Synthesis and visible-light-driven photocatalytic activity of one-dimensional CdS/α-Fe2O3

被引：17
|
作者：
Wu, Jianfang [1 ]
Li, Zhen [1 ]
Li, Fei [1 ]
机构：
[1] China Univ Geosci, Fac Mat & Chem, Wuhan 430074, Peoples R China
来源：
SUPERLATTICES AND MICROSTRUCTURES | 2013年 / 54卷
关键词：
1D CdS/alpha-Fe2O3; Photocatalytic activity; Visible-light; ROOM-TEMPERATURE; METHYLENE-BLUE; CDS; NANOWIRE; NANOTUBE; GROWTH; GAS; ZNS;
D O I：
10.1016/j.spmi.2012.11.008
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
One-dimensional (1D) CdS nanowire/alpha-Fe2O3 nanoparticles nanostructure has been successfully synthesized via a typical two-step solvothermal deposition method. The as-prepared samples were characterized by X-ray diffraction (XRD), Field emission scanning electron microscopy (FESEM), Transmission electron microscopy (TEM), UV-vis spectroscopy and Photoluminescence spectroscopy. The results revealed that the 1D CdS/alpha-Fe2O3 was consisted of CdS and alpha-Fe2O3. Each CdS nanowire has a uniform diameter of 20-30 nm and a length ranging from several to several tens of micrometers. alpha-Fe2O3 nanoparticles are anchored on CdS nanowires without any surface pretreatment and the particle size of alpha-Fe2O3 nanoparticles ranges from several to several tens of nanometers. The photocatalytic activity of 10 CdS/alpha-Fe2O3 and pristine CdS nanowires was evaluated by the photodegradation of Methylene Blue (MB) aqueous solution. The 1D CdS/alpha-Fe2O3 exhibited enhanced photocatalytic activity, which is attributed to the extended photo-absorption range and improved separation of photogenerated carriers in CdS/alpha-Fe2O3. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：146 / 154
页数：9
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