Single-crystalline α-Fe2O3with hierarchical structures: Controllable synthesis, formation mechanism and photocatalytic properties

被引：84

作者：

Gu, Jianmin ^{[1
]}

Li, Siheng ^{[1
]}

Wang, Enbo ^{[1
]}

Li, Qiuyu ^{[1
]}

Sun, Guoying ^{[1
]}

Xu, Rui ^{[1
]}

Zhang, Hong ^{[1
]}

机构：

[1] NE Normal Univ, Dept Chem, Key Lab Polyoxometalate Sci, Minist Educ, Changchun 130024, Jilin, Peoples R China

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 2009年 / 182卷 / 05期

基金：

中国国家自然科学基金;

关键词：

Hematite; Hierarchical structures; Photocatalytic properties; TEMPLATE-FREE SYNTHESIS; LARGE-SCALE SYNTHESIS; LITHIUM ION BATTERY; ALPHA-FE2O3; NANORODS; GROWTH-MECHANISM; FACILE ROUTE; NANOSTRUCTURES; NANOTUBES; NANOBELTS; WATER;

D O I：

10.1016/j.jssc.2009.01.041

中图分类号：

O61 [无机化学];

学科分类号：

070301 [无机化学];

摘要：

A dual iron precursors system in a hydrothermal process was developed for controllable fabrication of alpha-Fe2O3 hierarchical structures with different morphologies. Micro-pines, snowflakes and bundles were successfully synthesized simply by tuning the total concentration of the two iron precursors K-4[Fe(CN)(6)] and K-3[Fe(CN)(6)] and their molar ratio. The obtained of alpha-Fe2O3 hierarchical structures were characterized using field-emission scanning electron microscopy, transmission electron microscopy, X-ray powder diffraction, X-ray photoelectron spectroscopy and energy-dispersive X-ray analysis. The effect of experimental conditions on the morphologies of the alpha-Fe2O3 crystals was systematically investigated. A possible formation mechanism of different alpha-Fe2O3 hierarchical structures was proposed. Good photocatalytic properties were observed for all the hierarchical structures. (c) 2009 Published by Elsevier Inc.

引用

页码：1265 / 1272

页数：8

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