Effects of magnetite incorporation in a chemically bonded phosphate ceramic

Alshaaer, Mazen; Al-Kafawein, Juma'a; Qazaq, Amjad Saleh; Issa, Khalil; Saffarini, G.

doi:10.1016/j.jpcs.2021.110531

Cited by 4 publications

(3 citation statements)

References 24 publications

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“…The results obtained in the present study indicate that the original shape of plate-like brushite crystals is preserved when the Ni/Ca ratio in the starting solution does not exceed 0.25 [39]. On the other hand, their size decreases due to the presence of Ni, as nickel inhibits crystal growth [20].…”

Section: Phase Evolution During the Precipitation Of Caxni1-xhpo4•nh2...supporting

confidence: 52%

“…Hence, the brushite encountered in mineralized tissues can be useful in medicine, especially in bone cement formulations [16]. It shows high stability in environments characterized by pH 4.0-6.5 and temperatures below 60 • C [17][18][19][20]. Moreover, as it is usually metastable at pH ~7.4, it can be quickly resorbed in the human body to aid in bone remodeling [21][22][23].…”

Section: Of 12mentioning

confidence: 99%

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The Impact of Full-Scale Substitution of Ca2+ with Ni2+ Ions on Brushite’s Crystal Structure and Phase Composition

et al. 2022

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Because the impact of the full-scale substitution of Ca2+ in brushite (CaHPO4·2H2O) with Ni2+ ions has never been systematically explored, it is the focus of this investigation, as it holds potential for use in CaxNi1−xHPO4·nH2O production. These biomaterials have many beneficial characteristics that can be modified to suit diverse applications, including bone tissue regeneration and pharmaceutics. For the present study, NaH2PO4·2H2O, Ca(NO3)2·4H2O, and Ni(NO3)2·6H2O were used in various molar concentrations to obtain the required starting solutions. Previous studies have shown that adding Ni ions in the initial solution below 20% results in the precipitation of monophasic brushite with slight changes in the crystal structure. However, this study confirms that when the Ni ions substitution increases to 20%, a mixture of phases from both brushite and hexaaquanickel(II) hydrogenphosphate monohydrate HNiP (Ni(H2O)6·HPO4·H2O) is formed. The results confirm that the full replacement (100%) of Ca ions by Ni ions results in a monophasic compound solely comprising orthorhombic HNiP nanocrystals. Therefore, a novel technique of HNiP synthesis using the precipitation method is introduced in this research work. These materials are subsequently analyzed utilizing powder X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), thermogravimetric analysis (TGA), and scanning electron microscopy (SEM). The obtained results confirm that the material microstructure is controlled by the Ni/Ca ratio in the starting solution and can be modified to obtain the desired characteristics of phases and crystals.

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Section: Phase Evolution During the Precipitation Of Caxni1-xhpo4•nh2...supporting

confidence: 52%

Section: Of 12mentioning

confidence: 99%

The Impact of Full-Scale Substitution of Ca2+ with Ni2+ Ions on Brushite’s Crystal Structure and Phase Composition

et al. 2022

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“…Several phases may develop from a calcium phosphate solution that is supersaturated. These occur in the following order of reduced solubility: amorphous calcium phosphate (ACP) or hydroxyapatite (Ca 10 (PO 4 ) 6 ·(OH) 2 , HA), brushite (CaHPO 4 ·2H 2 O, DCPD), monetite (CaHPO 4 , DCPA) [ 13 , 16 ], β-tricalcium phosphate (Ca 3 (PO 4 ) 2 , (β-TCP)) [ 19 , 20 , 21 ], and octacalcium phosphate (Ca 8 H 2 (PO 4 ) 6 ·5H 2 O, OCP) [ 8 , 21 , 22 ]. The solubilities and crystalline structures of the individual phases differ noticeably from one another.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Full-Scale Exchange of Ca2+ with Zn2+ Ions on the Crystal Structure of Brushite and Its Phase Composition

Alanazi,

Abdulaziz,

Alyami

et al. 2023

Biomimetics

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This study was carried out to investigate the effect of a complete exchange of Ca2+ with Zn2+ ions on the structure of brushite (CaHPO4·2H2O), which might be advantageous in the production process of CaxZn1−xHPO4·nH2O. To acquire the starting solutions needed for the current study, (NH4)2HPO4, Ca(NO3)2·4H2O, and Zn(NO3)2·6H2O were utilized in several molar concentrations. The findings indicate that Ca is partly substituted by Zn when the Zn/Ca molar ratio is below 0.25 and that Zn doping hinders the crystallization of brushite. A continued increase in the Zn/Ca molar ratio to 1 (at which point the supersaturation of the Zn solution rises) led to a biphasic compound of monoclinic brushite and parascholzite precipitate. Elevating the Zn/Ca molar ratio to 1.5 resulted in a precipitate of a parascholzite-like mineral. Finally, increasing the Zn/Ca molar ratio to 4 and above resulted in the formation of the hopeite mineral. Future biomaterial production with specific and bespoke characteristics can be achieved by adjusting the Zn/Ca ratio in the starting solution. It Rhas been established that the Zn/Ca ratio in the starting solution can be adjusted to obtain minerals with specific compositions. Thus, new synthesis methods for parascholzite and hopeite were introduced for the first time in this manuscript.

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Synthesis, characterization and antimicrobial analysis of metal-doped (Zn2+ and Ag+) brushite powder for bone regeneration

Aqib,

Alomar,

Anwar

et al. 2024

Materials Chemistry and Physics

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Effects of magnetite incorporation in a chemically bonded phosphate ceramic

Cited by 4 publications

References 24 publications

The Impact of Full-Scale Substitution of Ca2+ with Ni2+ Ions on Brushite’s Crystal Structure and Phase Composition

The Impact of Full-Scale Substitution of Ca2+ with Ni2+ Ions on Brushite’s Crystal Structure and Phase Composition

The Effect of Full-Scale Exchange of Ca2+ with Zn2+ Ions on the Crystal Structure of Brushite and Its Phase Composition

Synthesis, characterization and antimicrobial analysis of metal-doped (Zn2+ and Ag+) brushite powder for bone regeneration

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