Structural, morphological, electrical and dielectric properties of Mn doped CeO2

Kumar, Pawan; Kumar, Parmod; Kumar, Ashish; Meena, Ravi Kumar; Tomar, Renu; Chand, Fakir; Asokan, K.

doi:10.1016/j.jallcom.2016.02.153

Cited by 89 publications

(20 citation statements)

References 40 publications

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“…The enlargement in size is due to the substitution of Fe 3+ ions with relatively large sized Zn 2+ ions. The obtained trend in crystallite size for higher Zn doped Fe2O3 samples has a similar trend as also discussed in previous reports for Y doped ZnO, Mn-doped CeO2 and Mg-doped ZnO samples [21][22][23].…”

Section: Xrd Analysissupporting

confidence: 89%

Zn Doped α-Fe2O3: An Efficient Material for UV Driven Photocatalysis and Electrical Conductivity

et al. 2020

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Zinc (Zn) doped hematite (α-Fe2O3) nanoparticles with varying concentrations (pure, 2%, 4% and 6%) were synthesized via sol-gel method. The influence of divalent Zn ions on structural, optical and dielectric behavior of hematite were studied. X-ray diffraction (XRD) pattern of synthesized samples were indexed to rhombohedral R3c space group of hematite with 14–21 nm crystallite size. The lattice parameter (a and c) values increase upto Zn 4% and decrease afterwards. The surface morphology of prepared nanoparticles were explored using transmission electron microscopy (TEM). The band gap measured from Tauc’s plot, using UV-Vis spectroscopy, showed reduction in its values upto Zn 4% and the reverse trend was obtained in higher concentrations. The dielectric properties of pure and Zn doped hematite were investigated at room temperature and followed the same trends as that of XRD parameters and band gap. Photocatalytic properties of nanoparticles were performed for hazardous Rose bengal dye and showed effective degradation in the presence of UV light. Hence, Zn2+ doped hematite can be considered as an efficient material for the potential applications in the domain of photocatalysis and also higher value of dielectric constant at room temperature makes them applicable in high energy storage devices.

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Section: Xrd Analysissupporting

confidence: 89%

Zn Doped α-Fe2O3: An Efficient Material for UV Driven Photocatalysis and Electrical Conductivity

et al. 2020

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“…However, the absorbance intensity for the 3 and 5% Mn-doped CeO 2 sample were found to decrease when compared to the undoped CeO 2 sample. This may be due to the electron-electron, electron-donor atom and electronhole interactions which increase drastically as doping is increased beyond a critical limit 29,30 . These interactions dominate the electron-photon interactions.…”

Section: Resultsmentioning

confidence: 99%

Synthesis, Characterization, and Photocatalytic Properties of Flower-like Mn-doped Ceria

Zhang

et al. 2018

Mat. Res.

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Mn-doped CeO 2 flower-like microstructures have been synthesized by a facile one-step compositehydroxide-mediated method. The structure, morphology, optical and the surface properties of Mn doped CeO 2 have been investigated by X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM), UV-Vis absorption spectroscopy and X-ray photoelectron spectroscopy (XPS). The XRD results confirmed the successful incorporation of Mn into the CeO 2 lattice through the formation of face-centered cubic solid solution. The photocatalytic activities of the catalysts were evaluated by measuring the photodegradation efficiency of Rhodamine B (RhB) under ultraviolet light irradiation. With an optimal molar ratio of 1% in Mn/CeO 2 the highest rate photodegradation was achieved under the experimental conditions. The enhanced photocatalytic activity can be attributed to the incorporation of multivalent Mn in CeO 2 promoted the separation of photogenerated charges, inhibited the recombination of photogenerated carriers, and thus prolonged the charges lifetime to participate in the photocatalytic reaction.

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“…The increasing intensity in XRD peak signies an improvement in crystalline nature of CeO 2 lms with N ion implantation. The average crystallite size of the CeO 2 is estimated from most prominent peak corresponding to (111) reection plane using the Scherrer's formula 29 and listed in Table 1,…”

Section: X-ray Diffractionmentioning

confidence: 99%

Structural, optical and magnetic properties of N ion implanted CeO₂ thin films

Kumar

et al. 2017

RSC Adv.

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Structural, morphological, electrical and dielectric properties of Mn doped CeO2

Cited by 89 publications

References 40 publications

Zn Doped α-Fe2O3: An Efficient Material for UV Driven Photocatalysis and Electrical Conductivity

Zn Doped α-Fe2O3: An Efficient Material for UV Driven Photocatalysis and Electrical Conductivity

Synthesis, Characterization, and Photocatalytic Properties of Flower-like Mn-doped Ceria

Structural, optical and magnetic properties of N ion implanted CeO₂ thin films

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Structural, morphological, electrical and dielectric properties of Mn doped CeO2

Cited by 89 publications

References 40 publications

Zn Doped α-Fe2O3: An Efficient Material for UV Driven Photocatalysis and Electrical Conductivity

Zn Doped α-Fe2O3: An Efficient Material for UV Driven Photocatalysis and Electrical Conductivity

Synthesis, Characterization, and Photocatalytic Properties of Flower-like Mn-doped Ceria

Structural, optical and magnetic properties of N ion implanted CeO2 thin films

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Structural, optical and magnetic properties of N ion implanted CeO₂ thin films