Depth profiles of Ag nanoparticles in silicate glass

Yang, Xiaogang; Li, Weijie; Li, Zhihui; Wei, Yanan; Huang, Wenhai

doi:10.1007/s00339-007-4304-2

Cited by 17 publications

(8 citation statements)

References 6 publications

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“…Through the information observed in optical absorption spectroscopy and transmission electron microscopy, we demonstrate the formation of Ag and Cu bimetallic nanoparticles in the glass matrix. To the best of our knowledge, bimetallic nanoparticles/silicate glass composites prepared by a two-step ion-exchange were scarcely reported though many investigations have been done systematically in Ag or Cu doped silicate-glass [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

In situ synthesis of Ag–Cu bimetallic nanoparticles in silicate glass by a two-step ion-exchange route

Xiang

Huang

et al. 2011

Journal of Non-Crystalline Solids

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Section: Introductionmentioning

confidence: 99%

In situ synthesis of Ag–Cu bimetallic nanoparticles in silicate glass by a two-step ion-exchange route

Xiang

Huang

et al. 2011

Journal of Non-Crystalline Solids

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“…). The silver particles radius γ can be calculated as follows:

γ = \frac{A ν_{F}}{2 π c (|, \frac{Δ λ}{λ_{p}^{2}})}

where A is the line‐broadening constant (1.2),

ν_{F}

is the Fermi velocity of the free electrons (1.4 × 10 6 m/s for silver), c is the velocity of light (3.0 × 10 8 m/s),

λ_{p}

is the SPR wavelength, and Δλ is the full width at half maximum of the SPR peak. The calculated radius of 1Ag, 3Ag, and 5Ag was 4.8, 6.7, and 5.1 nm, respectively (that is, diameter of 9.6, 13.4, and 10.2 nm, respectively).…”

Section: Discussionmentioning

confidence: 99%

Structure, dissolution behavior, cytocompatibility, and antibacterial activity of silver‐containing calcium phosphate invert glasses

Lee

Nakano

Kasuga

2017

J Biomedical Materials Res

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Novel CaO-P 2 O 5 -Nb 2 O 5 -Ag 2 O invert glasses with substitution Ag 2 O for Nb 2 O 5 were successfully prepared using a melt-quenching method. Ag 2 O in the glasses act as a network modifier oxide, playing the same role as Na 2 O, which breaks the phosphate chains. Analysis of the ultraviolet-visible absorption spectra of the glasses showed that the glass matrix contained ionic silver species and silver nanoparticles. Approximately 0.05 mM of Nb 51 ions released from the glasses, which would be expected to stimulate osteoblast differentiation. A glass containing 1 mol % Ag 2 O showed a linear increase in the releasing amount of Ag 1 ions with increasing soaking time, whereas glasses containing 3-5 mol % Ag 2 O showed Ag 1 ion concentrations of around 13 lM at day 3, and then maintained similar values until day 7. When the solution was replaced with fresh solution every 2 days, the Ag 1 ion dissolution amounts indicated almost constantly 13 lM due to AgCl formation. There were no differences in the numbers of primary osteoblast cells on silver-free and silver-containing glasses after cultivation for 1-7 days. The silver-containing calcium phosphate invert glasses showed cytocompatibility with simultaneous antibacterial activity to Escherichia coli and Staphylococcus aureus. V C 2017 Wiley Periodicals, Inc. J Biomed Mater Res Part A:105A: 3127-3135, 2017.

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“…Nanocomposite thin films containing Ag have been proposed and evaluated for a large variety of applications due to their interesting optical [1,2], electrical [2,3] and tribological/mechanical [4][5][6] properties as well as their biological activity [7,8]. Besides the specific properties of Ag and the matrix material, the performance of the nanocomposite thin films critically depends on the Ag nanoparticles size distribution and morphology as well as on the interfaces established between the nanoparticles and the matrix.…”

Section: Introductionmentioning

confidence: 99%

Characterization of surface Ag nanoparticles in nanocomposite a-C:Ag coatings by grazing incidence X-ray diffraction at sub-critical angles of incidence

et al. 2016

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Silver diffusion within nanocomposite films and/or toward the film surface is often observed during annealing of the silver-based nanocomposite films. In order to control and/or minimize this process, it is crucial to characterize the aggregated silver nanoparticles on the films surface. In this paper grazing incidence X-ray diffraction (GIXRD) with both sub-critical and supra-critical angles of incidence is used to characterize the Ag nanoparticles distribution, shape and structure both inside the matrix and on the nanocomposite film surface. The nanocomposite carbon coating containing Ag nanoparticles (a-C:Ag) was deposited by dc magnetron sputtering. The coatings were analyzed by GIXRD using fixed incident angles both below and above the critical angle for total reflection. By using sub-critical angles it was possible to eliminate diffraction from the bulk material allowing to estimate the size distribution of the nanoparticles sitting on the surface. The results obtained by GIXRD analysis were checked through comparison with the observations made by both TEM and SEM analysis. The proposed methodology can be used to characterized nanoparticles deposition on a surface and/or island formation during film growth as long an adequate substrate with high critical angle for total reflection is used.

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Depth profiles of Ag nanoparticles in silicate glass

Cited by 17 publications

References 6 publications

In situ synthesis of Ag–Cu bimetallic nanoparticles in silicate glass by a two-step ion-exchange route

In situ synthesis of Ag–Cu bimetallic nanoparticles in silicate glass by a two-step ion-exchange route

Structure, dissolution behavior, cytocompatibility, and antibacterial activity of silver‐containing calcium phosphate invert glasses

Characterization of surface Ag nanoparticles in nanocomposite a-C:Ag coatings by grazing incidence X-ray diffraction at sub-critical angles of incidence

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