A novel Fe2O3-Fe3O4@SiO2@TiO2-TNS-GR magnetic composite with an enhanced visible photocatalytic property

作者：Yang, Weiqiang; Liu, Xiaowen^*

来源：Functional Materials Letters, 2019, 12(2): 1950006.

DOI：10.1142/S1793604719500061

• Fe2O3-Fe3O4@SiO2@TiO2-TNS-GR
• magnetic core-shell
• photocatalytic property
• rhodamine B
• visible light

A novel magnetic Fe2O3-Fe3O4@SiO2@TiO2-TNS-GR had been synthesized via a solvothermal method. The XRD diffraction patterns and SEM images showed that the magnetite Fe2O3-Fe3O4 core was coated with amorphous SiO2 sheel and anatase sheel successively. TiO2 nanosheets (TNS) and Fe2O3-Fe3O4@SiO2@TiO2 had been loaded on the graphene (GR) sheets successfully. The degradation rate of Fe2O3-Fe3O4@SiO2@TiO2-TNS-GR for rhodamine B (RhB) under visible light irradiation reached 93.34%, which was much higher than that of Fe3O4@SiO2-TNS-GR. The Fe3O4 made the composite to be easily separated from the suspension with an external magnetic field, and alpha-Fe2O3 had enhanced the photocatalytic activity of the composite.

• 出版日期2019-4