Anodic Fabrication of Highly Ordered TiO2 Nanotube Arrays and Its Hydrogen Sensing

被引：7

作者：

Ge, Yuhua ^{[1
]}

Liu, Xiaorui ^{[1
]}

Zhu, Wenjing ^{[1
]}

Liu, Songqin ^{[1
]}

机构：

[1] Southeast Univ, Sch Chem & Chem Engn, Nanjing 210096, Jiangsu, Peoples R China

来源：

IEEE SENSORS JOURNAL | 2012年 / 12卷 / 10期

关键词：

Anodization; ethylene glycol; glycerol; hydrogen sensing; TiO2 nanotube arrays; ELECTROCHEMICAL FORMATION; OXIDE-FILMS; THIN-FILMS; TITANIUM; GROWTH; REDUCTION;

D O I：

10.1109/JSEN.2012.2204802

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this paper, highly ordered TiO2 nanotube arrays are fabricated via electrochemical anodization of high purity Ti foil in fluorine containing electrolytes. The field emission scanning electron microscopy measurements show that the morphology of TiO2 nanotube arrays is affected by the two-step anodization process and the polar solvent containing electrolytes. With two-step anodization, the surface morphology of TiO2 nanotube arrays is orderly and uniform. Moreover, the pore diameter is stupendously homogeneous. The structural parameters of TiO2 nanotube arrays were improved by the addition of polar solvent, water, to electrolytes. After annealing treatment and Pd nanoparticle doping, the hydrogen sensing characteristics of TiO2 nanotube arrays were analyzed by measuring its electric resistance response in different H-2 concentrations. The results demonstrate that TiO2 nanotube arrays have high hydrogen sensitivity at room temperature.

引用

页码：3082 / 3089

页数：8

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