Magnetically Separable Fe3O4/TiO2 Hollow Spheres: Fabrication and Photocatalytic Activity

被引：290

作者：

Xuan, Shouhu ^{[1
,3
]}

Jiang, Wanquan ^{[3
]}

Gong, Xinglong ^{[2
]}

Hu, Yuan ^{[1
]}

Chen, Zuyao ^{[3
]}

机构：

[1] Univ Sci & Technol China, State Key Lab Fire Sci, Hefei 230026, Anhui, Peoples R China

[2] Univ Sci & Technol China, Dept Mech & Mech Engn, CAS Key Lab Mech Behav & Design Mat, Hefei 230026, Anhui, Peoples R China

[3] Univ Sci & Technol China, Dept Chem, Hefei 230026, Anhui, Peoples R China

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2009年 / 113卷 / 02期

关键词：

MESOSTRUCTURED TITANIA; COMPOSITE; CATALYST; FILMS;

D O I：

10.1021/jp8073859

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Well-defined magnetic separable, hollow spherical Fe3O4/TiO2 hybrid photocatalysts were successfully prepared through a poly(styrene-acrylic acid) (PSA) template method. This bifunctional product was characterized in terms of the particle size, surface morphology, chemical composition, and magnetic properties using transmission electron microscopy (TEM), field emission scanning electron microscopy (FE-SEM), and X-ray powder diffraction (XRD) patterns. The M-H hysteresis loop for Fe3O4/TiO2 hollow spheres indicates that the composite spheres show superparamagnetic characteristics at room temperature. These magnetic TiO2 composites with hollow nature exhibit good photocatalytic activity under UV light irradiation and can be recycled six times by magnetic separation without major loss of activity. This method can be further applied to synthesize other bifunctional hollow spheres, such as Fe3O4/SnO2 and Fe3O4/CdS.

引用

页码：553 / 558

页数：6

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