Unveiling the correlation between structural and magnetic ordering in nano Co1−xNixTeO4

Patel, Akhilesh Kumar; Samatham, S. Shanmukharao; Rani, Ekta; Suresh, K. A.; Singh, Harishchandra

doi:10.1039/d2cp05592a

Cited by 3 publications

(4 citation statements)

References 27 publications

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Section: Resultsmentioning

confidence: 99%

“…The X-ray diffraction pattern for the as-grown sample does not reveal any specific and narrow peaks, but rather a broad peak suggesting the amorphous nature of the as-grown sample. 20 Figure 2a shows the XRD patterns for NTO-3.6 and NTO-6.0. The XRD patterns for NTO-3.6 and NTO-6.0 exhibit sharp peaks, indicating the crystallinity of calcined samples.…”

Section: Structural Investigationmentioning

confidence: 99%

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Nickel Tellurate Nanorods and Nanoparticles for the Oxygen Evolution Reaction

Singh,

Veijola-Kara,

Rani

et al. 2024

ACS Appl. Nano Mater.

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Materials that lead to devices with tunable responses to the morphology are a potential opportunity. Tellurium, a growing material class possessing higher electronic conductivity, has recently been seen to exhibit the same in transition-metal-based complexes when combined toward wider energy applications. However, it has rarely been engineered and implemented for morphology-dependent low-dimensional (LD) structures for catalytic reactions. Herein, for the first time, we provide a novel approach for designing dimension variable nano nickel tellurate (NTO), such as nanorods (NRs), through pH assisted anisotropic transformation from the zero-dimensional amorphous counterpart. The resulting NRs have an average width of 5–30 nm and lengths in micrometers. Mechanistic studies show that the morphology of the final product is determined by the pH value used. In line with structural phase analysis, average core-level spectroscopic and local spectro-microscopic determinations confirm the formation of Ni2+- and Te4+/Te6+-based NTO NRs via electronic structure investigation and covalency. Our study not only provides a fresh approach to achieve varied NTO NRs but also offers insights into the growth reaction mechanisms of anisotropic transformation. The proposed facile design scheme can be optimized to synthesize any nanotellurates with morphological purity to promote the catalytic reactions through low-dimensional activity. As an example, these samples were tested for the oxygen evolution reaction.

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Section: Resultsmentioning

confidence: 99%

Section: Structural Investigationmentioning

confidence: 99%

Nickel Tellurate Nanorods and Nanoparticles for the Oxygen Evolution Reaction

Singh,

Veijola-Kara,

Rani

et al. 2024

ACS Appl. Nano Mater.

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“…Aerogels obtained from TMs (TMA) have been fruitful, although they were not straightforwardly synthesized until the 1990s. One of the TMAs that attracts the most interest is iron aerogels (FeAs) due to their magnetic properties, which have been promoted in recent decades due to their potential in fields such as medical diagnosis, catalysis, and sensors . The development of new synthesis methods to obtain FeAs was based on sol–gel methods previously studied in other systems, being necessary in many cases to use metal alkoxide compounds that are easily hydrolyzed. – Unfortunately, the conventional synthesis of FeA via sol–gel processes often requires toxic chemicals at different stages of the reaction, such as epoxides or epoxide-based proton scavengers to induce gelation. ,– In addition, long-lasting washing of the products, solvent-exchange processes, and post-treatments that can last for days are commonly required. ,,– On the other hand, another drawback of conventional FeA sol–gel synthesis routes is that the control of some properties such as crystallinity and magnetism is limited.…”

Section: Introductionmentioning

confidence: 99%

“…One of the TMAs that attracts the most interest is iron aerogels (FeAs) due to their magnetic properties, which have been promoted in recent decades due to their potential in fields such as medical diagnosis, catalysis, and sensors. 20 The development of new synthesis methods to obtain FeAs was based on sol–gel methods previously studied in other systems, being necessary in many cases to use metal alkoxide compounds that are easily hydrolyzed. 21 – 24 Unfortunately, the conventional synthesis of FeA via sol–gel processes often requires toxic chemicals at different stages of the reaction, such as epoxides or epoxide-based proton scavengers to induce gelation.…”

Section: Introductionmentioning

confidence: 99%

Microwave-Assisted Synthesis of Iron-Based Aerogels with Tailored Textural and Morphological Properties

González-Lavín,

Arenillas,

Rey-Raap

2023

ACS Appl. Nano Mater.

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Iron aerogels have been synthesized by microwave heating for the first time. Therefore, it is essential to optimize this synthesis process to evaluate the possibility of obtaining nanometric materials with tailored properties and fitting them to the needs of different applications. Herein, the effect of the ratio between reagents and the time of synthesis on the final textural, morphological, and structural properties has been evaluated. The micro–meso–macroporosity of the samples can be tailored by modifying the ratio between reagents, whereas the time of synthesis has only a slight effect on the microporosity. Both the proportion between reagents and the time of synthesis are essential to controlling the nanometric morphology, making it possible to obtain either cluster- or flake-type structures. Regarding the chemical and structural composition, the samples are mainly composed of iron(II) and iron(III) oxides. However, the percentage of iron(II) can be modulated by changing the ratio between reagents, which implies that it is possible to obtain materials from highly magnetic materials to materials without magnetic properties. This control over the properties of iron aerogels opens a new line of opportunities for the use of this type of material in several fields of applications such as electrochemistry, electrocatalysis, and electrical and electronic engineering.

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In-situ synthesized oxygen vacancy filled ZnS/Vo-ZnO heterojunction photocatalysts for efficient H2 production

Jadhav,

Mohite,

Lee

et al. 2023

Sustainable Materials and Technologies

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Unveiling the correlation between structural and magnetic ordering in nano Co_1−xNi_xTeO₄

Abstract: Nanomaterials with unique structures and exotic magnetic phenomena are always intriguing; however, the direct correlation of structural and magnetic ordering up to a few nanometers remains critical. We report structural...

Cited by 3 publications

References 27 publications

Nickel Tellurate Nanorods and Nanoparticles for the Oxygen Evolution Reaction

Nickel Tellurate Nanorods and Nanoparticles for the Oxygen Evolution Reaction

Microwave-Assisted Synthesis of Iron-Based Aerogels with Tailored Textural and Morphological Properties

In-situ synthesized oxygen vacancy filled ZnS/Vo-ZnO heterojunction photocatalysts for efficient H2 production

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