通过掺杂锌、水冷和磁内加热共沉淀法增强铁基纳米颗粒的磁成像性能

IF 2.7 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Letters Pub Date : 2025-06-11 DOI:10.1016/j.matlet.2025.138915

Yu Wang , Zhuang Deng , Tianqi Jia , Tao Jiang , Shuo Zhang , Jingyi Wu , Shuning Wei , Zhen Jiao

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引用次数: 0

摘要

本研究的目的是提高铁基磁性纳米颗粒的磁成像性能。通过掺杂Zn，采用改进的水冷磁内加热共沉淀法（HMIHC），有效地实现了成核阶段和长大阶段的分离。所得样品（ZION-313 kHz）不仅具有较窄的粒径分布（10.5±1.6 nm）和良好的水中分散性，而且具有最高的饱和磁化强度（60.3 emu/g样品）。体外弛豫时间测试和磁颗粒谱（MPS）测试表明，样品的r2值高达190.71 mM−1·s−1，MPS测试信号强度高达3.4 × 10−7。本研究为提高铁基造影剂在MRI和MPI临床医学成像中的性能提供了新的途径。

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Enhancing magnetic imaging performance of iron-based nanoparticles via Zn doping and hydrocooling and magnetically internal heating co-precipitation process

The purpose of this research is to improve the magnetic imaging properties of iron-based magnetic nanoparticles. The separation of nucleation and growth stages was realized effectively by doping Zn and adopting improved hydrocooling and magnetically internal heating co-precipitation (HMIHC) method. The obtained sample (ZION-313 kHz) not only exhibited a narrower particle size distribution (10.5 ± 1.6 nm) and excellent dispersion in water but also demonstrated the highest saturation magnetization intensity (60.3 emu/g sample). In vitro relaxation time testing and magnetic particle spectroscopy (MPS) testing indicated that the sample exhibited an r₂ value as high as 190.71 mM⁻¹·s⁻¹ and the MPS test signal intensity of up to 3.4 × 10⁻⁷. This study may offer a new way to enhance the performance of iron-based contrast agents in clinical medical imaging of MRI and MPI.

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来源期刊

Materials Letters 工程技术-材料科学：综合

CiteScore

5.60

自引率

3.30%

发文量

1948

审稿时长

50 days

期刊介绍： Materials Letters has an open access mirror journal Materials Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. Materials Letters is dedicated to publishing novel, cutting edge reports of broad interest to the materials community. The journal provides a forum for materials scientists and engineers, physicists, and chemists to rapidly communicate on the most important topics in the field of materials. Contributions include, but are not limited to, a variety of topics such as: • Materials - Metals and alloys, amorphous solids, ceramics, composites, polymers, semiconductors • Applications - Structural, opto-electronic, magnetic, medical, MEMS, sensors, smart • Characterization - Analytical, microscopy, scanning probes, nanoscopic, optical, electrical, magnetic, acoustic, spectroscopic, diffraction • Novel Materials - Micro and nanostructures (nanowires, nanotubes, nanoparticles), nanocomposites, thin films, superlattices, quantum dots. • Processing - Crystal growth, thin film processing, sol-gel processing, mechanical processing, assembly, nanocrystalline processing. • Properties - Mechanical, magnetic, optical, electrical, ferroelectric, thermal, interfacial, transport, thermodynamic • Synthesis - Quenching, solid state, solidification, solution synthesis, vapor deposition, high pressure, explosive