The properties of nickel aluminate nanoparticles prepared by sol–gel and impregnation methods

Komeili, Samane; Taeb, Abbas; Ravanchi, Maryam Takht; Fard, Maryam Rahimi

doi:10.1007/s11164-016-2568-x

Cited by 10 publications

(4 citation statements)

References 19 publications

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“…Moreover, Various types of metal aluminates (such as NiAl 2 O 4 , CoAl 2 O 4 ) and ferrites (such as MnxZn(1-x)Fe 2 O 4 ) are used to prepare such flexible materials 19 , 20 . Applications of such flexible materials are included in magnetic materials, pigments, sensors, catalysts, carriers, ceramic pigment, gas sensor, color TV tubes and solar absorber 21 , 22 . On the basis of components, the market is segmented into flexible displays, flexible battery, flexible sensors, flexible memory, photovoltaic and others.…”

Section: Introductionmentioning

confidence: 99%

Preparation of NiAl2O4-Based Flexible Substrates for Metamaterials with Negative Dielectric Properties

Rahman

Ahamed

Faruque

et al. 2018

Sci Rep

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Various techniques are commonly used to produce nano-crystalline NiAl2O4 materials; however, their practical applications in the microwave region remain very limited. In this work, flexible substrates for metamaterials containing two different concentrations of NiAl2O4 (labelled Ni36 and Ni42) have been synthesised using a sol-gel method. The formation of spinel structures in the synthesised materials is confirmed, and their crystalline sizes are determined using scanning electron microscopy, X-ray diffraction, and energy dispersive X-ray techniques. The dielectric properties, conductivities, loss tangents, and other parameters of the NiAl2O4-based substrates are analysed to evaluate their applicability as dielectric materials for the microwave frequency range. The obtained results show that the fabricated Ni36 and Ni42 nickel aluminates possess dielectric constants of 4.94 and 4.97 and loss tangents of 0.01 and 0.007, respectively; in addition, they exhibit high flexibility and light weight, which make them suitable for applications as metamaterial substrates. The synthesised structures are also validated experimentally using a commercially available electromagnetic simulator; as a result, double negative behaviour of the flexible metamaterials has been observed. Furthermore, it is found that the prepared NiAl2O4 substrates can be used in the S-, C-, and X-bands of the microwave frequency region.

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Section: Introductionmentioning

confidence: 99%

Preparation of NiAl2O4-Based Flexible Substrates for Metamaterials with Negative Dielectric Properties

Rahman

Ahamed

Faruque

et al. 2018

Sci Rep

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“…6,8 It is known that the degree of inversion of spinel structures determines the physicochemical properties of the material. 9 NiAl 2 O 4 has been made by many different methods such as coprecipitation, 7,10,11 sol-gel 6,12,13 and impregnation. 7,11,12 The property of NiAl 2 O 4 materials is highly dependent on the preparation method, which is benecial for different uses.…”

Section: Introductionmentioning

confidence: 99%

“…9 NiAl 2 O 4 has been made by many different methods such as coprecipitation, 7,10,11 sol-gel 6,12,13 and impregnation. 7,11,12 The property of NiAl 2 O 4 materials is highly dependent on the preparation method, which is benecial for different uses. Using mechanochemical methods to produce mixed oxides with a spinel structure has been studied more in recent years.…”

Section: Introductionmentioning

confidence: 99%

Mechanochemical preparation of a modified NiAl₂O₄structure

et al. 2023

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“…Nickel aluminate (NiAl 2 O 4 ) is a kind of spinel aluminate with partial antispinel structure, which is a special kind of spinel aluminate [58]. This special structure makes NiAl 2 O 4 lattice easy to produce vacancies, defects and other special structures, but does not affect its high stability, so it has been favored by researchers in the field of catalysis [59][60][61]. It is worth noting that different synthesis methods tend to affect the physicochemical properties of NiAl 2 O 4 .…”

Section: Introductionmentioning

confidence: 99%

Spinel NiAl2O4 Based Catalysts: Past, Present and Future

Wang

Gao

2023

J. Environ. Sci. Eng. Technol.

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Nickel aluminate (NiAl2O4) is a kind of partially antispinel structure oxide. Because of its excellent electronic structure and energy level structure, high thermal stability and high charge transfer and separation efficiency, it has a potential application prospect in catalytic oxidation, photocatalysis, adsorption and other fields. In this paper, the synthesis methods of different NiAl2O4-based catalysts, their applications in catalytic field and related catalytic mechanisms are reviewed from the appearance of single component NiAl2O4, ion-doped NiAl2O4 and multiheterojunction NiAl2O4 catalysts. The application of NiAl2O4 photocatalysts in the field of photocatalysis has gradually shifted from the degradation of dyes to the degradation of drugs, so its photocatalytic mechanism and degradation path need to be further studied. This review points out the direction for the future research of NiAl2O4 based catalysts in the field of catalysis.

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The properties of nickel aluminate nanoparticles prepared by sol–gel and impregnation methods

Cited by 10 publications

References 19 publications

Preparation of NiAl2O4-Based Flexible Substrates for Metamaterials with Negative Dielectric Properties

Preparation of NiAl2O4-Based Flexible Substrates for Metamaterials with Negative Dielectric Properties

Mechanochemical preparation of a modified NiAl₂O₄structure

Spinel NiAl2O4 Based Catalysts: Past, Present and Future

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The properties of nickel aluminate nanoparticles prepared by sol–gel and impregnation methods

Cited by 10 publications

References 19 publications

Preparation of NiAl2O4-Based Flexible Substrates for Metamaterials with Negative Dielectric Properties

Preparation of NiAl2O4-Based Flexible Substrates for Metamaterials with Negative Dielectric Properties

Mechanochemical preparation of a modified NiAl2O4structure

Spinel NiAl2O4 Based Catalysts: Past, Present and Future

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Product

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Mechanochemical preparation of a modified NiAl₂O₄structure