Tuning the compositional configuration of hydroxyapatite modified with vanadium ions including thermal stability and antibacterial properties

Jahdaly, Badreah A. Al; Khalil, Ahmed M.; Ahmed, M.K.; Shoueir, Kamel R.

doi:10.1016/j.molstruc.2021.130713

Cited by 17 publications

(11 citation statements)

References 62 publications

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“…The survey scan has a wide range and the peaks of 347.8 and 351. 35 eV are observed and they may refer to Ca which can confirm the HAP chemical structure. Table 1 shows the numerical XPS scan and the assignment.…”

Section: Xps Spectrasupporting

confidence: 58%

“…In addition, porosity, mechanical properties, and antibacterial activity were enhanced. 34,35 Therefore, the addition of vanadium ions can affect directly the biological response. It can be inferred that taking into consideration the interaction of vanadium in the biological environment and the antibacterial properties of thiourea derivatives, the combination of these can facilitate the achievement of novel, enhanced antimicrobial agents.…”

Section: Introductionmentioning

confidence: 99%

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Controlled compositions of tellurium/vanadium co-doped into hydroxyapatite/ε-polycaprolactone for wound healing applications

2022

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Section: Xps Spectrasupporting

confidence: 58%

Section: Introductionmentioning

confidence: 99%

Controlled compositions of tellurium/vanadium co-doped into hydroxyapatite/ε-polycaprolactone for wound healing applications

2022

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“…The density of the crystal, as calculated from the XRD spectra, also shows augmentation from 3.15 g/cm 3 for pure HAP to 3.27 g/cm 3 for x = 3. Similar results have also been reported by AlJahdaly et al for hydroxyapatite modified with vanadium ions used as the antibacterial material.…”

Section: Resultsmentioning

confidence: 91%

“…The HAP spectrum show characteristic peaks corresponding to vibrations arising due to the presence of phosphate groups. The peaks at 1043 cm –1 arise due to the stretching vibrations ( v 3 ), and 568 and 602 cm –1 arise due to the bending vibrations of the phosphate group ( v 4 ). ,, The O–P–O stretching vibration was recorded at 963 cm –1 . The peaks at 635 and 3573 cm –1 are attributed to the stretching vibration arising due to the hydroxyl group.…”

Section: Resultsmentioning

confidence: 99%

“…The catalytic reactivity of HAP is sensitive to their bulk composition. Furthermore, HAP also exhibited redox properties by modifying with redox heteroatoms. ,, It is foreseeable that loading vanadium oxide on the surface of HAP as a catalyst for HMF oxidation may be active, but the problem of vanadium leaching cannot be solved. It is noteworthy that in addition to the deposition of nanoparticles on the surface of HAP, vanadium can be doped into the framework of HAP, which may be a promising strategy to prevent vanadium leaching.…”

Section: Introductionmentioning

confidence: 99%

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Exploiting an Efficient and Stable Catalyst for the Selective Oxidation of 5-Hydroxymethylfurfural to 2,5-Diformylfuran by Incorporating Vanadium in the Framework of Hydroxyapatite

Patria

Kumar

Luo

et al. 2022

ACS Sustainable Chem. Eng.

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Hydroxyapatite displays immense potential in catalysis because of its properties to form doped single and multiphasic systems. In the present study, vanadium-incorporated hydroxyapatite was investigated for aerobic oxidation of 5-hydroxymethylfurfural to 2,5-diformylfuran. The amount of vanadium precursor and the pH in catalyst synthesis were significant factors in defining the catalytic properties of V-HAP. The morphologies and structures of the catalysts were well studied. Field emission scanning electron microscopy revealed different morphologies of the catalyst with varying amounts of vanadium and pH, suggesting that both these factors play a critical role in determining the catalytic properties. Through X-ray diffraction spectra, the incorporation of vanadium ions into the HAP framework by replacing phosphate ions was confirmed by the augmentation of lattice parameters and unit cell volume. The vanadium amount corresponding to x = 3 and pH 11 for the synthesis of the catalyst displayed good catalytic efficiency for HMF conversion. To further enhance the performance of the synthesized catalyst, the reaction parameters such as the temperature of reaction and catalyst loading were optimized. Under optimum reaction conditions, 78% HMF conversion with 63 and 81% DFF yield and selectivity, respectively, was observed. V-HAP (x = 3) was highly stable in nature and did not show a decrease in activity during experimental cycles, thereby showing that the incorporated vanadium did not leach out and that the catalyst was recyclable, which was also confirmed by energy-dispersive X-ray spectroscopy results. V-HAP (x = 3) was also compared with V2O5-HAP and was found to have superior catalytic properties as compared to the latter. This study contributes to the development of green and stable catalysts for biomass conversion.

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Nanocomposites based on hydroxyapatite/lithium oxide and graphene oxide nanosheets for medical applications

et al. 2022

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Metal-based bioceramics are developed to imitate the natural bones to be used as bone substitutes. Different nanocomposites are synthesized using hydroxyapatite (HAP), Li2O and GO to fabricate HAP, Li2O, HAP/Li2O, HAP/GO and HAP/Li2O/GO. XRD shows the change in crystal structure upon adding the three nanocomposites to each other. Besides, FTIR and XPS explain the functional groups of the compositions and analyze their surface composition. The TEM explains the morphological changes for particles dimensions of HAP/Li2O/GO showing a length of 20 nm for HAP and a size of 6 nm for Li2O sphere. In addition, SEM graphs explained the enhancement of HAP/Li2O/GO porosity showing a particle size of 0.3–0.4 µm and length of 0.8 µm. Further, roughness parameters are improved upon adding HAP and Li2O to GO, showing a roughness average value of 57.80 nm. Moreover, the cell viability of HAP/Li2O/GO is examined and shows a maximum value of 97.4 ± 1.2%. In addition, the antibacterial activity exhibited by HAP/Li2O/GO against (Escherichia coli = E. coli) and (Staphylococcus aureus = S. aureus) showed an inhibition zone of 13.4 ± 1.2 mm 12.3 ± 1.3 mm. Adding HAP presents an improvement in surface roughness as well as cell viability and antibacterial activity. Besides, the microhardness has been improved from 2.6 ± 0.1 GPa to 3.1 ± 0.2 for pure HAP and HAP/Li2O/GO, respectively. Therefore, combining HAP, GO and Li2O results in a nanocomposite of enhanced biocompatibility and can be suggested for bone biomedical applications.

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Tuning the compositional configuration of hydroxyapatite modified with vanadium ions including thermal stability and antibacterial properties

Cited by 17 publications

References 62 publications

Controlled compositions of tellurium/vanadium co-doped into hydroxyapatite/ε-polycaprolactone for wound healing applications

Controlled compositions of tellurium/vanadium co-doped into hydroxyapatite/ε-polycaprolactone for wound healing applications

Exploiting an Efficient and Stable Catalyst for the Selective Oxidation of 5-Hydroxymethylfurfural to 2,5-Diformylfuran by Incorporating Vanadium in the Framework of Hydroxyapatite

Nanocomposites based on hydroxyapatite/lithium oxide and graphene oxide nanosheets for medical applications

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