A room temperature oxygen gas sensor based on hierarchical TiO2

被引：0

作者：

Wang, Hairong ^{[1
]}

Yao, Yuqing ^{[1
]}

Wu, Guishan ^{[1
]}

Sun, Qiao ^{[1
]}

Wang, Mengya ^{[1
]}

Chen, Xiaowei ^{[1
]}

Wang, Jiuhong ^{[1
]}

机构：

[1] Xi An Jiao Tong Univ, Sch Mech Engn, State Key Lab Mfg Syst Engn, Xian 710049, Shaanxi, Peoples R China

来源：

2016 6TH IEEE INTERNATIONAL CONFERENCE ON MANIPULATION, MANUFACTURING AND MEASUREMENT ON THE NANOSCALE (IEEE 3M-NANO) | 2016年

基金：

中国国家自然科学基金;

关键词：

hierarchical TiO2; hydrothermal; room temperature; oxygen sensor; METAL; NANOPARTICLES;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Three-dimensional TiO2 with nanoscale structures, such as porous films, porous spheres, and hierarchical structures, play a promising role in the fields of gas sensors. In this work, hierarchical TiO2 shaped like dandelion are synthesized by hydrothermal process. The dandelion-like nanostructured TiO2 is analyzed by X-ray diffraction (XRD) and field emission scanning electron microscopy (FESEM). Then the study focus on the gas sensing properties for oxygen at room temperature. It is found that the hierarchical TiO2 have a reversible sensing capacity to 1% O-2 at room temperature with response time and recovery time less than 50 seconds and 60 seconds, respectively. At room temperature of 25 +/- 1 degrees C, resistance changes of the sensor were dependent on O-2 gas concentrations. It is suggested that the hierarchical TiO2 could be a promising sensing material for O-2 detection at room temperature.

引用

页码：199 / 202

页数：4

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