Synthesis of NiF2 and NiF2·4H2O Nanoparticles by Microemulsion and Their Self-Assembly

Ullah, Hameed; Batisse, Nicolas; Guérin, Katia; Rogez, Guillaume; Bonnet, Pierre

doi:10.1021/acs.langmuir.0c00889

Cited by 5 publications

(4 citation statements)

References 76 publications

(182 reference statements)

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“…Quntachrome Instrument was used to investigate the physisorption measurement using nitrogen gas at 77 K. Nitrogen sorption isotherms were measured at 77 K on the nickel (II) MOF-type supramolecule [ 10 ] to evaluate the pore size [ 9], specific surface area [ 12 ], pore volume, and pore size distribution [ 6 ]. To get rid of guest solvent molecules, the compound was degassed at room temperature for 24 h before obtaining sorption isotherms measurements.…”

Section: Methodsmentioning

confidence: 99%

Homonuclear nickel(II) metal-organic framework-type supramolecule: adsorption and emission properties

MBONU¹,

ABIOLA²,

BAWA³

2022

Turkish Journal of Chemistry

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Coordination-driven self-assembly of nickel (II) ions with equimolar amounts of 1, 10 phenanthroline, and benzoic acid was used to create homonuclear nickel (II) MOF-type supramolecule. Single crystal X-ray diffraction, scanning electron microscopy, differential scanning calorimetry, photoluminescence measurement, FT-IR, UV-visible spectroscopy, and nitrogen physisorption measurement were used to characterize the compound. The single crystal X-ray diffraction study reveals that the synthesized compound is two-dimensional with pores in the structure. The homonuclear nickel (II) MOF-type supramolecule crystallized in a triclinic crystal system, with space group P-1 (No.2) and unit cell parameters a = 9.2053(4) Ǻ, b = 13.2964(5) Ǻ, c = 15.8998(6) Ǻ, α = 66.296(2) °, β = 89.400(2) °, γ = 89.441(2) °. The crystal structure result shows π-π and intermolecular interactions between adjacent 1, 10-phenanthroline molecules. DSC result showed a gradual decomposition confirming thermal stability of the compound. The emission (468 nm) spectrum result shows energy peaks of a typical multiphonon phase, indicating luminescence process. The surface topology and single absorption maximum at 308 nm reveal formation of a distorted octahedral structure. Brunauer–Emmett–Teller and Langmuir surface area results 383.741 and 975.830 m 2 g −1 , respectively, indicate high adsorption capacity. Langmuir isotherm model result of the compound shows an efficient adsorption property for storing energy. The excellent nickel (II) MOF-type supramolecule adsorption capacity and emission property opened the door to its use in energy storage applications especially in photovoltaic cells.

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Section: Methodsmentioning

confidence: 99%

Homonuclear nickel(II) metal-organic framework-type supramolecule: adsorption and emission properties

MBONU¹,

ABIOLA²,

BAWA³

2022

Turkish Journal of Chemistry

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“…The synthesis and study of nanocomposites containing substance nanoparticles in some matrices is of great interest. Much attention to such samples is due to the fact that nanoparticles have unique properties [1] - [5]. These properties can be individually manifested or make their own special contribution to the properties of nanocomposites [1][2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

“…Much attention to such samples is due to the fact that nanoparticles have unique properties [1] - [5]. These properties can be individually manifested or make their own special contribution to the properties of nanocomposites [1][2][3][4][5][6]. In this work, we synthesized and studied a nanocomposite containing nickel fluoride nanoparticles with a size of about 5 nm scattered in a nanosized carbon-fluorocarbon matrix.…”

Section: Introductionmentioning

confidence: 99%

“…At temperatures below the Néel temperature, nickel fluoride is a canted rutile-structure antiferromagnet characterized by specific relativistic Dzyaloshinsky-Moriya interaction and exhibits weak ferromagnetism [7,8]. NiF2 has an increased magneto optic coupling coefficient [9], NiF2 is attracting attention as conversion reaction material for Li ion batteries due to its comparatively high voltage (2.96 V) and specific capacity (554 mAh/g) [ 5,7,10,11], NiF2 is a cathode material for thermal batteries with a high specific power [12], NiF2 nanoparticles acted as effective pinning centers leading to enhancement of 𝐽𝑐 in the superconductor Bi-2223 system [13], NiF2 is the efficient electrode material with high window potential of 1.8 V for high energy and power density asymmetric supercapacitor [14], in nanosized form, nickel fluoride has special magnetic properties, the Néel temperature shifts, an exchange bias interaction is observed, nickel fluoride nanoparticles can be in a superparamagnetic state [5,7], at all. Due to these and other properties, nickel fluoride can find application in various devices and is interesting for fundamental research.…”

Section: Introductionmentioning

confidence: 99%

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Nanocomposite Obtained in the Plasma of a Pulsed High Voltage Discharge Using Nickel Electrodes and PTFE

et al. 2021

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In the plasma of pulsed high-voltage discharge, initiated between nickel electrodes in air, when the fluoroplastic is placed in the discharge gap, powder nanocomposite material has been synthesized. The nanocomposite contains NiF2 nanoparticles less than 5 nm in size, dispersed in a matrix consisting of carbon and fluorocarbon substances. The carbonaceous substance contains nanoscale disordered graphite-like regions. The fluorocarbon component of the composite contains fragments of PTFE molecules and fluorocarbon molecular fragments that differ in structure from PTFE molecule’s structure. After annealing the composite in air at 773 K, the initial nanocomposite is transformed into a nanocomposite containing nanosized PTFE and nanoparticles of NiF2 less than 5 nm in size, scattered in a matrix composed of nanographite and low-layer nanosized graphene, after aneling at 1173 K into a material containing NiO nanoparticles less than 10 nm in size. After annealing of the initial nanocomposite in argon atmosphere at 1073 K, the obtained nanocomposite contains Ni nanoparticles with sizes less than 5 nm and carbon and fluorocarbon components. The magnetic susceptibility of the unannealed nanocomposite is investigated. A transition to the antiferromagnetic phase at 73 K was detected. At T = 4K, exchange bias interaction of the AFM / FM type takes place in the composite. There is divergence of the FC and ZFC curves, which can be explained by the presence of a superparamagnetic phase or a spin glass phase in the sample. The field dependences of the magnetic susceptibility measured at T = 300 K show sharp changes that occur at certain values of the magnetic field. Elucidation of the nature of these changes requires additional research.

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Preparation of highly active and durable electrodes for alkaline water electrolysis by anodizing of commercial FeNi and FeNiCo alloys

Zetao,

Quintero,

Kitano

et al. 2024

Electrochimica Acta

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Synthesis of NiF₂ and NiF₂·4H₂O Nanoparticles by Microemulsion and Their Self-Assembly

Cited by 5 publications

References 76 publications

Homonuclear nickel(II) metal-organic framework-type supramolecule: adsorption and emission properties

Homonuclear nickel(II) metal-organic framework-type supramolecule: adsorption and emission properties

Nanocomposite Obtained in the Plasma of a Pulsed High Voltage Discharge Using Nickel Electrodes and PTFE

Preparation of highly active and durable electrodes for alkaline water electrolysis by anodizing of commercial FeNi and FeNiCo alloys

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