An efficient approach for the synthesis of magnetic separable Fe3O4@TiO2 core-shell nanocomposites and its magnetic and photocatalytic performances

被引：5

作者：

Zhang, Jianchao ^{[1
]}

Li, Lingyun ^{[1
]}

Shi, Rongrong ^{[1
]}

Mei, Jiaming ^{[1
]}

Xiao, Zhang ^{[1
]}

Ma, Wei ^{[2
]}

机构：

[1] Lanzhou Univ, Sch Phys Sci & Technol, Inst Mat Sci & Engn, Key Lab Magnetism & Magnet Mat,Minist Educ,State, Lanzhou 730000, Gansu, Peoples R China

[2] Zhengzhou Univ, Res Ctr Heterogeneous Catalysis & Engn Sci, Sch Chem Engn & Energy, Zhengzhou 450001, Henan, Peoples R China

来源：

MATERIALS RESEARCH EXPRESS | 2019年 / 6卷 / 10期

基金：

中国国家自然科学基金;

关键词：

Fe3O4@TiO2; core-shell structure; mixed solvent method; magnetic properties; degradation; TIO2; COMPOSITE; NANOPARTICLES;

D O I：

10.1088/2053-1591/ab3531

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A convenient and efficient approach for the synthesis of Fe3O4@TiO2 nanocomposites with core-shell structure has been demonstrated. It takes four steps for synthesis process. Oleic acid-coated monodisperse Fe3O4 nanoparticles are obtained firstly, and surface modified Fe3O4 nanoparticles are followed to proceed. Then Fe3O4@TiO2 core-shell nanocomposites are subsequently synthesized using tetrabutyl titanate (TBOT) as titanium source and some polar aprotic solvents used as the mixed solvents. The obtained core-shell structure is composed of a central Fe3O4 nanoparticle core with sequential TiO2 surface, whereas the outer TiO2 coating was useful for the degradation of organic contaminants. Different core-shell nanocomposites in different polar solution are obtained. Shell thickness of Fe3O4@TiO2 nanocomposites could be adjusted rationally by changing synthetic conditions. The measurements of the magnetic properties demonstrate that the Fe3O4@TiO2 core-shell nanocomposites exhibit magnetic behavior at room temperature. The degradation of methylene blue solution was also explored.

引用

页数：10