Synthesis and Characterization of Electrospun Poly(ethylene oxide)/Europium-Doped Yttrium Orthovanadate (PEO/YVO<sub>4</sub>:Eu<sup>3+</sup>) Hybrid Nanofibers

Chigome, Samuel; Abiona, Adurafimihan A.; Ajao, J. A.; Kana, J. B. Kana; Guerbous, L.; Torto, Nelson; Mâaza, M.

doi:10.1080/00914037.2010.504146

Cited by 26 publications

(6 citation statements)

References 16 publications

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“…The PL measurements proved that nano-scaled Eu2O3 material exhibit improved fluorescence properties, as the major emission band was centred at about 614 nm due to its well-defined transition within 4d and 4f electron shell which confirm its potential usage in phosphors and luminescence devices. Considering this preliminary encouraging luminescence responses from such a biosynthesized nanoparticle, it is intended to investigate the size effect [36][37] as well as to reproduce such studies on other rare earth oxides in their pure or doped configuration as it was demonstrated previously in the bulk form [38][39][40][41][42][43][44][45].…”

Section: (B) (A)mentioning

confidence: 94%

Optical properties of biosynthesized nanoscaled Eu₂O₃ for red luminescence applications

et al. 2020

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This contribution reports on the optical properties of bio-synthesised Eu2O3 nanoparticles bio-engineered for the first time by a green and cost effective method using aqueous fruit extracts of Hyphaene thebaica as an effective chelating and capping agent. The morphology, structural and optical properties of the samples annealed at 500 o C were confirmed by using high resolution transmission electron microscope (HR-TEM), X-Ray diffraction analysis (XRD), UV-vis spectrocopy and PL spectrometer. The XRD results confirmed the characteristic body centered cubic (bcc) structure of Eu2O3 nanoparticles with an average size of 20 nm. HR-TEM revealed square type morphology with an average size of ~ 6 nm. Electron Dispersion Energy dispersive X-ray Spectroscopy (EDS) spectrum confirmed the elemental single phase nature of pure Eu2O3. Furthuremore, the FTIR spectroscopy revealed the intrinsic characteristic peaks of Eu-O bond stretching vibrations. UV-vis reflectance proved that Eu2O3 absorbs in a wide range of the solar spectru from VUV-UV region with bandgap of 5.1 eV. The luminescence properties of such cubic were characterized by an intense red emission centered at 614 nm. It was observed that the biosynthesized Eu2O3 nanoparticles exhibit an efficient red-luminescence & hence a potential material as red phosphor.

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Section: (B) (A)mentioning

confidence: 94%

Optical properties of biosynthesized nanoscaled Eu₂O₃ for red luminescence applications

et al. 2020

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“…The spectrum of PEO given by Figure 7c shows characteristic peaks with vibrational bands at 2882 cm -1 for the symmetric and asymmetric C-H stretching modes, 1467 cm -1 and 1341 cm -1 for the CH 2 , and 1097 cm -1 and 961 cm -1 due to the asymmetric stretching of the C-O group. 57,58 The spectrum for the 1% (w/w) Ti 3 C 2 T x /PEO given by Figure 7d shows no difference in obvious peaks. Figure 7e gives the characteristic peaks for PAA nanofibers with vibrational bands at 2900-3200 cm -1 for -OH and 1700 cm -1 for the C=O group.…”

Section: Ftir Analysismentioning

confidence: 98%

Preparation and characterization of polymer‐Ti₃C₂T_x (MXene) composite nanofibers produced via electrospinning

Mayerberger

Urbanek

McDaniel

et al. 2017

J of Applied Polymer Sci

134

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MXene, a recently-discovered family of two-dimensional (2D) transition metal carbides and/or nitrides, have attracted much interest due to their unique electrical, thermal, and mechanical properties. In this study, polyacrylic acid (PAA), polyethylene oxide (PEO), polyvinyl alcohol (PVA), and alginate/PEO were electrospun with delaminated Ti 3 C 2 (MXene) flakes. The effect of small additions of delaminated Ti 3 C 2 (1% w/w) on the structure and properties of the nanofibers were investigated and compared to those of the neat polymer nanofibers using scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FT-IR). Ti 3 C 2 had an effect on the solution properties of the polymer and a greater effect on the average fiber diameter. The Ti 3 C 2 T x /PEO solution exhibited the largest change in viscosity and conductivity with an 11% and 73.6% increase over the base polymer, respectively. X-ray diffractograms demonstrated a high degree of crystallization for Ti 3 C 2 /PEO and a slight decrease in crystallinity for Ti 3 C 2 /PVA. This is the author manuscript accepted for publication and has undergone full peer review but has not been through the copyediting, typesetting, pagination and proofreading process, which may lead to differences between this version and the Version record. Please cite this article as

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“…The spectrum of PCL/chitosan/PEO (Figure 4a) exhibits a broad absorption band in the range of 3400–3500 cm −1 , which is assigned to N–H and O–H stretching vibrations of chitosan. The peaks at about 1000–1300 cm −1 are related to C–O stretching vibration of ether groups in PEO and PCL, as well as in chitosan [35]. The intense bands around 2865 and 2990 cm −1 are related to the symmetric and asymmetric stretching vibrations of CH 2 aliphatic.…”

Section: Resultsmentioning

confidence: 99%

Fabrication and Characterization of Core-Shell Electrospun Fibrous Mats Containing Medicinal Herbs for Wound Healing and Skin Tissue Engineering

et al. 2019

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Nanofibrous structures mimicking the native extracellular matrix have attracted considerable attention for biomedical applications. The present study aims to design and produce drug-eluting core-shell fibrous scaffolds for wound healing and skin tissue engineering. Aloe vera extracts were encapsulated inside polymer fibers containing chitosan, polycaprolactone, and keratin using the co-axial electrospinning technique. Electron microscopic studies show that continuous and uniform fibers with an average diameter of 209 ± 47 nm were successfully fabricated. The fibers have a core-shell structure with a shell thickness of about 90 nm, as confirmed by transmission electron microscopy. By employing Fourier-transform infrared spectroscopy, the characteristic peaks of Aloe vera were detected, which indicate successful incorporation of this natural herb into the polymeric fibers. Tensile testing and hydrophilicity measurements indicated an ultimate strength of 5.3 MPa (elongation of 0.63%) and water contact angle of 89°. In-vitro biological assay revealed increased cellular growth and adhesion with the presence of Aloe vera without any cytotoxic effects. The prepared core-shell fibrous mats containing medical herbs have a great potential for wound healing applications.

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Synthesis and Characterization of Electrospun Poly(ethylene oxide)/Europium-Doped Yttrium Orthovanadate (PEO/YVO₄:Eu³⁺) Hybrid Nanofibers

Cited by 26 publications

References 16 publications

Optical properties of biosynthesized nanoscaled Eu₂O₃ for red luminescence applications

Optical properties of biosynthesized nanoscaled Eu₂O₃ for red luminescence applications

Preparation and characterization of polymer‐Ti₃C₂T_x (MXene) composite nanofibers produced via electrospinning

Fabrication and Characterization of Core-Shell Electrospun Fibrous Mats Containing Medicinal Herbs for Wound Healing and Skin Tissue Engineering

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Synthesis and Characterization of Electrospun Poly(ethylene oxide)/Europium-Doped Yttrium Orthovanadate (PEO/YVO4:Eu3+) Hybrid Nanofibers

Cited by 26 publications

References 16 publications

Optical properties of biosynthesized nanoscaled Eu2O3 for red luminescence applications

Optical properties of biosynthesized nanoscaled Eu2O3 for red luminescence applications

Preparation and characterization of polymer‐Ti3C2Tx (MXene) composite nanofibers produced via electrospinning

Fabrication and Characterization of Core-Shell Electrospun Fibrous Mats Containing Medicinal Herbs for Wound Healing and Skin Tissue Engineering

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Synthesis and Characterization of Electrospun Poly(ethylene oxide)/Europium-Doped Yttrium Orthovanadate (PEO/YVO₄:Eu³⁺) Hybrid Nanofibers

Optical properties of biosynthesized nanoscaled Eu₂O₃ for red luminescence applications

Optical properties of biosynthesized nanoscaled Eu₂O₃ for red luminescence applications

Preparation and characterization of polymer‐Ti₃C₂T_x (MXene) composite nanofibers produced via electrospinning