Zinc oxide nanoparticles with incorporated silver: Structural, morphological, optical and vibrational properties

Mosquera, Edgar; Rojas-Michea, Carolina; Morel, Mauricio J.; Gracia, F.; Fuenzalida, V.M.; Zárate, R. A.

doi:10.1016/j.apsusc.2015.04.148

Cited by 55 publications

(23 citation statements)

References 34 publications

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“…The O 1s peak was deconvoluted into two lorentzian components. The O (1s) BE's (530.9 and 532.7 eV) are also in agreement with the previously reported values for ZnO with the oxidation state 2 (29). The peaks with BE of 369.1 and 375.2 eV correspond to Ag (3d 5/2 ) and Ag (3d 3/2 ), respectively, which is a characteristic of silver (Ag 0 ) in the sample (30).…”

Section: Results and Discussion 31 Xrd Analysissupporting

confidence: 90%

“…Figure 4 shows the deconvoluted highresolution XPS spectra of Zn (2p), O (1s), Cu (2p) and Ag (3d), respectively. According to spectra, the Zn (2p) consists of two peaks positioned at 1022.1 and 1045.2 eV for Zn (2p 3/2 ) and Zn (2p 1/2 ), in agreement with the previously reported binding energies (BE) of ZnO (29). The splitting of Zn2p states was about 23 eV which was induced from the powerful spinorbit coupling.…”

Section: Results and Discussion 31 Xrd Analysissupporting

confidence: 87%

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Inhibition of growth ofS. epidermidisby hydrothermally synthesized ZnO nanoplates

Abinaya

Mayandi

Osborne

et al. 2017

Mater. Res. Express

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The antibacterial effect of zinc oxide (ZnO#1) as prepared and annealed (ZnO#2) at 400 o C, Cu doped ZnO (CuZnO), and Ag doped ZnO (AgZnO) nanoplates on Staphylococcus epidermidis was investigated for the inhibition and inactivation of cell growth. The results shows that pure ZnO and doped ZnO samples exhibited antibacterial activity against S. epidermidis as compared to tryptic soy broth (TSB). Also it is observed that S. epidermidis was extremely sensitive to treatment with ZnO nanoplates and it is clear that the effect is not purely depend on Cu/Ag. Phase identification of a crys talline material and unit cell dimensions were studied by Xray powder diffraction (XRD). The scan ning electron microscopy (SEM) provides information on sample's surface topography and the EDX confirms the presence of Zn, O, Cu and Ag. Xray photoelectron spectroscopy (XPS) was used to analyze the elemental composition and electronic state of the elements that exist within the samples. These studies confirms the formation of nanoplates and the presence of Zn, O, Ag, Cu with the oxida tion states +2, 2, 0 and +2 respectively. These results indicates promising antibacterial applications of these ZnObased nanoparticles synthesized with lowcost hydrothermal methods.

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Section: Results and Discussion 31 Xrd Analysissupporting

confidence: 90%

Section: Results and Discussion 31 Xrd Analysissupporting

confidence: 87%

Inhibition of growth ofS. epidermidisby hydrothermally synthesized ZnO nanoplates

Abinaya

Mayandi

Osborne

et al. 2017

Mater. Res. Express

View full text Add to dashboard Cite

show abstract

“…The bandgap of pure ZnO and Ag-doped ZnO nanoparticles were investigated with the UV-vis spectra in the range of 200-800 nm. Pure ZnO nanoparticles were found to be having a direct bandgap, which has been calculated from the plot of Absorbance Vs Wavelength (λ) as shown in the figure 5 [24][25][26]. The determined values of the bandgap energy of pure ZnO and Ag-doped ZnO nanoparticles are listed in table 3 indicates that the bandgap reduces the exciton absorptions from 3.1 eV and 1.6 eV by the addition of silver content in the ZnO nanoparticles.…”

Section: Optical Propertiesmentioning

confidence: 99%

Structure, morphology and luminescence properties of sol-gel method synthesized pure and Ag-doped ZnO nanoparticles

Chitradevi

Lenus

Jaya

2019

Mater. Res. Express

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Highly Crystalline pure and Ag-doped ZnO nanoparticles were prepared using the inexpensive sol-gel synthesis method with the stimulation of transition metal ion surfactant. The prepared pure and Agdoped (Silver doped) ZnO nanoparticles were characterised by various sophisticated techniques like x-ray Diffraction (XRD), Scanning Electron Microscope (SEM), Dynamic Light scattering (DLS), Fourier Transform Infrared Spectroscopy (FTIR), UV-visible absorption, Photoluminescence (PL) and Zeta potential. The result indicates that the average grain size of the prepared nanoparticles was found to be a minuscule 24 nm with a commendable bandgap of 3.21 eV and 1.73 eV respectively. The hexagonal wurzite structures of pure and Ag-doped ZnO at room temperature confirmed the luminescence characteristics of the nanoparticles.

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“…Mosquera et al have attributed similar peak to the local vibrational modes (LVMs). Indeed, the incorporation of Ag in the host lattice can introduce additional modes (LVMs) in the Raman spectra [32,38].…”

Section: Raman Analysismentioning

confidence: 99%

Fabrication and Characterization of Highly Textured Thin Films of Undoped and Ag-Doped ZnO

et al. 2019

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Undoped and Ag-doped ZnO thin films with different silver concentrations (0, 1, 3, and 7 wt%) were synthesized by sol-gel method and deposited onto glass substrate by dip-coating technique. Zinc acetate dehydrate and silver nitrate were used as starting materials. 2-Methoxyethanol and ethanolamine were used as solvent and stabilizer. Characterization by X-ray diffraction has revealed that the undoped and Ag-doped ZnO are polycrystalline, and have the wurtzite hexagonal structure with a preferred orientation along c-axis. The nanometric size (27-34 nm) of ZnO crystallites varies with the concentration of Ag. The surface morphology analysis, by atomic force microscopy and scanning electron microscopy, depicts a homogeneous dispersion of ZnO crystallites in the form of randomly spread wrinkles-like formation. The Raman spectroscopy confirms the Ag incorporation in the ZnO lattice. All films exhibit a transmittance greater than 75% in the visible region, and a sharp absorption band at 325 nm corresponding to the fundamental absorption edge. The room-temperature photoluminescence spectra of the prepared thin films display a strong ultraviolet band at 380 nm originated from excitons recombination, and four bands in the visible region at 430 nm (violet), 460 nm, 480 nm (blue) and 530 nm (green) from created defect levels in the band gap. These synthesized materials may be potential candidates in the manufacture of devices using short wavelengths.

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Zinc oxide nanoparticles with incorporated silver: Structural, morphological, optical and vibrational properties

Cited by 55 publications

References 34 publications

Inhibition of growth ofS. epidermidisby hydrothermally synthesized ZnO nanoplates

Inhibition of growth ofS. epidermidisby hydrothermally synthesized ZnO nanoplates

Structure, morphology and luminescence properties of sol-gel method synthesized pure and Ag-doped ZnO nanoparticles

Fabrication and Characterization of Highly Textured Thin Films of Undoped and Ag-Doped ZnO

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