Characterization and acetone gas sensing properties of electrospun TiO2 nanorods

被引：58
作者：
Bian, Haiqin [1 ]
Ma, Shuyi [1 ]
Sun, Aimin [1 ]
Xu, Xiaoli [1 ]
Yang, Guijin [1 ]
Gao, Jiming [1 ]
Zhang, Zhengmei [1 ]
Zhu, Haibin [1 ]
机构：
[1] Northwest Normal Univ, Coll Phys & Elect Engn, Key Lab Atom & Mol Phys & Funct Mat Gansu Prov, Lanzhou 730070, Peoples R China
来源：
SUPERLATTICES AND MICROSTRUCTURES | 2015年 / 81卷
基金：
中国国家自然科学基金;
关键词：
TiO2; nanorods; Sensors; Electrospinning; Semiconductors; PHOTOCATALYTIC ACTIVITY; THIN-FILMS; SENSORS; NANOPARTICLES; PHOTOLUMINESCENCE; SENSITIVITY;
D O I：
10.1016/j.spmi.2015.01.022
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
In this work, random network structure of titanium dioxides (TiO2) nanorods was synthesized by calcining electrospun TiO2/PVP hybrid rods. Structural, optical and acetone gas sensing properties of the nanorods were investigated. The TiO2 nanorods are polycrystalline with a mixture of anatase and rutile structures. The diameter of TiO2 nanorods is about 500 nm. The photoluminescence (PL) spectra measurement at room temperature revealed that a broad emission band including the two emission peaks are about at 401 and 467 nm. The sensor shows the high response, good reproducibility and selectivity for acetone (CH3COCH) with a fast response and recovery time at 500 degrees C. In addition, the acetone sensing mechanism of the TiO2 nanorods sensors is discussed. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：107 / 113
页数：7
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