Stability-limited ion-exchange of calcium with zinc in biomimetic hydroxyapatite

Rijt, Mark M. J. van; Nooteboom, Sjoerd W.; Weijden, Arno van der; Noorduin, Wim L.; With, G. de

doi:10.1016/j.matdes.2021.109846

Cited by 20 publications

(7 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…3. The images re ect the white colored-nature of HAp powders, which is a typical color of HAp powder [24][25][26][27][28][29][30][31][32][33]. It is also important to note that the SEM images re ected irregular morphology.…”

Section: Sem/ Eds Analysismentioning

confidence: 94%

Mechanical Reliability and Modeling of Hydroxyapatite Scaffold

Abifarin¹

2021

Preprint

View full text Add to dashboard Cite

Significant contributions on the improvement of the mechanical properties of hydroxyapatite (HAp) have been widely reported. However, failure analysis (mechanical reliability) and modeling are missing. This article filled the gap by conducting Two-parameter Weibull distribution assisted by modeling to investigate the mechanical reliability of HAp. The employed HAp was characterized under SEM/EDS analysis. The results revealed the characteristics of HAp and also the nature of the synthesis route employed through its irregular morphology. The Two-parameter Weibull distribution analysis was conducted on the hardness and compressive strength of HAp scaffold. The characteristic hardness and compressive strength, coupled with their corresponding bounds, failure rates, and correlation coefficients were been presented. The Weibull analysis with the assistance of modeling revealed HAp fabricated under 10 KN compaction load and sintered at 1100 oC as the most reliable sample under hardness condition, while HAp fabricated under 15 KN compaction load and sintered at 1000 oC gave the most reliable characteristic under compression. However, 15 KN compaction load and 1100 oC sintering temperature showed the best reliability on the overall mechanical (hardness and compressive strength) reliability. Future study is recommended on the reliability of HAp scaffolds considering other mechanical properties that are essential for biomedical application.

show abstract

Section: Sem/ Eds Analysismentioning

confidence: 94%

Mechanical Reliability and Modeling of Hydroxyapatite Scaffold

Abifarin¹

2021

Preprint

View full text Add to dashboard Cite

show abstract

“…Hydroxyapatite (HAp, Ca 10 (PO 4 ) 6 (OH) 2 ), a kind of alkalescent phosphate salt, which accounts for about 60% of human bone weight [1] . Meanwhile, HAp exhibits high ion-exchange capacity and strong surface adsorption ability because of its surface groups and special chemical constitution [2] . Therefore, HAp is also a promising adsorbing material for highcapacity drug loading [3] , protein purification [4] , inorganic and organic pollutants removal from water [5] .…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, HAp is also a promising adsorbing material for highcapacity drug loading [3] , protein purification [4] , inorganic and organic pollutants removal from water [5] . In recent researches, the microstructure of HAp has attracted more and more interest because it could affect the adsorption performances of HAp [2][3][4][5] . Up to present, abundant HAp nanomaterials with distinct morphologies have been synthesized, such as nanosheets [6] , nanoparticles [7], nanorods [8] and nano needles [9] , and their adsorption performances have been also investigated.…”

Section: Introductionmentioning

confidence: 99%

Facile preparation, characterization, and adsorption performances of hydroxyapatite nanorods

An,

Gu,

et al. 2024

Ninth International Conference on Energy Materials and Electrical Engineering (ICEMEE 2023)

View full text Add to dashboard Cite

Pure hydroxyapatite (HAp) nanorods have been synthesized successfully by coprecipitation method with only three requisite cheap reactants. The product was characterized by XRD, FTIR and SEM. The adsorption performances of HAp nanorods were performed by measuring the removal of Direct Red 28 (DR 28) in water solution with a serials of adsorption tests, and the adsorption isotherms were also studied. The results showed that the solution pH, contact time and initial concentration of dye solution played critical roles in adsorption of DR 28 onto HAp nanorods. Furthermore, the maximum adsorption capacity was calculated to be 166.94 mg/g, suggesting that the HAp nanorods demonstrated strong ability to remove DR 28 from aqueous solution.

show abstract

“…[19] Various transition metal cations, which show potential as catalytic active centers, can be readily accommodated into the apatite framework based on the large cation exchange ability of HAP. [20][21][22] Ca 2 + can be replaced by Fe 2 + , Pb 2 + and other cations, [23] PO 4 3À can be replaced by VO 4 3À , CrO 4 3À , OH can be replaced by F À , Br À , Cl À . After a replacement has been performed, the hexagonal crystal system of hydroxyapatite is not destroyed.…”

Section: Introductionmentioning

confidence: 99%

Defect‐induced Synthesis of Highly Dispersed Hydroxyapatite‐Supported Vanadium Oxide for the Oxidative Dehydrogenation of Cyclohexane

Song,

Zhou,

et al. 2023

ChemCatChem

View full text Add to dashboard Cite

Hydroxyapatite (HAP) contains abundant defect sites and easily releases hydroxyl groups to produce new vacancies under calcination at high temperature. The highly dispersed VOx/HAP catalyst was prepared by an impregnation method using these defects as inducement. VOx species with different structures were analysed by XRD, XPS, H2‐TPR, Raman and UV–vis spectroscopy. At low calcination temperatures (500 °C and 600 °C), the V species are mainly V2O5 crystals. At high calcination temperatures (above 700 °C), VOx on the HAP surface fills these defect sites and strongly interacts with HAP to form Ca‐O‐V or P‐O‐V bands. These scattered defects improved the dispersion of V species. These highly dispersed VOx/HAP catalysts were used for oxidative dehydrogenation (ODH) of cyclohexane to cyclohexene. The highly dispersed VOx/HAP catalyst showed a high selectivity for cyclohexene, and the selectivity reached 48.2% when the conversion of cyclohexane was 13.1% at 410 °C.

show abstract

Stability-limited ion-exchange of calcium with zinc in biomimetic hydroxyapatite

Cited by 20 publications

References 35 publications

Mechanical Reliability and Modeling of Hydroxyapatite Scaffold

Mechanical Reliability and Modeling of Hydroxyapatite Scaffold

Facile preparation, characterization, and adsorption performances of hydroxyapatite nanorods

Defect‐induced Synthesis of Highly Dispersed Hydroxyapatite‐Supported Vanadium Oxide for the Oxidative Dehydrogenation of Cyclohexane

Contact Info

Product

Resources

About