Preparation and visible-light photocatalytic activity of α-Fe2O3/γ-Fe2O3 magnetic heterophase photocatalyst

被引：45
作者：
Wei, Zhiwei [1 ]
Wei, Xiucheng [1 ]
Wang, Suiyan [1 ]
He, Deyan [1 ]
机构：
[1] Lanzhou Univ, Sch Phys Sci & Technol, Key Lab Magnetism & Magnet Mat, Minist Educ, Lanzhou 730000, Peoples R China
来源：
MATERIALS LETTERS | 2014年 / 118卷
基金：
中国国家自然科学基金;
关键词：
alpha-Fe2O3/gamma-Fe2O3; Heterophase junction; Nanocomposites; Magnetic materials; Photocatalysis; Visible light; FABRICATION; HETEROJUNCTION; PERFORMANCE; OXIDES; FILM;
D O I：
10.1016/j.matlet.2013.12.051
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Magnetic heterophase photocatalyst of alpha-Fe2O3/gamma-Fe2O3 nanorods was prepared by a facile thermal decomposition and redox method. The nanorods were about 100 nm in length and 20 nm in diameter, and well-structured heterophase junctions were formed between alpha-Fe2O3 and gamma-Fe2O3. Visible-light induced photodegradation of model dye rhodamine B was investigated by using the as-prepared alpha Fe2O3/gamma-Fe2O3 nanorods. The material exhibits a remarkably enhanced visible-light photocatalytic activity than the single-phase alpha-Fe2O3 or gamma-Fe2O3 owing to its well-structured interfaces and suitable band configuration. The existence of magnetic gamma-Fe2O3 facilitates the practical application of photocatalysts. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：107 / 110
页数：4
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