Novel Formulation of Ionic Liquid-Based Ferrofluids: Investigation of the Magnetic Properties.

IF 3.7 2区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Langmuir Pub Date : 2025-05-07 DOI:10.1021/acs.langmuir.5c00403

Alessandro Talone,Pierfrancesco Maltoni,Michael Casale,Maryam Abdolrahimi,Sawssen Slimani,Diego Colombara,Luca Leoncino,Patrizia Imperatori,Sara Laureti,Gaspare Varvaro,Davide Peddis

引用次数: 0

Abstract

This study establishes a viable process to prepare hybrid nanomaterials comprising stable ionic liquid-based ferrofluids (IL-FFs) with tunable magnetic anisotropy and reduced water contamination, where the latter strongly decreases the colloidal stability of the system. Spinel iron oxide magnetic nanoparticles (MNPs) with different compositions (γ-Fe2O3, Co0.5Zn0.5Fe2O4, and CoFe2O4) and different magnetic anisotropies were synthesized by the polyol method. The particles were coated with dihydrocaffeic acid (DHCA) in tetrahydrofuran (THF) and subsequently transferred directly to 3-ethyl-1-methylimidazolium acetate (EMIMAc), exploring the synergy between intermolecular and covalent bonding to obtain stable dispersions. The evolution of magnetic properties from powder to IL-FFs systems was investigated, allowing us to highlight the synergistic influence of interparticle interaction and magnetic anisotropy on the magnetization dynamics of the nanoparticles.

查看原文本刊更多论文

离子液体基铁磁流体的新配方：磁性能研究。

本研究建立了一种可行的工艺来制备混合纳米材料，包括稳定的离子液体基铁磁流体（IL-FFs），具有可调的磁各向异性和减少的水污染，其中后者强烈降低了系统的胶体稳定性。采用多元醇法制备了不同成分（γ-Fe2O3、Co0.5Zn0.5Fe2O4和CoFe2O4）和不同磁性各向异性的尖晶石氧化铁磁性纳米颗粒（MNPs）。用四氢呋喃（THF）包裹二氢咖啡酸（DHCA），然后直接转移到3-乙基-1-甲基咪唑醋酸酯（EMIMAc）上，探索分子间和共价键之间的协同作用，以获得稳定的分散体。研究了从粉末到IL-FFs体系的磁性演变，使我们能够突出粒子间相互作用和磁性各向异性对纳米颗粒磁化动力学的协同影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Langmuir 化学-材料科学：综合

CiteScore

6.50

自引率

10.30%

发文量

1464

审稿时长

2.1 months

期刊介绍： Langmuir is an interdisciplinary journal publishing articles in the following subject categories: Colloids: surfactants and self-assembly, dispersions, emulsions, foams Interfaces: adsorption, reactions, films, forces Biological Interfaces: biocolloids, biomolecular and biomimetic materials Materials: nano- and mesostructured materials, polymers, gels, liquid crystals Electrochemistry: interfacial charge transfer, charge transport, electrocatalysis, electrokinetic phenomena, bioelectrochemistry Devices and Applications: sensors, fluidics, patterning, catalysis, photonic crystals However, when high-impact, original work is submitted that does not fit within the above categories, decisions to accept or decline such papers will be based on one criteria: What Would Irving Do? Langmuir ranks #2 in citations out of 136 journals in the category of Physical Chemistry with 113,157 total citations. The journal received an Impact Factor of 4.384*. This journal is also indexed in the categories of Materials Science (ranked #1) and Multidisciplinary Chemistry (ranked #5).