The effect of highly ordered titania nanotube structures on hydrogen gas detection

被引：11

作者：

Asl, Shahin Khameneh ^{[1
]}

Alavi, Babak ^{[1
]}

Ahmadi, Sohrab ^{[2
]}

机构：

[1] Univ Tabriz, Fac Mech Engn, Dept Mat Engn, Tabriz 5166614766, Iran

[2] Univ Tabriz, Res Inst Appl Phys & Astron, Tabriz 5166614766, Iran

来源：

SURFACE AND INTERFACE ANALYSIS | 2012年 / 44卷 / 08期

关键词：

hydrogen gas sensor; titanium oxide; nanotube; anodizing; CARBON-MONOXIDE; TEMPERATURE; SURFACES;

D O I：

10.1002/sia.4890

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Different titanium oxide nanotubes were synthesized by anodizing the surface of titanium foil in two electrolyte solutions containing hydrofluoric acid and ethylene glycol. The samples were heat-treated in a furnace. The microstructure and phase transformations of the nanotubes were investigated by X-ray diffraction and field emissionscanning electron microscope. The nanoscale geometry of the nanotubes is responsible for the outstanding hydrogen gas sensitivities. A remarkable variation in electrical conductance has been observed in titanium oxide nanotube arrays that were prepared in hydrofluoric acid. This sensor exhibits a large resistance variation in the presence of very small quantities of hydrogen gas at 25 degrees C. The sensors show reversibility, repeatability, negligible drift, and wide dynamic range. Copyright (c) 2012 John Wiley & Sons, Ltd.

引用

页码：1051 / 1053

页数：3

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