Synthesis and characterization of Y2O3:Eu3+ phosphors using the Sol-Combustion method

Ali, Abdub G.; Dejene, F.B.; Swart, H.C.

doi:10.1016/j.physb.2013.11.051

Cited by 13 publications

(5 citation statements)

References 7 publications

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“…ions were incorporated into the Y 3? sites (Ali et al 2014;Yang et al 2015 Figure 4 showed photoluminescence excitation and emission spectra of Y 2 O 3 :Eu nanoparticles at the room temperature. In the excitation spectrum, a broad band with a maximum at 255 nm originated from the excitation of the oxygen-toeuropium charge transfer band.…”

Section: Xrd Analysismentioning

confidence: 99%

Size-dependent cytotoxicity of yttrium oxide nanoparticles on primary osteoblasts in vitro

Zhou

et al. 2016

J Nanopart Res

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Yttrium oxide nanoparticles are an excellent host material for the rare earth metals and have high luminescence efficiency providing a potential application in photodynamic therapy and biological imaging. In this study, the effects of yttrium oxide nanoparticles with four different sizes were investigated using primary osteoblasts in vitro. The results demonstrated that the cytotoxicity generated by yttrium oxide nanoparticles depended on the particle size, and smaller particles possessed higher toxicological effects. For the purpose to elucidate the relationship between reactive oxygen species generation and cell damage, cytomembrane integrity, intracellular reactive oxygen species level, mitochondrial membrane potential, cell apoptosis rate, and activity of caspase-3 in cells were then measured. Increased reactive oxygen species level was also observed in a size-dependent way. Thus, our data demonstrated that exposure to yttrium oxide nanoparticles resulted in a size-dependent cytotoxicity in cultured primary osteoblasts, and reactive oxygen species generation should be one possible damage pathway for the toxicological effects produced by yttrium oxide particles. The results may provide useful information for more rational applications of yttrium oxide nanoparticles in the future.

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Section: Xrd Analysismentioning

confidence: 99%

Size-dependent cytotoxicity of yttrium oxide nanoparticles on primary osteoblasts in vitro

Zhou

et al. 2016

J Nanopart Res

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“…In the case when the sample is prepared with Thiourea+LiOH the former two peaks are suppressed and two new peaks [18, 20, 23-26, 29, 30]. When Thiourea is utilized in the synthesis process, improvement on luminescence emission due to S ions is expected [22]. The huge enhancement observed when the mixture Thiourea-LiOH is used as precipitant agent could be due to the formation of (SO 4 ) 2− groups on the crystallites' surface [29,31].…”

Section: Morphological Characterization Of the Nanophosphorsmentioning

confidence: 99%

“…:Eu 3+ phosphor powders have been prepared by the sol-combustion synthesis method using a sulfur-containing organic fuel in an ethanol-aqueous solution [20,21]. Upconversion luminescence in Y 2 O 3 :Er 3+ -Yb 3+ nanocrystals as a function by tridoping with different contents of Li ion was investigated [18,[21][22][23][24]. However, the effects on photoluminescence properties of Li and S ions have not yet been investigated.…”

Section: Introductionmentioning

confidence: 99%

Enhancement of Visible Upconversion Emission in Y₂O₃:Er³⁺‐Yb³⁺ by Addition of Thiourea and LiOH in the Phosphor Synthesis

Resendiz-L

Dı́az-Torres

Meza

et al. 2015

Journal of Nanomaterials

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Spherical like Y2O3nanostructures doped with Er3+and Yb3+ions have been synthesized by a facile hydrothermal method. The samples were prepared by using different precipitant agents in the synthesis process. The phosphors were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and photoluminescence spectroscopy. Effects of the precipitant agents on structural, morphological, and photoluminescence properties of Y2O3:Er3+-Yb3+are studied and discussed. XRD analysis indicates that all samples, prepared with different precipitant agents, present the same cubic phase. Electron microscopy measurements show regular spherical shapes with size diameter depending on precipitant agent. Photoluminescence reveals that the samples have strong green (563 nm) and red (660 nm) emissions corresponding to4S3/2 → 4I15/2and4F9/2 → 4I15/2transitions of Er3+ions, respectively. The nanophosphors prepared with both Thiourea and Lithium Hydroxide exhibit the stronger visible upconversion luminescence under 980 nm diode laser excitation.

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“…Europium is one of the most commonly used phosphors to produce systems for photodynamic therapy and bioimaging . The emission spectra of Eu 3+ ions contain spectral components at wavelengths of 606 to 635 nm, which makes it possible to use materials based on them in the production of optical medical lasers for intravenous irradiation of blood .…”

Section: Introductionmentioning

confidence: 99%

Luminescence of Eu³⁺ ions in hybrid polymer‐inorganic composites based on poly(methyl methacrylate) and zirconia nanoparticles

et al. 2018

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Spherical nanoparticles of ZrO with 2 and 10 mol% EuO up to 20 nm size were prepared by the method of hydrothermal synthesis for luminescent functionalization of the polymer-inorganic nanocomposites based on poly(methyl methacrylate). Surface modification of oxide nanoparticles was carried out by 3-(trimethoxysilyl)propyl methacrylate, dimethoxymethylvinyl silane and 2-hydroxyethyl methacrylate to provide uniform distribution and to prevent agglomeration of nanosized filler in the polymer matrix. Polymer-inorganic composites were synthesized by in situ free radical polymerization in bulk. Structuring of ZrO -EuO nanoparticles in the poly(methyl methacrylate) was studied by very-small-angle neutron scattering. According to the results, the dependence of photoluminescent properties of ZrO -EuO nanoparticles on the content of lanthanide, the symmetry of the crystal field, surface treatment and the polymer matrix were established. A correlation was shown between Stark splitting in luminescence spectra of ZrO -EuO nanoparticles and their phase composition. Using MMT-assay it was shown that composites based on poly(methyl methacrylate) and ZrO -EuO nanoparticles do not have cytotoxic properties, which makes it possible to use them as prosthesis materials with contrasted and luminescent imaging properties.

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Synthesis and characterization of Y2O3:Eu3+ phosphors using the Sol-Combustion method

Cited by 13 publications

References 7 publications

Size-dependent cytotoxicity of yttrium oxide nanoparticles on primary osteoblasts in vitro

Size-dependent cytotoxicity of yttrium oxide nanoparticles on primary osteoblasts in vitro

Enhancement of Visible Upconversion Emission in Y₂O₃:Er³⁺‐Yb³⁺ by Addition of Thiourea and LiOH in the Phosphor Synthesis

Luminescence of Eu³⁺ ions in hybrid polymer‐inorganic composites based on poly(methyl methacrylate) and zirconia nanoparticles

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Synthesis and characterization of Y2O3:Eu3+ phosphors using the Sol-Combustion method

Cited by 13 publications

References 7 publications

Size-dependent cytotoxicity of yttrium oxide nanoparticles on primary osteoblasts in vitro

Size-dependent cytotoxicity of yttrium oxide nanoparticles on primary osteoblasts in vitro

Enhancement of Visible Upconversion Emission in Y2O3:Er3+‐Yb3+ by Addition of Thiourea and LiOH in the Phosphor Synthesis

Luminescence of Eu3+ ions in hybrid polymer‐inorganic composites based on poly(methyl methacrylate) and zirconia nanoparticles

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Enhancement of Visible Upconversion Emission in Y₂O₃:Er³⁺‐Yb³⁺ by Addition of Thiourea and LiOH in the Phosphor Synthesis

Luminescence of Eu³⁺ ions in hybrid polymer‐inorganic composites based on poly(methyl methacrylate) and zirconia nanoparticles