Monodisperse α-Fe2O3 Mesoporous Microspheres: One-Step NaCl-Assisted Microwave-Solvothermal Preparation, Size Control and Photocatalytic Property

被引：38

作者：

Cao, Shao-Wen ^{[1
]}

Zhu, Ying-Jie ^{[1
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Beijing 100864, Peoples R China

来源：

NANOSCALE RESEARCH LETTERS | 2011年 / 6卷

基金：

中国国家自然科学基金;

关键词：

IRON-OXIDE; HOLLOW SPHERES; NIOBIUM OXIDE; MANGANESE OXIDE; THIN-FILMS; FE2O3; NANOPARTICLES; ASSEMBLIES; PRECURSORS; MECHANISM;

D O I：

10.1007/s11671-010-9742-7

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A simple one-step NaCl-assisted microwave-solvothermal method has been developed for the preparation of monodisperse alpha-Fe2O3 mesoporous microspheres. In this approach, Fe(NO3)(3)center dot 9H(2)O is used as the iron source, and polyvinylpyrrolidone (PVP) acts as a surfactant in the presence of NaCl in mixed solvents of H2O and ethanol. Under the present experimental conditions, monodisperse alpha-Fe2O3 mesoporous microspheres can form via oriented attachment of alpha-Fe2O3 nanocrystals. One of the advantages of this method is that the size of alpha-Fe2O3 mesoporous microspheres can be adjusted in the range from ca. 170 to ca. 260 nm by changing the experimental parameters. High photocatalytic activities in the degradation of salicylic acid are observed for alpha-Fe2O3 mesoporous microspheres with different specific surface areas.

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页码：1 / 7

页数：7

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