Template-free hydrothermal synthesis of hollow hematite microspheres

被引：33

作者：

Dong, Qiang ^{[1
]}

Kumada, Nobuhiro ^{[1
]}

Yonesaki, Yoshinori ^{[1
]}

Takei, Takahiro ^{[1
]}

Kinomura, Nobukazu ^{[1
]}

Wang, Dan ^{[2
]}

机构：

[1] Univ Yamanashi, Dept Res, Interdisciplinary Grad Sch Med & Engn, Kofu, Yamanashi 4008511, Japan

[2] Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase & Complex Syst, Beijing 100080, Peoples R China

来源：

JOURNAL OF MATERIALS SCIENCE | 2010年 / 45卷 / 20期

关键词：

SOL-GEL SYNTHESIS; ALPHA-FE2O3; NANOPARTICLES; SPHERES; SHELL; OXIDE; PARTICLES; NANOSTRUCTURES; FABRICATION; MECHANISM; PROPERTY;

D O I：

10.1007/s10853-010-4634-x

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Hollow hematite (alpha-Fe2O3) microspheres with an average diameter of 3-4 mu m and a shell thickness of approximate 150 nm was synthesized by a simple hydrothermal route using FeCl3 center dot 6H(2)O solution and acetic acid without using any templates. The hollow microspheres were composed of alpha-Fe2O3 nanoparticles with the diameter range from 20 to 40 nm. The effects of reaction parameters such as reaction time, temperature, concentration of FeCl3 center dot 6H(2)O solution, and initial pH on the morphology of the final products were investigated. A possible formation mechanism of hollow alpha-Fe2O3 microspheres was also proposed, where the acetic acid played a role of etching in the formation of hollow structure.

引用

页码：5685 / 5691

页数：7

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