Effect of Mn doping on structural and optical properties of sol gel derived ZnO nanoparticles

Husain, Shahid; Alkhtaby, Lila A.; Giorgetti, E.; Zoppi, Angela; Miranda, Maurizio Muniz

doi:10.1016/j.jlumin.2013.07.003

Cited by 57 publications

(19 citation statements)

References 23 publications

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“…The modes at 205 and 331 cm −1 wavenumbers are attributed to 2E 2L and E 2H –E 2L modes, respectively. The mode at 381 cm −1 corresponds to A1 (TO) and the peak at 437 cm −1 is attributed to E 2H mode . The mode at 586 cm −1 is attributed to E 1 symmetry with LO modes.…”

Section: Resultsmentioning

confidence: 63%

Effect of barium doping on structural and optical properties of zinc oxide nanoparticles synthesized by microwave hydrothermal method

N’Konou

Haris

Lare

et al. 2015

Physica Status Solidi (b)

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International audienceUndoped and Ba-doped ZnO nanoparticles were successfully synthesized using microwave hydrothermal method. The influence of Barium concentration on physical and optical properties of ZnO nanoparticles was investigated. X-Ray Diffraction (XRD) analysis revealed that the synthesized ZnO nanoparticles are polycrystalline with hexagonal wurtzite crystal structure and their average crystallite sizes are found to vary from 20 to 21.5nm in diameter. The SEM images showed that surface morphology of the samples was influenced by the presence of Ba impurities. Ultraviolet and green emission bands around 415 and 603nm, respectively were observed in photoluminescence spectra for all samples. The FTIR spectra indicated the presence of the distinct characteristic absorption peak at 489cm(-1) for Zn-O stretching modes. Raman spectra exhibited the presence of an intense peak around 437cm(-1) followed by a peak around 586cm(-1) in the higher wave number region

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Section: Resultsmentioning

confidence: 63%

Effect of barium doping on structural and optical properties of zinc oxide nanoparticles synthesized by microwave hydrothermal method

N’Konou

Haris

Lare

et al. 2015

Physica Status Solidi (b)

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“…Pure ZnO shows Raman peak at 439 cm −1 which is attributed to E 2H mode of the ZnO nonpolar optical phonons. The bands at 327 and 380 cm −1 are assigned as the 2E 2L and the TO mode with A 1 symmetry (A 1T ), respectively [20]. The bands at 584 cm −1 correspond to E 1 symmetry with LO modes.…”

Section: Resultsmentioning

confidence: 99%

“…The E 2L mode is mainly associated with the vibration of the zinc sublattice, while the E 2H mode involves the oxygen motion and characteristic of the wurtzite structure. The B 1 mode is silent [20,21]. Figure 2 shows the Raman spectra of the as-synthesized undoped and Eu-doped ZnO nanocrystals excited by red laser.…”

Section: Resultsmentioning

confidence: 99%

Synthesis and Characterization of Europium‐Doped Zinc Oxide Photocatalyst

Phuruangrat

Yayapao

Thongtem

et al. 2014

Journal of Nanomaterials

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Single crystalline flower-like ZnO and Eu-doped ZnO structures were successfully synthesized via a sonochemical method. Structures, morphologies, and photocatalytic activities of the as-synthesized samples were determined using X-ray diffraction, scanning electron microscopy, transmission electron microscopy, Raman spectroscopy, X-ray photoelectron spectroscopy, and ultraviolet-visible absorption spectroscopy. The photocatalytic activities of the as-synthesized samples were evaluated by the degradation of methylene blue in aqueous solutions under UV light. The photocatalytic results indicate that the as-synthesized Eu-doped ZnO shows good photocatalytic activity and could be considered as a promising photocatalyst for dye waste water treatment.

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“…This phenomenon is common when you dope a material because impurities are introduced in the crystal lattice. Additionally, it is common after the processing of materials because of residual tensile stresses presented in thin layers [ 24 , 25 , 26 ]. According to previous reports [ 22 , 27 , 28 ] for all ZnO/NaMt nanohybrids, an increase to NaMt content causes a decrease in the characteristic crystal phase peaks of ZnO.…”

Section: Resultsmentioning

confidence: 99%

Development of ZnO/Na-Montmorillonite Hybrid Nanostructures Used for PVOH/ZnO/Na-Montmorillonite Active Packaging Films Preparation via a Melt-Extrusion Process

et al. 2020

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Nowadays, the shelf-life extension of foods is a topic of major interest because of its environmental and economic benefits. For this purpose, various methods like deep-freezing, ultra-high-temperature pasteurization, drying methods, use of chemicals, controlled-atmosphere preservation, ionizing irradiation, and were investigated. During the last years, the smart packaging for foods using natural biodegradable components is of great interest because it provides positive environmental fingerprint and high shelf-life extension. In the present work, a new nanostructured composite material, the ZnO/Na-Montmorillonite hybrid, was developed. The high antimicrobial properties of the 3-D ZnO material in combination with the high barrier and strength properties of the 2-D Na-Montmorillonite material provided a high promising component for food smart packaging applications. As an extra innovation of this process, the ZnO nanorods coated the external surface of the Na-Montmorillonite and it was not intercalated into the clay as a pillaring material. This new material was incorporated with a 3% w/w composition with a biodegradable poly(vinyl)alcohol (PVOH) polymeric matrix which also exhibits antimicrobial activity. The final product was tested via XRD, FTIR, SEM, tensile test, water sorption, water vapor permeability, oxygen permeability UV–vis, and anti-microbial activity tests and it exhibited advanced mechanical and antimicrobial properties, especially for a ZnO/Na-Montmorillonite fraction of 4:1.

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Effect of Mn doping on structural and optical properties of sol gel derived ZnO nanoparticles

Cited by 57 publications

References 23 publications

Effect of barium doping on structural and optical properties of zinc oxide nanoparticles synthesized by microwave hydrothermal method

Effect of barium doping on structural and optical properties of zinc oxide nanoparticles synthesized by microwave hydrothermal method

Synthesis and Characterization of Europium‐Doped Zinc Oxide Photocatalyst

Development of ZnO/Na-Montmorillonite Hybrid Nanostructures Used for PVOH/ZnO/Na-Montmorillonite Active Packaging Films Preparation via a Melt-Extrusion Process

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