An excellent room-temperature hydrogen sensor based on titania nanotube-arrays

被引：52

作者：

Chen, Kansong ^{[1
]}

Xie, Kun ^{[1
]}

Feng, Xinran ^{[1
]}

Wang, Shengfu ^{[1
]}

Hu, Rui ^{[1
]}

Gu, Haoshuang ^{[1
]}

Li, Yang ^{[1
]}

机构：

[1] Hubei Univ, Key Lab Ferroelect & Piezoelect Mat & Devices Hub, Fac Phys & Elect Technol, Wuhan 430062, Peoples R China

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2012年 / 37卷 / 18期

基金：

美国国家科学基金会;

关键词：

Room temperature; Hydrogen sensor; TiO2 nanotube arrays; Sensing mechanism; SENSING PROPERTIES; THIN-FILMS; TIO2; FILM; NANOWIRE; NANORODS;

D O I：

10.1016/j.ijhydene.2012.06.067

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：

Hydrogen sensors have been fabricated from highly ordered TiO2 nanotube arrays through anodization of a Ti substrate in an ethylene glycol solution containing NH4F. The vertically oriented TiO2 nanotube arrays containing Pt electrodes exhibit an ability to detect a wide-range of hydrogen concentrations at room temperature. On exposure to 2000 ppm (parts per million) hydrogen, the sensors exhibit seven orders of magnitude change in resistance with a response time of 13 s at room temperature. The TiO2 nanotube arrays sensor equipped with Pt electrodes exhibited a diode-type current-voltage (I-V) characteristic in air, but nearly ohmic behavior in hydrogen balanced with argon. A significant response to hydrogen was observed without the presence of oxygen in the base atmosphere. The response of two kinds of sensors with either Pt or Pt/Ti electrodes to 500 ppm hydrogen was measured and the results suggested that the excellent hydrogen sensing properties in air resulted primarily from the variation of the Schottky barrier height at the Pt/TiO2 interface. Copyright (C) 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：13602 / 13609

页数：8

共 33 条

[1] Hydrogen sensing in titanate nanotubes associated with modulation in protonic conduction [J].

Alves, D. C. B. ;

Goncalves, A. M. B. ;

Campos, L. C. ;

Avila, E. S. ;

Lacerda, R. G. ;

Ferlauto, A. S. .

NANOTECHNOLOGY, 2011, 22 (23)

[2] Fabrication of WO3 nanodot-based microsensors highly sensitive to hydrogen [J].

Calavia, R. ;

Mozalev, A. ;

Vazquez, R. ;

Gracia, I. ;

Cane, C. ;

Ionescu, R. ;

Llobet, E. .

SENSORS AND ACTUATORS B-CHEMICAL, 2010, 149 (02) :352-361

[3] Pd doped WO3 films prepared by sol-gel process for hydrogen sensing [J].

Fardindoost, Somayeh ;

Zad, Azam Iraji ;

Rahimi, Fereshteh ;

Ghasempour, Roghayeh .

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2010, 35 (02) :854-860

[4] Room-temperature low-power hydrogen sensor based on a single tin dioxide nanobelt [J].

Fields, L. L. ;

Zheng, J. P. ;

Cheng, Y. ;

Xiong, P. .

APPLIED PHYSICS LETTERS, 2006, 88 (26)

[5] Synthesis of Pd or Pt/titanate nanotube and its application to catalytic type hydrogen gas sensor [J].

Han, Chi-Hwan ;

Hong, Dae-Woong ;

Kim, Il-Jin ;

Gwak, Jihye ;

Han, Sang-Do ;

Singh, Krishan C. .

SENSORS AND ACTUATORS B-CHEMICAL, 2007, 128 (01) :320-325

[6]

Hernandez-Ramirez, 2007, NANOTECHNOLOGY, V18

[7]

Huang YS, 2010, NANOTECHNOLOGY, V21

[8] Highly sensitive hydrogen detection of catalyst-free ZnO nanorod networks suspended by lithography-assisted growth [J].

Huh, Junghwan ;

Park, Jonghyurk ;

Kim, Gyu Tae ;

Park, Jeong Young .

NANOTECHNOLOGY, 2011, 22 (08)

[9] Hydrogen selective gas sensor in humid environment based on polymer coated nanostructured-doped tin oxide [J].

Kumar, Amit ;

Zhang, Peng ;

Vincent, Abhilash ;

McCormack, Rameech ;

Kalyanaraman, R. ;

Cho, Hyoung J. ;

Seal, Sudipta .

SENSORS AND ACTUATORS B-CHEMICAL, 2011, 155 (02) :884-892

[10] A hydrogen gas sensor employing vertically aligned TiO2 nanotube arrays prepared by template-assisted method [J].

Lee, Jiwon ;

Kim, Dai Hong ;

Hong, Seong-Hyeon ;

Jho, Jae Young .

SENSORS AND ACTUATORS B-CHEMICAL, 2011, 160 (01) :1494-1498

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