Composition and Fluorescence of Gadolinium (III) Acetylacetonate Derivatives by Solvothermal Method

Fengzhu, Lv; Zhang, Yihe; Chen, Xue; Yong, Ma

doi:10.35840/2631-5092/4505

Cited by 6 publications

(2 citation statements)

References 17 publications

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“…The medium IR absorptions in the range 3100–3600 cm −1 and the band at ∼ 1620 cm −1 may be ascribed to υ(OH) and δ (H 2 O) of water molecules absorbed on the photocatalyst surface. In case of BiFeO 3 -GdFeO 3 nanocomposite, a new peak observed at ∼536 cm −1 is due to the vibration of a Gd–O stretching vibration [51] and a peak at ∼ 495 cm −1 has been attributed to the stretching vibrations of Gd-O-Gd in addition to the vibrations of BiFeO 3 . The vibrational spectrum contains both the metal oxide vibrations of Gadolinium ferrite and Octahedral environment (FeO 6 ) of bismuth.…”

Section: Resultsmentioning

confidence: 97%

Investigations on the enhanced dye degradation activity of heterogeneous BiFeO3–GdFeO3 nanocomposite photocatalyst

Subramanian

Ramasamy

Karthikeyan

et al. 2019

Heliyon

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Perovskite types of nanocomposites of BiFeO 3 –GdFeO 3 (BFO-GFO) has been synthesized using sol-gel route for the first time. The nanocomposite powders were characterized by powder X-Ray diffraction (PXRD) to confirm the existence of mixed crystallographic phases. EDX analysis on nanocomposites estimates the composition of individual element present in BFO-GFO matrix. The induced strain upon loading GdFeO 3 (GFO) in BiFeO 3 (BFO) matrix has been computed with the aid of Williamson –Hall (W–H) plot. Surface morphologies of nanocomposite powders has been studied using Field Emission Scanning Electron Microscope ( FESEM) images. The observed changes in the band gap energies of nanocomposite powders due to the inclusion of GFO has been ascertained from the tauc plots. PL emission of BFO upon loading GFO found to have detected in the IR region due to defect level transition. Finally, the methylene blue dye (MB) degradation characteristics of BFO, GFO and the nanocomposite powders of BFO-GFO have also been studied. The overall results obtained has been discussed in detail.

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Section: Resultsmentioning

confidence: 97%

Investigations on the enhanced dye degradation activity of heterogeneous BiFeO3–GdFeO3 nanocomposite photocatalyst

Subramanian

Ramasamy

Karthikeyan

et al. 2019

Heliyon

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“…3. For curve 1, two intense absorption bands at 1600 and 1519 cm −1 are associated to the enol-keto tautomers of the β-diketone corresponding to the C=O stretching vibration of keto and the C=C stretching vibration of enol, respectively, which indicates that the carboxylic acid takes off the proton to coordinate with the Tb 3+ ions by the acid radical [38][39][40] . As expected, a broadband peaked at 3435 cm −1 may be because of the presence of external water molecule.…”

Section: Resultsmentioning

confidence: 99%

Fluctuation of photon-releasing with ligand coordination in polyacrylonitrile-based electrospun nanofibers

Shen

et al. 2020

Sci Rep

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Multivariate terbium-complexes were incorporated into polyacrylonitrile (pAn) and electrospun into flexible multifunctional nanofibers with a uniform diameter of ~200 nm. Fluorescence comparison in multi-ligand-binding nanofibers under ultraviolet (UV) radiation verifies that the differentiated β-diketone ligands with dual functions are the primary cause of the spectral fluctuation, adequately illustrating the available methods for the quantification of intermolecular reciprocities between organic ligands and central tb 3+ ions. Especially under 308 nm UVB-LED pumping, the total emission spectral power of supramolecular Tb-complexes/PAN nanofibers are identified to be 2.88 µW and the total emission photon number reaches to 7.94 × 10 12 cps which are nearly six times higher than those of the binary complex ones in the visible region, respectively. By modifying the sorts of organic ligands, the luminous flux and luminous efficacy of multi-ligand Tb-complexes/PAN nanofibers are up to 1553.42 μlm and 13.72 mlm/W, respectively. Efficient photon-releasing and intense green-emission demonstrate that the polymer-capped multi-component terbium-complexes fibers have potential prospects for making designable flexible optoelectronic devices. Growing interest is being devoted to exploring novel luminescent materials with assembling one-dimensional (1D) nanostructures in view of their unique properties and intriguing applications in light-emitting devices and color display 1-4. Particularly, more remarks in challenge of 1D organic-inorganic composites lie in integrating the flexibility and processability of the organic materials into the thermal stability and chemical resistance of the inorganic materials 5-8. So far, electrospinning is considered as a relatively straightforward method for producing 1D luminescent nanomaterials with high porosity, favorable flexibility and large surface, such as nanofibers, nanowires, nanotubes, nanorods, nanobelts and so forth 9-13. The electrospun setup for fabricating the nanofibers is shown in Fig. 1. In comparison to other nanofibers, the ordered 1D fluorescent electrospun nanofibers with excellent photon-releasing efficiency, high surface-to-volume ratio and outstanding organic-inorganic advantages are hopeful serving in the fields of electrical, electrochemical, biomedical and environmental 14-18. Considering that rare earth (RE) complexes have sharp and strong emission lines under ultraviolet (UV) irradiation through effective intramolecular energy transfer from the coordinated ligands to the RE-ions, the affinity can be improved by selecting or synthesizing organic groups 19-22. Among the trivalent lanthanide compounds with visible light emission, the investigations are mainly focused on the europium and terbium complexes which possess long-lived intense red and green luminescence with high quantum efficiency 23-26. In addition, as a result of the absent dense energy level, the probability of non-radiative transition is greatly reduced between the triplet and ground states of ligands,...

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Probing of structural, surface morphological, optical, low temperature magnetic and electrochemical investigations on gadolinium selenite

Ariponnammal,

Ramalakshmi,

Soundare

2024

J Mater Sci: Mater Electron

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Composition and Fluorescence of Gadolinium (III) Acetylacetonate Derivatives by Solvothermal Method

Cited by 6 publications

References 17 publications

Investigations on the enhanced dye degradation activity of heterogeneous BiFeO3–GdFeO3 nanocomposite photocatalyst

Investigations on the enhanced dye degradation activity of heterogeneous BiFeO3–GdFeO3 nanocomposite photocatalyst

Fluctuation of photon-releasing with ligand coordination in polyacrylonitrile-based electrospun nanofibers

Probing of structural, surface morphological, optical, low temperature magnetic and electrochemical investigations on gadolinium selenite

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