Structural and magnetic properties of nanocrystalline equi-atomic spinel high-entropy oxide (AlCoFeMnNi)3O4 synthesised by microwave assisted co-precipitation technique

Shaw, S.K.; Gangwar, Anshu; Sharma, Ankur; Alla, S.K.; Kavita, S.; Vasundhara, М.; Meena, Sher Singh; Maiti, Pralay; Prasad, N.K.

doi:10.1016/j.jallcom.2021.160269

Cited by 40 publications

(13 citation statements)

References 48 publications

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“…Figure 1 b represents two characteristic peaks of Ni2p at 854.59 and 856.78 eV, which correspond to 2p 3/2 Ni 2+ and Ni 3+ peaks, respectively [ 24 , 25 , 26 , 27 ]. Additionally, the corresponding satellite peak of the 2p 3/2 was observed at a binding energy of 861.23 eV [ 28 ]. The 872.48, 874.86, and 879.45 eV peaks correspond to 2p 1/2 and satellite of Ni2p 1/2 , respectively [ 29 , 30 , 31 , 32 , 33 ].…”

Section: Resultsmentioning

confidence: 99%

Polyaniline-Supported Nickel Oxide Flower for Efficient Nitrite Electrochemical Detection in Water

et al. 2023

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A modified electrode with conducting polymer (Polyaniline) and NiO nanoflowers was prepared to detect nitrite ions in drinking water. A simple method was used to prepare the NiO nanoflower (NiOnF). Several techniques characterized the as-prepared NiOnF to determine the chemical structure and surface morphology of the NiO, such as XRD, XPS, FT-IR, and TGA. The activity of the electrode toward nitrite sensing was investigated over a wide range of pH (i.e., 2 to 10). The amperometry method was used to determine the linear detection range and limit. Accordingly, the modified electrode GC/PANI/NiOnf showed a linear range of detection at 0.1–1 µM and 1–500 µM. At the same time, the limit of detection (LOD) was 9.7 and 64 nM for low and high concentrations, respectively. Furthermore, the kinetic characteristics of nitrite, such as diffusion and transport coefficients, were investigated in various media. Moreover, the charge transfer resistance was utilized for nitrite electrooxidation in different pH values by the electrochemical impedance technique (EIS). The anti-interfering criteria of the modified surfaces were utilized in the existence of many interfering cations in water (e.g., K+, Na+, Cu2+, Zn2+, Ba2+, Ca2+, Cr2+, Cd2+, Pd2+). A real sample of the Nile River was spiked with nitrite to study the activity of the electrode in a real case sample (response time ~4 s). The interaction between nitrite ions and NiO{100} surface was studied using DFT calculations as a function of adsorption energy.

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Section: Resultsmentioning

confidence: 99%

Polyaniline-Supported Nickel Oxide Flower for Efficient Nitrite Electrochemical Detection in Water

et al. 2023

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“…The magnetic properties of HESOs have already been summarized. 59,60 Spinel oxides with composition (Cr 1/5 Mn 1/5 Fe 1/5 Co 1/5 Ni 1/5 ) 3 O 4 , equal to that of CoNi NFs, have attracted some attention. The literature magnetic data (Table 4) are in general agreement with those recorded for our CoNi NFs but they were rarely discussed in detail.…”

Section: Discussion Of the Magnetic Properties And Structurementioning

confidence: 99%

“…52,55,58 The magnetic properties of HESOs have already been summarized. 59,60 They are governed by the oxido-mediated superexchange interactions within and between the two cation sublattices. The magnetic properties of (Cr 1/5 Mn 1/5 Fe 1/5 Co 1/5 Ni 1/5 ) 3 O 4 , in both bulk and nanostructured form, 61–65 have been the subject of several studies, which have firmly established that (Cr 1/5 Mn 1/5 Fe 1/5 Co 1/5 Ni 1/5 ) 3 O 4 is a ferrimagnet below ca.…”

Section: Introductionmentioning

confidence: 99%

Structure and magnetism of electrospun porous high-entropy (Cr_1/5Mn_1/5Fe_1/5Co_1/5Ni_1/5)₃O₄, (Cr_1/5Mn_1/5Fe_1/5Co_1/5Zn_1/5)₃O₄ and (Cr_1/5Mn_1/5Fe_1/5Ni_1/5Zn_1/5)₃O₄ spinel oxide nanofibers

Ponti¹,

Triolo

Petrovičovà

et al. 2023

Phys. Chem. Chem. Phys.

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“…The magnetic properties of spinel-type HEOs are of great interest. [139][140][141][142][143][144] Similar to perovskites (ABO 3 ), spinels (AB 2 O 4 ) include two different cation sites, and the inter-site magnetic interactions are important. The interaction between A-and Bsite cation can give rise to collinear spins, Néel ferrimagnetism, and net magnetization sensitivity for the distribution of cation sites.…”

Section: Magnetic Propertiesmentioning

confidence: 99%

Physicochemical Properties of High‐Entropy Oxides

Chen

Sun

et al. 2022

The Chemical Record

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The development of industry has triggered an increasingly severe demand for new functional materials. In recent years, researches on high‐entropy oxides (HEOs) are more comprehensive and in‐depth, and their fascinating properties are gradually known to the public. The unique elemental synergistic effect and lattice distortion endow the high‐entropy family with various untapped potential, and wide application fields and outstanding performance of HEOs make them candidates for future materials. In this review, the concept, structure, and synthesis of HEOs are firstly highlighted. Secondly, a variety of excellent properties and applications in the fields of mechanics, electrics, thermotics, optics and magnetics are summarized. This work provides a comprehensive overview about HEOs, facilitating the development of modern functionalities of the high‐entropy family.

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Structural and magnetic properties of nanocrystalline equi-atomic spinel high-entropy oxide (AlCoFeMnNi)3O4 synthesised by microwave assisted co-precipitation technique

Cited by 40 publications

References 48 publications

Polyaniline-Supported Nickel Oxide Flower for Efficient Nitrite Electrochemical Detection in Water

Polyaniline-Supported Nickel Oxide Flower for Efficient Nitrite Electrochemical Detection in Water

Structure and magnetism of electrospun porous high-entropy (Cr_1/5Mn_1/5Fe_1/5Co_1/5Ni_1/5)₃O₄, (Cr_1/5Mn_1/5Fe_1/5Co_1/5Zn_1/5)₃O₄ and (Cr_1/5Mn_1/5Fe_1/5Ni_1/5Zn_1/5)₃O₄ spinel oxide nanofibers

Physicochemical Properties of High‐Entropy Oxides

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Structural and magnetic properties of nanocrystalline equi-atomic spinel high-entropy oxide (AlCoFeMnNi)3O4 synthesised by microwave assisted co-precipitation technique

Cited by 40 publications

References 48 publications

Polyaniline-Supported Nickel Oxide Flower for Efficient Nitrite Electrochemical Detection in Water

Polyaniline-Supported Nickel Oxide Flower for Efficient Nitrite Electrochemical Detection in Water

Structure and magnetism of electrospun porous high-entropy (Cr1/5Mn1/5Fe1/5Co1/5Ni1/5)3O4, (Cr1/5Mn1/5Fe1/5Co1/5Zn1/5)3O4 and (Cr1/5Mn1/5Fe1/5Ni1/5Zn1/5)3O4 spinel oxide nanofibers

Physicochemical Properties of High‐Entropy Oxides

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Structure and magnetism of electrospun porous high-entropy (Cr_1/5Mn_1/5Fe_1/5Co_1/5Ni_1/5)₃O₄, (Cr_1/5Mn_1/5Fe_1/5Co_1/5Zn_1/5)₃O₄ and (Cr_1/5Mn_1/5Fe_1/5Ni_1/5Zn_1/5)₃O₄ spinel oxide nanofibers