Fabrication of shape-controlled α-Fe2O3 nanostructures by sonoelectrochemical anodization for visible light photocatalytic application

被引：105

作者：

Zhang, Zhonghai ^{[1
]}

Hossain, Md Faruk ^{[2
]}

Takahashi, Takakazu ^{[1
]}

机构：

[1] Toyama Univ, Grad Sch Sci & Engn Res, Toyama 9308555, Japan

[2] Toyama Univ, Grad Sch Sci & Engn Educ, Toyama 9308555, Japan

来源：

MATERIALS LETTERS | 2010年 / 64卷 / 03期

基金：

日本学术振兴会;

关键词：

alpha-Fe2O3; Nanostructures; Sonoelectrochemical anodization; Photocatalytic activity; Visible light; IRON-OXIDE; WATER PHOTOOXIDATION; ARRAYS; FILMS;

D O I：

10.1016/j.matlet.2009.10.071

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this study, various alpha-Fe2O3 (hematite) nanostructures were prepared on Fe foils by sonoelectrochemical anodization method. The principal component of the electrolyte was ethylene glycol contained 0.3 wt.% NH4F. The alpha-Fe2O3 surface shapes have been controlled by varying the water volume ratios (WVR) in electrolyte solution. The alpha-Fe2O3 samples were characterized by field emission scanning electron microscopy, energy-dispersive x-ray spectroscopy, grazing incidence x-ray diffraction, and UV-vis absorbance spectra. As the variation of WVR. the alpha-Fe2O3 samples showed different surface morphologies of nanoparticles, nanorods, nanoporous, and nanoleaflets. The visible light photocatalytic activity of the alpha-Fe2O3 nanostructures was investigated by degradation of methylene blue, and the alpha-Fe2O3 nanoporous sample showed the best photocatalytic performance. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：435 / 438

页数：4

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