Solid-state chemical synthesis of mesoporous α-Fe2O3 nanostructures with enhanced xylene-sensing properties

被引：66

作者：

Li, Yizhao ^{[1
]}

Cao, Yali ^{[1
]}

Jia, Dianzeng ^{[1
]}

Wang, Yang ^{[1
]}

Xie, Jing ^{[1
]}

机构：

[1] Xinjiang Univ, Inst Appl Chem, Key Lab Adv Funct Mat, Key Lab Mat & Technol Clean Energy,Minist Educ, Urumqi 830046, Xinjiang, Peoples R China

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2014年 / 198卷

基金：

中国国家自然科学基金;

关键词：

alpha-Fe2O3; Mesoporous nanostructures; Solid-state chemical synthesis; Sensors; Xylene; LITHIUM-ION BATTERY; FACILE SYNTHESIS; GAS SENSORS; NANORODS; NANOPARTICLES; NANOWIRES;

D O I：

10.1016/j.snb.2014.03.056

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Uniform mesoporous alpha-Fe2O3 nanostructures have been handily prepared by a solid-state chemical reaction with the features of simple process, mild condition, and high yield. The as-prepared samples with 3-dimensional (3D) honeycomb structures consist of a number of small nanosheets. These mesoporous alpha-Fe2O3 nanostructures have been investigated for application as a sensor to detect various vapors. The experiment results have shown that the mesoporous alpha-Fe2O3 nanostructures exhibited improved performances for xylene-sensing in comparison with the alpha-Fe2O3 nanosheets. The response of mesoporous nanostructures to 1000 ppm xylene was up to 6 times higher than that of nanosheets. The mesoporous alpha-Fe2O3 nanostructures-based sensor had also wide detection range of 1-1000 ppm, good selectivity, and short response time to xylene. The enhancement of properties may be attributed to the large specific surface area and porous nanostructure. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：360 / 365

页数：6

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