Fe2TiO5/α-Fe2O3 nanocomposite hollow spheres with enhanced gas-sensing properties

被引：47

作者：

Yu, R. ^{[2
]}

Li, Z. ^{[1
]}

Wang, D. ^{[1
]}

Lai, X. ^{[1
]}

Xing, C. ^{[1
]}

Yangb, M. ^{[1
]}

Xing, X. ^{[2
]}

机构：

[1] Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China

[2] Univ Sci & Technol Beijing, Dept Phys Chem, Beijing 100083, Peoples R China

来源：

SCRIPTA MATERIALIA | 2010年 / 63卷 / 02期

基金：

北京市自然科学基金; 中国国家自然科学基金;

关键词：

Nanocomposites; Nanocrystalline microstructure; Ferrites; Sensors; THIN-FILM; SENSORS; ALPHA-FE2O3; OXIDATION; OXIDES; VAPOR;

D O I：

10.1016/j.scriptamat.2010.03.043

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Hollow spheres of Fe2TiO5/alpha-Fe2O3 nanocomposite were prepared via a simple impregnating method using carbonaceous polysaccharide microspheres as hard templates. These hollow spheres possessed porous shells contributed by homogeneously arranged alpha-Fe2O3 a and Fe2TiO5 nanocrystals. With the higher specific-surface area provided by the porous spherical shells and lower grain boundary resistant between alpha-Fe2O3 and Fe2TiO5, these hollow spheres showed much improved gas-sensing properties for some organic gases. A sample with a Fe2TiO5/alpha-Fe2O3 ratio of about 1:1 showed the optimum gas-sensing value. (C) 2010 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：155 / 158

页数：4

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