Mesoporous hydroxyapatite: Synthesis in molecular self-assembly and adsorption properties

Ma, Ke; Cui, Haiwei; Zhou, Annan; Wu, Haiyuan; Dong, Xiaolong; Zu, Fenghua; Yi, Jianjun; Wang, Runwei; Xu, Qinghong

doi:10.1016/j.micromeso.2021.111164

Cited by 23 publications

(9 citation statements)

References 45 publications

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“…The binding energy of P2p shifted from 132.8 to 133.1 eV (Fig. 9d), indicating that Ca in Hap particles might be replaced in-situ by UO 2 2+ to form the P-U bonds, which resulted in the increase of the extranuclear electron cloud density around P atoms (Ma et al 2021). This conclusion was confirmed by the shift of the binding energy of Ca2p.…”

Section: Xpsmentioning

confidence: 65%

Design of a renewable hydroxyapatite-biocarbon composite for the removal of uranium(VI) with high-efficiency adsorption performance

Xiong

Ding

Xie

et al. 2022

Biochar

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The hydroxyapatite-loaded swine manure derived-biocarbon was successfully prepared by pyrolysis method for the adsorption of uranium(VI). The results of the adsorption experiments displayed that the adsorption behaviors for uranium(VI) of biocarbon did almost not depend on the interfering ions except Al3+, Ca2+ and CO32−, showing the high selectivity of the composites for uranium(VI). The maximum static and dynamic removal capacity of the hydroxyapatite-biocarbon composites to uranium(VI) were 834.8 and 782.8 mg/g (pH = 3, m/V = 0.1 g/L and T = 298 K), far exceeding other reported biocarbon and hydroxyapatite materials, which indicated that the hydroxyapatite-biocarbon composites possessed an application potential in adsorption. After five cycles of adsorption–desorption processes, the removal efficiency of the hydroxyapatite-biocarbon composite for uranium(VI) was 93.2% (Ci = 5 mg/L, pH = 3, m/V = 0.1 g/L and T = 298 K), revealing that the composite had excellent stability and reusability. Moreover, the capture mechanisms of the hydroxyapatite-biocarbon composite for uranium(VI) included ion exchange and complexation, which was ascribed to the ample active adsorption sites (–OH and PO43−). Therefore, the hydroxyapatite-loaded swine manure derived-biocarbon would be a potential material to effectually separate uranium(VI) from solution. Graphical abstract

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Section: Xpsmentioning

confidence: 65%

Design of a renewable hydroxyapatite-biocarbon composite for the removal of uranium(VI) with high-efficiency adsorption performance

Xiong

Ding

Xie

et al. 2022

Biochar

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“…Accordingly, the reduction of total surface area and pore volume from 367.71 m 2 /g and 2.08 cm 3 /g in Meso-SiHAp to 334.49 m 2 /g and 1.72 cm 3 /g in Meso-SiHAp@MPN confirmed that the network of Mg-phenolic was successfully established. Furthermore, compared to mesoporous bioactive glass, MSNs, and mesoporous HA reported in the literature, the resulting Meso-SiHAp@MPN has a higher surface area and pore volume. Therefore, body fluids can potentially pass through the mesoporous channels and induce HA mineralization, cell adhesion, cell growth, and extracellular junctions, which increase the bioactivity and biocompatibility of Meso-SiHAp@MPN.…”

Section: Resultsmentioning

confidence: 93%

Nanocore–Shell Bone Filler Contained Mesoporous Silica Modified with Hydroxyapatite Precursors; Wrapped in a Natural Metal–Phenolic Network

Bahadorani,

Hadadzadeh,

Mirahmadi-Zare

et al. 2023

Langmuir

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Various therapeutic strategies have been developed to address bone diseases caused by aging society and skeletal defects caused by trauma or accidental events. One such approach is using bone fillers, such as hydroxyapatite (HA) and bioactive glasses. Although they have provided effective osteogenesis, infection and inflammation due to the surgical procedure and uncontrolled ion release can hinder the efficiency of bone regeneration. In response to these challenges, immobilizing a neutral metal−phenolic network on the surface of osteoconductive nanoparticles would be the master key to achieving a gradual, controlled release during the mineralization period and reducing infection and inflammation through biological pathways. In this regard, a mesoporous silica nanocomposite modified by an HA precursor was synthesized to enhance bone regeneration. In addition, to improve the therapeutic effects, its surface was wrapped with a magnesium−phenolic network made from pomegranate extract, which can simultaneously produce anti-inflammatory and antibacterial effects. The obtained core−shell nanocomposite was characterized by its physicochemical properties, biocompatibility, and bioactivity. The in vitro studies revealed that the synthesized nanocomposite exhibits higher osteogenic activity than the control groups, as confirmed by alizarin red staining. Moreover, the nanocomposite maintained low toxicity as measured by the 3-(4,5dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium (MTS) assay and increased antibacterial activity against Staphylococcus aureus and Escherichia coli compared with the control groups. Therefore, this research presents a promising strategy for bone regeneration, combining the advantages of mesoporous silica nanocomposite modified by an HA precursor with the beneficial effects of a magnesium−phenolic network.

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“…HAp presented an isoelectric point (IEP = ζ 0 ) at pH 5.37, a pH of maximum stability greater than 8.17, and a maximum pZ of −44.7 ± 2.0, as shown in Figure A. The results agree with previous studies indicating an IEP at pH 5.5 and a pZ less than −30 mV in deionized water in a range of pH 5.00 to 9.03 . The surface charge of HAp is strongly determined by the pH of the medium and the degree of protonation of a specific apatite surface .…”

Section: Resultsmentioning

confidence: 99%

Alumina–Hydroxyapatite Millimetric Spheres for Cadmium(II) Removal in Aqueous Medium

Silva-Holguín,

Medellín-Castillo,

Zaragoza-Contreras

et al. 2023

ACS Omega

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Heavy metals can act as selective agents in the development and proliferation of antibiotic-resistant bacteria through a process called coselection. In the year 2050, an estimated 10 million deaths will be caused by antibiotic-resistant bacteria; therefore, the presence of heavy metals in bodies of water represents an environmental and sanitary threat that requires efficient treatment processes and/or materials for their removal. In the present study, the effect of the hydroxyapatite coating on the adsorbent capacity of cadmium in alumina spheres was evaluated. The hydroxyapatite coating on the alumina sphere increased the surface area from 0.66 to 0.96 m2/g and the number of acid sites from 0.064 to 0.306 meq/g and displaced the IEP of hydroxyapatite from 5.37 to 4.2, increasing the Cd2+ adsorbing capacity from 59.87 mg/g to 89.37 mg/g and promoting adsorption by surface complexation. Alumina-hydroxyapatite spheres stand out for their improved adsorbent properties and easy handling, which positioned this material as a potential alternative in adsorption processes.

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Mesoporous hydroxyapatite: Synthesis in molecular self-assembly and adsorption properties

Cited by 23 publications

References 45 publications

Design of a renewable hydroxyapatite-biocarbon composite for the removal of uranium(VI) with high-efficiency adsorption performance

Design of a renewable hydroxyapatite-biocarbon composite for the removal of uranium(VI) with high-efficiency adsorption performance

Nanocore–Shell Bone Filler Contained Mesoporous Silica Modified with Hydroxyapatite Precursors; Wrapped in a Natural Metal–Phenolic Network

Alumina–Hydroxyapatite Millimetric Spheres for Cadmium(II) Removal in Aqueous Medium

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