Size-controlled synthesis of Fe3O4 and Fe3O4@SiO2 nanoparticles and their superparamagnetic properties tailoring

被引：30

作者：

Sajid, Muhammad ^{[1
]}

Shuja, Sidra ^{[1
]}

Rong, Hongpan ^{[1
]}

Zhang, Jiatao ^{[2
]}

机构：

[1] Beijing Inst Technol, Sch Mat Sci & Engn, Beijing Key Lab Construct Tailorable Adv Funct Mat, Beijing 100081, Peoples R China

[2] Beijing Inst Technol, Inst Engn Med, Beijing Key Lab Construction Tailorable Adv Funct, Key Lab Med Mol Sci & Pharmaceut Engn,Sch Chem & C, Beijing 100081, Peoples R China

来源：

PROGRESS IN NATURAL SCIENCE-MATERIALS INTERNATIONAL | 2023年 / 33卷 / 01期

关键词：

Fe3O4; nanoparticles; Fe3O4 @SiO(2)hydrophilization; Superparamagnetic; Core; -shell; Aqueous inverse microemulsion; IRON-OXIDE NANOPARTICLES; CORE-SHELL NANOPARTICLES; MAGNETIC NANOPARTICLES; SINGLE; NANOCRYSTALS; CATALYST; AU;

D O I：

10.1016/j.pnsc.2022.08.003

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Superparamagnetic properties and fine-tuning of colloidal Fe3O4 nanoparticles are important for their widespread biomedical applications. Herein, colloidal Fe3O4 nanoparticles (NPs) of different sizes (8 -20 nm) were prepared, and their hydrophilization with SiO2 shell coating to be Fe3O4@SiO2 core-shell had been realized successively. The size of Fe3O4 NPs was controlled by different heating rates. Transmission electron microscope (TEM), powder X-ray diffractometry (XRD), and vibrating sample magnetometer (VSM) were performed to examine the morphology, crystallinity, and magnetic properties of the prepared Fe3O4 and Fe3O4@SiO2 core-shell NPs, respectively. In addition, high resolution transmission electron microscope (HRTEM) results suggested that Fe3O4 NPs had well crystallization. Enabled by such, their superparamagnetic properties can be fine-tuned accordingly and cater to their potential applications.

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页码：116 / 119

页数：4

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