Hydrogen sensing using titania nanotubes

被引：716

作者：

Varghese, OK

Gong, DW

Paulose, M

Ong, KG

Grimes, CA ^{[1
]}

机构：

[1] Penn State Univ, Mat Res Lab 217, Dept Elect Engn, University Pk, PA 16802 USA

[2] Penn State Univ, Mat Res Lab 217, Inst Mat Res, University Pk, PA 16802 USA

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2003年 / 93卷 / 1-3期

关键词：

titania; nanotube; hydrogen; nanoporous; gas sensor;

D O I：

10.1016/S0925-4005(03)00222-3

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Titanium dioxide nanotubes, made by anodization, are highly sensitive to hydrogen; for example, cycling between nitrogen atmosphere and 1000 ppm hydrogen a variation in measured resistance of 103 is seen for 46 nm diameter nanotubes at 290 degreesC. The hydrogen sensors are completely reversible and have response times of approximately 150 s. Field emission scanning electron microscopy and Glancing angle Xray diffraction (GAXRD) are used to study the surface morphology and crystal structure of the nanotubes. (C) 2003 Elsevier Science B.V. All rights reserved.

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收藏

页码：338 / 344

页数：7

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