Tuning the Properties of Iron Oxide Nanoparticles in Thermal Decomposition Synthesis: A Comparative Study of the Influence of Temperature, Ligand Length and Ligand Concentration

IF 2.7 4区 材料科学 Q3 CHEMISTRY, PHYSICAL
Marion Görke, Sherif Okeil, Dirk Menzel, Bogdan Semenenko, Georg Garnweitner
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引用次数: 0

Abstract

Whilst the synthesis of magnetic nanoparticles via the non‐aqueous thermal decomposition method has proven to lead to the most defined products, the tailoring of their properties is still largely achieved empirically, in particular for metal oxide nanoparticles. In this paper, the influence of ligands with varying length and concentration on the properties of the resulting magnetic nanoparticles is studied, and it is shown that the reaction temperature rather than the ligand length or concentration crucially influences the properties in various ways. The obtained particles are characterized with regard to their size, morphology, crystallinity, and magnetic characteristics, using techniques like transmission electron microscopy (TEM), X‐ray diffraction (XRD), and superconducting quantum interference device (SQUID) magnetometry measurements. It is thereby shown that the optimum choice of ligand and synthesis conditions not only serves to ensure monodispersity of the resulting particles but also to realize high colloidal stability and redispersibility.
在热分解合成中调节氧化铁纳米粒子的性质:温度、配体长度和配体浓度影响的比较研究
虽然通过非水热分解法合成磁性纳米粒子已被证明能得到最明确的产物,但其特性的定制在很大程度上仍然是通过经验实现的,特别是对于金属氧化物纳米粒子。本文研究了不同长度和浓度的配体对所得磁性纳米粒子特性的影响,结果表明,反应温度而非配体长度或浓度以各种方式对特性产生了关键影响。利用透射电子显微镜 (TEM)、X 射线衍射 (XRD) 和超导量子干涉装置 (SQUID) 磁力测量等技术,对获得的颗粒的尺寸、形态、结晶度和磁性特征进行了表征。结果表明,配体和合成条件的最佳选择不仅能确保所得颗粒的单分散性,还能实现较高的胶体稳定性和再分散性。
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来源期刊
Particle & Particle Systems Characterization
Particle & Particle Systems Characterization 工程技术-材料科学:表征与测试
CiteScore
5.50
自引率
0.00%
发文量
114
审稿时长
3.0 months
期刊介绍: Particle & Particle Systems Characterization is an international, peer-reviewed, interdisciplinary journal focusing on all aspects of particle research. The journal joined the Advanced Materials family of journals in 2013. Particle has an impact factor of 4.194 (2018 Journal Impact Factor, Journal Citation Reports (Clarivate Analytics, 2019)). Topics covered include the synthesis, characterization, and application of particles in a variety of systems and devices. Particle covers nanotubes, fullerenes, micelles and alloy clusters, organic and inorganic materials, polymers, quantum dots, 2D materials, proteins, and other molecular biological systems. Particle Systems include those in biomedicine, catalysis, energy-storage materials, environmental science, micro/nano-electromechanical systems, micro/nano-fluidics, molecular electronics, photonics, sensing, and others. Characterization methods include microscopy, spectroscopy, electrochemical, diffraction, magnetic, and scattering techniques.
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