AC conductivity, complex impedance and photocatalytic applications of Co2+ substituted Mg–Zn nanoferrite

Al-Bassami, N.S.; Mansour, S.F.

doi:10.1007/s00339-020-04022-2

Cited by 25 publications

(3 citation statements)

References 35 publications

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“…The AC trend observed in Mg–Zn ferrites nanostructures is primarily due to the relaxation and hopping mechanisms that take place among the localized states within the band gap. The mechanism of exciton hopping happens frequently at ambient temperature, resulting in a huge hopping distance …”

Section: Resultsmentioning

confidence: 99%

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Influence of Zinc Substitution on the Structural, Dielectric, and Gas-Sensing Properties of Mg_1–xZn_xFe₂O₄ Nanoparticles

Nazir,

Javaid,

Baig

et al. 2023

ACS Omega

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In the present work, Mg1–x Zn x Fe2O4 (MZFO) nanoparticles with x = 0.0, 0.2, 0.35, and 0.5 were synthesized via a chemical coprecipitation method. The study aimed to explore the effect of substituting Mg with Zn in MZFO on its structural, dielectric, and gas-sensing properties. The spinel phase formation was confirmed using X-ray diffraction, and the morphology of the prepared nanoparticles was revealed using scanning electron microscopy. Fourier transform infrared spectroscopy (FTIR) analysis confirmed the band ranges of 500–600 cm–1 for tetrahedral and 390–450 cm–1 for octahedral lattice sites. The dielectric data showed that Zn substitution in MZFO decreased both the dielectric constant and loss with increasing frequencies and attained a stagnant value at higher frequencies. Furthermore, the gas-sensing characteristics of Zn-substituted spinel ferrites at room temperature for CO2, O2, and N2 were studied. The nanostructured MZFO exhibited high sensitivity in the order of CO2 > O2 ≫ N2 and showed a good response time of (∼1 min) for CO2, demonstrating that MZFO can be a good potential candidate for gas-sensing applications.

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Section: Resultsmentioning

confidence: 99%

“…The mechanism of exciton hopping happens frequently at ambient temperature, resulting in a huge hopping distance. 45 3.3. Gas-Sensing Properties.…”

Section: Structural Analysismentioning

confidence: 99%

Influence of Zinc Substitution on the Structural, Dielectric, and Gas-Sensing Properties of Mg_1–xZn_xFe₂O₄ Nanoparticles

Nazir,

Javaid,

Baig

et al. 2023

ACS Omega

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“…Dye degradation normally depends on several parameters, including light absorption capacity, producing and separating electron-hole (e-h) pairs, and inhibiting e-h recombination [45]. La/Fe substitution increases the Table 2.…”

Section: Photocatalytic Investigationmentioning

confidence: 99%

Eco-friendly Co-Mg-La nanoferrites for an efficient MB removal for wastewater treatment applications

2023

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Improving effective and thrifty photocatalysts was deemed an outstanding approach for pollution handling. Here, a novel magnetic Co0.5Mg0.5LaxFe2-xO4 nanoparticle photocatalysts were synthesized via a combustion approach for the harmful methylene blue (MB) dye degradation. These samples were labeled as Co0.5Mg0.5Fe2O4 (CMLF0), Co0.5Mg0.5La0.03Fe1.97O4 (CMLF1), Co0.5Mg0.5La0.06Fe1.94O4 (CMLF2), Co0.5Mg0.5La0.09Fe1.91O4 (CMLF3), Co0.5Mg0.5La0.12Fe1.88O4 (CMLF4), and Co0.5Mg0.5La0.15Fe1.85O4 (CMLF5). A sequence of characterizations, including XRD, STEM, and UV–Vis-DRS, was exploited to examine the structure, morphology, constituent elements, and optical features of the CMLF ferrite nanoparticles. Despite the substitution process, an amazing decrement result for the lattice parameter (8.3748 to 8.3610 Å) and crystallite size (21.87 to 13.95 nm) is a large La cation at the expense of a smaller Fe one. The band-gap behavior of the CMLF nanoferrites is unique; it increases from 1.528 eV at the CMLF0 to 1.547 eV at the CMLF3 and decreases to 1.526 eV at the CMLF4 and 1.520 eV at the CMLF5. Two justifications accounted for this behavior. The nanoferrite CMLF5 has the highest photodegradation efficiency, 96.09 %, after 60 minutes. Three hypotheses were introduced to explain this result. After five cycles, the degradation efficiency of the nanoferrite CMLF5 maintained its high performance with 95.09 %, 94.87 %, 94.76 %, 93.59 %, and 93.44 %, respectively. These outcomes validate the outstanding photocatalytic efficiency, recyclability, and stability of the CMLF5 photocatalyst in its task to degrade the harmful MB dye, making it acceptable for wastewater treatment applications.

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Polybenzoxazine/Mg–Zn nano-ferrite composites: preparation, identification, and magnetic properties

et al. 2021

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AC conductivity, complex impedance and photocatalytic applications of Co2+ substituted Mg–Zn nanoferrite

Cited by 25 publications

References 35 publications

Influence of Zinc Substitution on the Structural, Dielectric, and Gas-Sensing Properties of Mg_1–xZn_xFe₂O₄ Nanoparticles

Influence of Zinc Substitution on the Structural, Dielectric, and Gas-Sensing Properties of Mg_1–xZn_xFe₂O₄ Nanoparticles

Eco-friendly Co-Mg-La nanoferrites for an efficient MB removal for wastewater treatment applications

Polybenzoxazine/Mg–Zn nano-ferrite composites: preparation, identification, and magnetic properties

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AC conductivity, complex impedance and photocatalytic applications of Co2+ substituted Mg–Zn nanoferrite

Cited by 25 publications

References 35 publications

Influence of Zinc Substitution on the Structural, Dielectric, and Gas-Sensing Properties of Mg1–xZnxFe2O4 Nanoparticles

Influence of Zinc Substitution on the Structural, Dielectric, and Gas-Sensing Properties of Mg1–xZnxFe2O4 Nanoparticles

Eco-friendly Co-Mg-La nanoferrites for an efficient MB removal for wastewater treatment applications

Polybenzoxazine/Mg–Zn nano-ferrite composites: preparation, identification, and magnetic properties

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Influence of Zinc Substitution on the Structural, Dielectric, and Gas-Sensing Properties of Mg_1–xZn_xFe₂O₄ Nanoparticles

Influence of Zinc Substitution on the Structural, Dielectric, and Gas-Sensing Properties of Mg_1–xZn_xFe₂O₄ Nanoparticles