Synthesis and characterization of Fe3O4/TiO2 magnetic and photocatalyst bifunctional core-shell with superparamagnetic performance

被引：23

作者：

Behrad, F. ^{[1
,2
]}

Farimani, M. Helmi Rashid ^{[1
,2
]}

Shahtahmasebi, N. ^{[1
,2
]}

Roknabadi, M. Rezaee ^{[1
,2
]}

Karimipour, M. ^{[3
]}

机构：

[1] Ferdowsi Univ Mashhad, Dept Phys, Fac Sci, Mashhad, Iran

[2] Ferdowsi Univ Mashhad, Nanosci Ctr, Fac Sci, Mashhad, Iran

[3] Vali E Asr Univ Rafsanjan, Fac Sci, Dept Phys, Rafsanjan, Iran

来源：

EUROPEAN PHYSICAL JOURNAL PLUS | 2015年 / 130卷 / 07期

关键词：

NANOPARTICLES; FABRICATION;

D O I：

10.1140/epjp/i2015-15144-y

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In this research a simple method has been presented to coat magnetic nanoparticles with TiO2. Firstly, Fe3O4 nanoparticles have been prepared using a co-precipitation method. Thereafter, in order to achieve particles with better dispersibility, the surface of Fe3O4 nanoparticles has been modified with the help of trisodium citrate as stabilizer. Afterward, Fe3O4 / TiO2 core-shell nanocomposites were synthesized by the Stober method. The prepared samples were characterized by means of X-ray diffraction (XRD), transmission electron microscopy (TEM), Fourier transform infrared (FTIR) spectroscopy, energy dispersive X-ray spectroscopy (EDS) analysis and vibrating sample magnetometer (VSM). XRD results show the formation of two compounds of crystalline magnetite and brookite-type TiO2 . TEM images confirmed the formation of their core-shell structure. The surface modification of magnetite nanoparticles using trisodium citrate was confirmed by FTIR analysis. Magnetic studies also indicated that prepared core-shells exhibit superparamagnetic behavior at room temperature. Combining this property with the photocatalytic ability of TiO2 could result in a synthesized nanocomposite with different medical and environmental applications.

引用

页数：9

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