Hydroxyapatite-nanosilver composites with plasmonic properties for application in surface-enhanced Raman spectroscopy

Solovyeva, Elena V.; Odintsova, Olga V.; Svinko, Vasilisa O.; Makeeva, Daria V.; Данилов, Д. В.

doi:10.1016/j.mtcomm.2023.105908

Cited by 7 publications

(3 citation statements)

References 45 publications

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“…The functional bands of (PO 4 ) 3- , hydroxyl (OH - ) appeared at 463, 593, and 606 cm −1 , which correlates to the ν 2 and ν 4 O–P–O. The bands that appeared at 966, 1045, and 1096 cm −1 correspond to v 1 symmetric and v 3 asymmetric stretching modes of P-O 47 , 48 . It has been found that certain organic materials exhibit bands at 1555 and 1650 cm −1 , which can be eliminated through the process of annealing 49 , 50 .…”

Section: Raman Spectroscopy Resultsmentioning

confidence: 96%

Correlation between positron annihilation lifetime and photoluminescence measurements for calcined Hydroxyapatite

Atta,

Mahmoud,

Salim

et al. 2024

Sci Rep

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Hydroxyapatite (HAp) Ca10(PO4)6(OH)2 is a compound that has stable chemical properties, composition, and an affinity for human bone. As a result, it can be used in odontology, cancer treatment, and orthopedic grafts to repair damaged bone. To produce calcined HAp at 600 °C with different pH values, a wet chemical precipitation method was employed. All synthesized HAp samples were characterized by X-ray diffraction (XRD), Raman spectroscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier-transform infrared spectroscopy (FTIR), photoluminescence (PL), Zeta potential, and positron annihilation lifetime spectroscopy (PALS). The XRD results revealed that all calcined HAp samples were formed in a hexagonal structure with a preferred (002) orientation at different pH values. The crystal size of the samples was determined using the Scherrer equation, which ranged from 16 to 25 nm. The SEM and TEM results showed that the morphology of the samples varied from nanorods to nanospheres and rice-like structures depending on the pH value of the sample. The PL measurements indicated that the blue and green emission peaks of HAp were due to defects (bulk, surface, and interface) in the samples, which created additional energy levels within the band gap. According to Zeta potential measurements, the charge carrier changed from a positive to negative value, ranging from 3.94 mV to − 2.95 mV. PALS was used to understand the relationship between the defects and the photoluminescence (PL) properties of HAp. Our results suggest that HAp nanoparticles have excellent potential for developing non-toxic biomedical and optical devices for phototherapy.

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Section: Raman Spectroscopy Resultsmentioning

confidence: 96%

Correlation between positron annihilation lifetime and photoluminescence measurements for calcined Hydroxyapatite

Atta,

Mahmoud,

Salim

et al. 2024

Sci Rep

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show abstract

“…5,6 LSPR occurs when molecules are in close proximity to nanostructures made of noble metals, which causes the Raman signal to be amplified. 7,8 SERS uses the electromagnetic and chemical phenomena that occur when analyte molecules are near nanostructures to amplify Raman signals. 9–16…”

Section: Introductionmentioning

confidence: 99%

“…5,6 LSPR occurs when molecules are in close proximity to nanostructures made of noble metals, which causes the Raman signal to be amplied. 7,8 SERS uses the electromagnetic and chemical phenomena that occur when analyte molecules are near nanostructures to amplify Raman signals. [9][10][11][12][13][14][15][16] Gold nanoparticles (AuNPs) have been widely employed in SERS substrates because of their exceptional plasmonic properties, high chemical stability, and ease of functionalization.…”

Section: Introductionmentioning

confidence: 99%

Polyacrylonitrile as a versatile matrix for gold nanoparticle-based SERS substrates

Sharma,

Kumar,

Yadav

2024

Nanoscale Adv.

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Atmospheric plasma spray coating of antibacterial nano silver-hydroxyapatite on titanium surface for biomedical applications

Olgun,

Çetin,

Hoş

et al. 2023

Composite Interfaces

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Hydroxyapatite-nanosilver composites with plasmonic properties for application in surface-enhanced Raman spectroscopy

Cited by 7 publications

References 45 publications

Correlation between positron annihilation lifetime and photoluminescence measurements for calcined Hydroxyapatite

Correlation between positron annihilation lifetime and photoluminescence measurements for calcined Hydroxyapatite

Polyacrylonitrile as a versatile matrix for gold nanoparticle-based SERS substrates

Atmospheric plasma spray coating of antibacterial nano silver-hydroxyapatite on titanium surface for biomedical applications

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