stable at around 5.344 eV, while the theoretical volume parameter stands at 0.5260 nm3. Our systematic exploration of Ti-doped ClAp underscores the tunability of electronic properties, signifying potential applications across diverse fields. The reliability of theoretical calculations is further affirmed by the consistent alignment with experimental parameters. These findings contribute significantly to our fundamental understanding of Ti-doped ClAp, providing crucial insights for material design and optimization. Ongoing collaborative efforts between theoretical and experimental approaches are essential for a comprehensive assessment of these complex materials.

show abstract

“…Los iones del fosfato fueron substituidos por los iones del carbonato, así la relación de Ca/P se incrementa. Esto corrobora investigaciones anteriores, demostrando que la ClAp obtenida es más soluble que la HAp y el ClAp puro, Ca10(PO4)6Cl2, tiene la relación Ca/Cl de 5, lo que indica que a pH5 y pH6, se obtiene la mayor cantidad de cloroapatita (de Almeida Cavalcante et al, 2020;Ito et al, 2017).…”

Section: Discussionunclassified

El pH como parámetro en la síntesis de hidroxiapatita y cloroapatita a partir del método hidrotermal asistido por microondas

Villaseñor-Cerón

Reyes-Valderrama

López-Ortiz

et al. 2021

ICBI

View full text Add to dashboard Cite

En el presente trabajo se realiza la síntesis de apatitas, a través del método hidrotermal asistido por microondas, variando el pH en 5, 6, 7, 8, 9 y 10. La caracterización fisicoquímica y estructural se realizó por las técnicas: MEB-EDS, DRX y FTIR, determinando una tamaño de cristal de 8 a 10 nm en función del pH; se observó la formación de aglomerados longitud, constituidos por fibras de entre 43.4 a 108.5 nm de diámetro y 412.4 a 1603.8 nm de longitud, así mismo se determina la presencia de planos cristalográficos característicos de HAp y ClAp . Además, se identifican los modos vibracionales pertenecientes a ambas estructuras y una elongación en la banda del grupo OH-, atribuida a la interacción entre el grupo OH- de la HAp y los iones de Cl- de la ClAp. Los resultados obtenidos contribuyen a establecer el efecto del pH en el tamaño de cristal y de partícula para la síntesis de HAp y ClAp

show abstract

Chlorapatite Derived from Fish Scales

Cited by 15 publications

References 48 publications

Powder bed selective laser process (sintering/melting) applied to tailored calcium phosphate-based powders

Powder bed selective laser process (sintering/melting) applied to tailored calcium phosphate-based powders

Exploring Electronic and Structural Properties of Titanium-Doped Chlorapatite: A Theoretical and Experimental Investigation

El pH como parámetro en la síntesis de hidroxiapatita y cloroapatita a partir del método hidrotermal asistido por microondas

Contact Info

Product

Resources

About