Highly-sensitive, fast hydrogen sensing employing Pt-coated TiO2 nanotube arrays

被引：4
作者：
Chen, Kansong [1 ]
Xie, Kun
Feng, Xinran
Tian, Han
Hu, Rui
Li, Yang
Gu, Haoshuang
机构：
[1] Hubei Univ, Fac Comp Sci & Informat Engn, Key Lab Ferroelect & Piezoelect Mat & Devices Hub, Wuhan, Peoples R China
来源：
FUNCTIONAL MATERIALS LETTERS | 2014年 / 7卷 / 03期
基金：
美国国家科学基金会;
关键词：
TiO2 nanotube arrays; hydrogen sensor; room temperature; selectivity; THIN-FILMS;
D O I：
10.1142/S1793604714500210
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Highly ordered TiO2 nanotube arrays were fabricated by anodization in an ethylene glycol solution containing NH4F. A pair of platinum electrodes was deposited on the surface of the nanotube layer to fabricate a Pt/TiO2 nanotube arrays hydrogen sensor. The subject sensors exhibited a seven order of magnitude change in resistance with a response time of 13 s at room temperature upon exposure to 2000 ppm (parts per million) hydrogen. We investigated the hydrogen response of the Pt/TiO2 sensors as a function of the length of the nanotubes and compared their activity with that of a reference film.
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页数：4
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