Role of Ni concentration on structural and magnetic properties of inverse spinel Ferrite

Adeela, N.; Naz, Shazia; Khan, Karim; Sagar, Rizwan Ur Rehman; Aslam, Sana; Wu, Dang

doi:10.1016/j.materresbull.2018.06.032

Cited by 24 publications

(11 citation statements)

References 30 publications

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“…GO is a highly oxidized type of G-NMs that contains hydroxyl, carbonyl, carboxyl, and epoxy functional groups. The occurrence of the oxygen functional groups at the edges and basal plane of the G-NSs transforms sp 2 -bound G-NSs into a hybrid of sp 2 and sp 3 C. The defects in the sp 3 regions alter the G-NS's natural conjugated structure, lowering its overall strength and conductivity. The existence of several functional groups in GO, on the other hand, promotes processability and creates a center of attention for a broad variety of uses as a multifunctional material.…”

Section: Preparation Of Graphenementioning

confidence: 99%

“…Carbon compounds provide a crucial and closely related role in sustaining life on earth, despite the fact that everyone must lead a ''low-carbon'' lifestyle. The three distinct hybridizations of carbon, namely, sp, sp 2 , and sp 3 , make it an extremely alluring element. 111 In the past two decades, research on full carbon materials (CMs) has accelerated at the cutting edge of synthetic organic chemistry.…”

Section: Introductionmentioning

confidence: 99%

“…Researchers today are producing novel two-dimensional (2D) CMs, and the application of these materials depend on the types of carbon atoms that are mixed with various morphologies, including fullerenes (0D, 1985), 112 carbon nanotubes (1D, CNT, 1991), 113 and graphene (3D, 2004), 114 as well as different characteristics. Different C-allotropes, such as CNTs, fullerene (sp 2 ), G (sp 2 ), and diamond (sp 3 ), have been created over the past two decades by the hybridization of various carbon atoms. These materials have been successfully used in a variety of applications.…”

Section: Introductionmentioning

confidence: 99%

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“…Spinel oxides are possible substitutes for precious metal ORR electrocatalysts because they have variable valences, flexible structure, and remarkable redox stability. They are also abundant, cheap, and easy to prepare [17][18][19]. The literature has well documented an improvement in the electrochemical and physicochemical properties of transition metal oxides brought about by a stoichiometric combination of Ni and Co [17,20].…”

Section: Introductionmentioning

confidence: 99%

“…They are also abundant, cheap, and easy to prepare [17][18][19]. The literature has well documented an improvement in the electrochemical and physicochemical properties of transition metal oxides brought about by a stoichiometric combination of Ni and Co [17,20]. The electrocatalytic properties of spinel oxides are based on the spinel lattice's electronic stability and geometric orientation.…”

Section: Introductionmentioning

confidence: 99%

Mn-Ni-Co-O Spinel Oxides towards Oxygen Reduction Reaction in Alkaline Medium: Mn0.5Ni0.5Co2O4/C Synergism and Cooperation

et al. 2021

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Mn-doped spinel oxides MnxNi1−xCo2O4 (x = 0, 0.3, 0.5, 0.7, and 1) were synthesized using the citric acid-assisted sol–gel method. The Mn0.5Ni0.5Co2O4 (x = 0.5) supported on carbon nanosheets, Mn0.5Ni0.5Co2O4/C, was also prepared using the same method employing NaCl and glucose as a template and carbon source, respectively, followed by pyrolysis under an inert atmosphere. The electrocatalytic oxygen reduction reaction (ORR) activity was performed in alkaline media. Cyclic voltammetry (CV) was used to investigate the oxygen reduction performance of MnxNi1−xCo2O4 (x = 0, 0.3, 0.5, 0.7, and 1), and Mn0.5Ni0.5Co2O4 was found to be the best-performing electrocatalyst. Upon supporting the Mn0.5Ni0.5Co2O4 on a carbon sheet, the electrocatalytic activity was significantly enhanced owing to its large surface area and the improved charge transfer brought about by the carbon support. Rotating disk electrode studies show that the ORR electrocatalytic activity of Mn0.5Ni0.5Co2O4/C proceeds via a four-electron pathway. Mn0.5Ni0.5Co2O4/C was found to possess E1/2(V) = 0.856, a current density of 5.54 mA cm−2, and a current loss of approximately 0.11% after 405 voltammetric scan cycles. This study suggests that the interesting electrocatalytic performance of multimetallic transition metal oxides can be further enhanced by supporting them on conductive carbon materials, which improve charge transfer and provide a more active surface area.

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Recent Progress in Emerging Novel MXenes Based Materials and their Fascinating Sensing Applications

Khan

Tareen

Iqbal

et al. 2023

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Early transition metals based 2D carbides, nitrides and carbonitrides nanomaterials are known as MXenes, a novel and extensive new class of 2D materials family. Since the first accidently synthesis based discovery of Ti3C2 in 2011, more than 50 additional compositions have been experimentally reported, including at least eight distinct synthesis methods and also more than 100 stoichiometries are theoretically studied. Due to its distinctive surface chemistry, graphene like shape, metallic conductivity, high hydrophilicity, outstanding mechanical and thermal properties, redox capacity and affordable with mass‐produced nature, this diverse MXenes are of tremendous scientific and technological significance. In this review, first we'll come across the MXene based nanomaterials possible synthesis methods, their advantages, limitations and future suggestions, new chemistry related to their selected properties and potential sensing applications, which will help us to explain why this family is growing very fast as compared to other 2D families. Secondly, problems that help to further improve commercialization of the MXene nanomaterials based sensors are examined, and many advances in the commercializing of the MXene nanomaterials based sensors are proposed. At the end, we'll go through the current challenges, limitations and future suggestions.

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Role of Ni concentration on structural and magnetic properties of inverse spinel Ferrite

Cited by 24 publications

References 30 publications

Recent advances in novel graphene: new horizons in renewable energy storage technologies

Recent advances in novel graphene: new horizons in renewable energy storage technologies

Mn-Ni-Co-O Spinel Oxides towards Oxygen Reduction Reaction in Alkaline Medium: Mn0.5Ni0.5Co2O4/C Synergism and Cooperation

Recent Progress in Emerging Novel MXenes Based Materials and their Fascinating Sensing Applications

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