Pressure-induced structural, electronic, and magnetic evolution in cubic inverse spinel NiFe2O4, an ab-initio study

Naveed-Ul-Haq, M.; Hussain, Shahzad

doi:10.1007/s00339-021-05176-3

Cited by 8 publications

(2 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is known that MgFe 2 O 4 is a soft magnetic semiconducting material with a normal spinel structure [17]. NiFe 2 O 4 , having an inverse spinel structure, is a soft magnetic semiconducting material [18]. Whereas CoFe 2 O 4 , characterized by its inverse spinel structure, is classified as a semi-hard material [19].…”

Section: Introductionmentioning

confidence: 99%

Influence of Lanthanum Doping on the Photocatalytic and Antibacterial Capacities of Mg0.33Ni0.33Co0.33Fe2O4 Nanoparticles

et al. 2023

View full text Add to dashboard Cite

The increase in environmental pollution, especially water pollution, has intensified the requirement for new strategies for the treatment of water sources. Furthermore, the improved properties of nano-ferrites permit their usage in wastewater treatment. In this regard, novel Mg0.33Ni0.33Co0.33LaxFe2−xO4 nanoparticles (NPs), where 0.00≤x≤0.08, were synthesized to test their photocatalytic, antibacterial and antibiofilm activities. The structural and optical properties of the prepared NPs were investigated by X-ray powder diffraction (XRD), transmission electron microscopy (TEM), UV-Vis spectroscopy and photoluminescence (PL) analysis. As La content increases, the bandgap energy increases, whereas the particle size decreases. The photocatalytic activity of the prepared NPs is evaluated by the degradation of methylene blue (MB) dye under sunlight irradiation. Superior activity is exhibited by Mg0.33Ni0.33Co0.33La0.01Fe1.99O4 NPs. The influence of catalyst dosage, pH, temperature and addition of graphene (Gr) on the photodegradation reaction was studied. Increasing the pH and temperature improved the rate of the photodegradation reaction. The antibacterial and antibiofilm activities of the NPs were assessed against Escherichia coli, Leclercia adecarboxylata, Staphylococcus aureus and Enterococcus faecium. Mg0.33Ni0.33Co0.33Fe2O4 NPs inhibited bacterial growth. They had bacteriostatic activity on all isolates, with a greater effect on Gram-positive bacteria. All tested nano-ferrites had significant antibiofilm activities against some biofilms.

show abstract

Section: Introductionmentioning

confidence: 99%

Influence of Lanthanum Doping on the Photocatalytic and Antibacterial Capacities of Mg0.33Ni0.33Co0.33Fe2O4 Nanoparticles

et al. 2023

View full text Add to dashboard Cite

show abstract

“…NFO is not known to show radiative recombination, implying that it has an indirect band gap. Among the previous theoretical reports, − we adopted the Naveed-Ul-Haq and Hussian methods to describe the indirect band gap properties of NFO . We adopted the Hubbard U correction method with a generalized gradient approximation (GGA+U) in the form proposed by Perdew, Burke, and Ernzerhof (PBE) for Solid (PBE-Sol) as implemented in the Vienna Ab initio Simulation Package (VASP).…”

Section: Resultsmentioning

confidence: 99%

Improved Oxygen Evolution Reaction Kinetics with Titanium Incorporated Nickel Ferrite for Efficient Anion Exchange Membrane Electrolysis

Yoon,

Lee,

Jeong

et al. 2024

ACS Catal.

View full text Add to dashboard Cite

Anion exchange membrane water electrolysis (AEMWE) is attracting attention as a next-generation technology for producing hydrogen from water. To maximize the efficiency of AEMWE systems, electrodes fabricated using nonprecious metal catalysts that possess high activity and durability are required to make the AEMWE system operable in alkaline environments. In this study, we investigate the effect of Ti impurities on the oxygen evolution reaction (OER) kinetics of NiFe 2 O 4 (NFO). Ti impurities can improve the electrical conductivity of NFO and accelerate the OER kinetics. The overpotential of the fabricated OER anode displays current densities of 10 and 100 mA cm −2 at 230 and 300 mV, respectively, which are lower overpotentials than those of pristine NFO (10 and 100 mA cm −2 at 260 and 380 mV). The AEMWE single-cell with a Ti-NFO electrode as the anode shows high performance (0.5 A cm −2 at 1.61 V Cell and 1.0 A cm −2 at 1.73 V Cell ) and durability (at 0.5 A cm −2 for 500 h). Thus, it outperforms most of the reported single-cells assembled using NiFe-based catalysts. This study demonstrates the successful utilization of Ti impurities in the mass production of catalysts, addressing the intrinsic electrical conductivity issues of NFO for AEMWE systems.

show abstract

Optical characterization of SnS nanowires by chemical vapor deposition method: A combined experimental and DFT study

Parveen,

Naveed-Ul-Haq,

Hassan

et al. 2024

Chemical Physics Letters

View full text Add to dashboard Cite

Pressure-induced structural, electronic, and magnetic evolution in cubic inverse spinel NiFe2O4, an ab-initio study

Cited by 8 publications

References 44 publications

Influence of Lanthanum Doping on the Photocatalytic and Antibacterial Capacities of Mg0.33Ni0.33Co0.33Fe2O4 Nanoparticles

Influence of Lanthanum Doping on the Photocatalytic and Antibacterial Capacities of Mg0.33Ni0.33Co0.33Fe2O4 Nanoparticles

Improved Oxygen Evolution Reaction Kinetics with Titanium Incorporated Nickel Ferrite for Efficient Anion Exchange Membrane Electrolysis

Optical characterization of SnS nanowires by chemical vapor deposition method: A combined experimental and DFT study

Contact Info

Product

Resources

About