Fast and highly-sensitive hydrogen sensing of Nb2O5 nanowires at room temperature

被引：114
|
作者：
Wang, Zhao [1 ]
Hu, Yongming [1 ]
Wang, Wei [1 ]
Zhang, Xiong [1 ]
Wang, Baoxian [1 ]
Tian, Huyong [1 ]
Wang, Yu [2 ,3 ]
Guan, Jianguo [4 ]
Gu, Haoshuang [1 ]
机构：
[1] Hubei Univ, Fac Phys & Elect Technol, Wuhan 430062, Hubei, Peoples R China
[2] Hong Kong Polytech Univ, Dept Appl Phys, Hong Kong, Hong Kong, Peoples R China
[3] Hong Kong Polytech Univ, Mat Res Ctr, Hong Kong, Hong Kong, Peoples R China
[4] Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2012年 / 37卷 / 05期
基金：
美国国家科学基金会;
关键词：
Hydrogen sensor; Nanowires; Niobium pentaoxide; Room temperature; Sensing mechanism; SCHOTTKY-BARRIER; OXIDE; H-2; ADSORPTION; FILMS; CO; SURFACES; NANOTUBE; NIOBIUM; SENSORS;
D O I：
10.1016/j.ijhydene.2011.12.004
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：
The single-crystalline Nb2O5 nanowires with tetragonal phase structures were synthesized through thermal oxidation process. The Nb2O5 nanowires were grown along [001] orientation and formed a layer of free-standing nanowire membrane. A pair of platinum electrodes was deposited on the surface of the nanowire layer to fabricate a Pt/Nb2O5 nanowire hydrogen sensor. The Pt/Nb2O5 nanowire hydrogen sensor exhibited fast, highly-sensitive and selective hydrogen response at room temperature, which may be attributed to the hydrogen induced interface and surface effects together with the high specific surface area of the Nb2O5 nanowires. Copyright (C) 2011, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：4526 / 4532
页数：7
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