Investigation of magnetite particle characteristics in relation to crystallization pathways

Kristiansen, Andreas Bogen; Church, Nathan; Ucar, Seniz

doi:10.1016/j.powtec.2022.118145

Cited by 8 publications

(3 citation statements)

References 46 publications

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“…Organic compounds, whether natural or engineered, have been utilized in various forms, such as small organics or large polymers, to modify the properties of magnetite by affecting the iron ions, bulk intermediates, and nanocrystals. ,,− Acetone, cationic ethylenediamine, and anionic acetic acid can strongly bind with iron ions, inhibiting the nucleation of magnetite and yielding lepidocrocite and akaganeite . Small polyol molecules containing hydroxyl groups can complex with the intermediates of magnetite.…”

Section: Strategies For Modulating Magnetite Crystallizationmentioning

confidence: 99%

“…The recent advances regarding magnetite formation and crystallization theory have complicated magnetite design and synthesis. While a few examples have shown the modulation of the physicochemical properties of intermediates during the crystallization for designing magnetite, ,,, discrepancies in their properties and transformation mechanisms still exist, possibly due to the diversity of synthesis methods and conditions. − Moreover, previous studies have mainly focused on a particular stage of crystallization, such as the phase composition of various intermediates or the growth process of magnetite nanocrystals . However, a complete picture of the crystallization pathway of magnetite remains elusive, including the formation orders of intermediates and the mechanisms of their evolution and conversion to magnetite.…”

Section: Introductionmentioning

confidence: 99%

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Recent Advances in Magnetite Crystallization: Pathway, Modulation, and Characterization

Shi

Feng

et al. 2023

Crystal Growth & Design

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Magnetite has wide applications in the fields of environment, biomedicine, and energy storage. Understanding the crystallization process of magnetite will improve the design and control of its properties. However, the challenge lies in determining the crystallization pathway of magnetite due to its nanosized and unstable intermediates. Recent developments in the in situ characterization techniques have shed light on this process, which has rarely been elucidated systematically. This review builds the correlation between the typical synthesis methods and the corresponding properties of magnetite. It also outlines a general multistage crystallization pathway involving a series of intermediates and explains how various strategies (e.g., pH and additives) modulate magnetite properties by influencing its intermediates during crystallization. To better illustrate published observations and reconcile conflicting perspectives, classical and state-of-the-art crystallization theories will be incorporated into each aspect. Moreover, this review highlights the importance of in situ characterization techniques, which enables the precise observation of crystallization processes. The goal of this review is to provide a fundamental understanding of magnetite crystallization and to guide the bottom-up design of magnetic materials for diverse applications.

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Section: Strategies For Modulating Magnetite Crystallizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Recent Advances in Magnetite Crystallization: Pathway, Modulation, and Characterization

Shi

Feng

et al. 2023

Crystal Growth & Design

View full text Add to dashboard Cite

show abstract

“…Meanwhile, the morphology of IONPs generated through coprecipitation is challenging to regulate due to the complex intermediate phase conversion and a series of physical and chemical processes. − The correlation between the structure and performance of IONPs has emerged as a focal point in current research. ,, As an essential parameter of the structure, morphology has a profound impact on the performance of nanoparticles. Anisotropic-shaped IONPs exhibit higher performance in MRI. − The changes in the morphology of IONPs can lead to an increase in the nonuniformity and disturbance area of the excitation magnetic field.…”

Section: Introductionmentioning

confidence: 99%

Polyhedral Magnetic Nanoparticles of High Magnetization Synthesized by Hydrocooling and Magnetically Internal Heating Coprecipitation: Implications for Magnetic Resonance Imaging

Zhang,

Deng,

Yao

et al. 2024

ACS Appl. Nano Mater.

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The coprecipitation method is widely recognized as a green, biocompatible, and low-cost synthetic pathway. However, the conventional coprecipitation approach used for generating iron oxide nanoparticles (IONPs) yields particles with inadequate crystallinity and magnetism and challenges in controlling their morphology. These limitations restrict the potential uses of IONPs in magnetic resonance imaging (MRI). This study introduces a technique called hydrocooling and magnetically internal heating coprecipitation (HMIHC) to address these limitations and enhance the MRI performance of IONPs. The introduction of an alternating magnetic field (AMF) accelerates the self-ripening process of IONPs and facilitates an ordered arrangement of magnetic moments within the IONPs. Simultaneously, precise control over the phase change is achieved by gradually introducing a NaOH solution, leading to the synthesis of polyhedral IONPs. The polyhedral IONPs produced via HMIHC exhibit extraordinary magnetism and a high r 2 value, and these IONPs exhibit excellent MRI capabilities. This research reveals the significant potential of HMIHC in the production of magnetic nanomaterials for MRI.

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Use of magnetic nanoparticles of iron oxide and their derivatives in the adsorption of rhodamine 6G and rhodamine B dyes

Damasceno,

da Silva,

Rodrigues

et al. 2024

Journal of Alloys and Compounds

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Investigation of magnetite particle characteristics in relation to crystallization pathways

Cited by 8 publications

References 46 publications

Recent Advances in Magnetite Crystallization: Pathway, Modulation, and Characterization

Recent Advances in Magnetite Crystallization: Pathway, Modulation, and Characterization

Polyhedral Magnetic Nanoparticles of High Magnetization Synthesized by Hydrocooling and Magnetically Internal Heating Coprecipitation: Implications for Magnetic Resonance Imaging

Use of magnetic nanoparticles of iron oxide and their derivatives in the adsorption of rhodamine 6G and rhodamine B dyes

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