Template-free synthesis of monodisperse α-Fe2O3 porous ellipsoids and their application to gas sensors

被引：34

作者：

Sun, Peng ^{[1
]}

He, Xinxin ^{[1
]}

Wang, Wenbo ^{[1
]}

Ma, Jian ^{[1
]}

Sun, Yanfeng ^{[1
]}

Lu, Geyu ^{[1
]}

机构：

[1] Jilin Univ, State Key Lab Integrated Optoelect, Coll Elect Sci & Engn, Changchun 130012, Peoples R China

来源：

CRYSTENGCOMM | 2012年 / 14卷 / 06期

关键词：

LITHIUM-ION BATTERY; SENSING PROPERTIES; HOLLOW SPHERES; TIO2; NANOSPHERES; INTERIOR SPACE; FABRICATION; GROWTH; SIZE; NANOPARTICLES; NANOCRYSTALS;

D O I：

10.1039/c2ce06400f

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Monodisperse porous alpha-Fe2O3 ellipsoids composed of primary nanocrystals were synthesized by a facile one-step template-free hydrothermal method. Field emission scanning electron microscopic and transmission electron microscopic results revealed that these porous ellipsoids were built from a large number of nanoparticles with sizes of about 10-20 nm. The morphology and size of the as-prepared products could be tailored by simply adjusting the amounts of hexamethylenetetramine and reaction temperature. A possible formation mechanism was proposed on the basis of the results of time-dependent experiments. When used as sensing materials in chemical sensors, the as-prepared porous alpha-Fe2O3 ellipsoids exhibit a high response to ethanol.

引用

页码：2229 / 2234

页数：6

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