期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 201, 期 -, 页码 402-406出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2014.04.068
关键词
Gas sensor; SiC nanowires; Hydrogen; High temperature; Platinum nanoparticles
资金
- Qianjiang Talent Project of Zhejiang Province [2013R10063]
- 521 Talent Training Plan of Zhejiang Sci-Tech University
- Ministry of Human Resources and Social Security of Zhejiang Province
- Visiting Scholar Foundation from State Key Lab of Silicon Materials, Zhejiang University [SKL2013-3]
A single SiC nanowire gas sensor was fabricated, and its fast-response and ultrahigh sensitivity for hydrogen sensing at high temperature was demonstrated. The surface of SiC nanowire was decorated with Pt nanoparticles as a hydrogen catalyst. The decorated SiC nanowire was mounted on Ag electrodes in ohmic contact. Changes in the current were monitored at the low hydrogen concentration with a 1 V forward bias. An obvious change in current was observed when the nanowire sensor was exposed to the low hydrogen concentration atmosphere. High sensing performances such as fast response (3 s) and recovery (45 s), and high sensitivity (S approximate to 20%) toward H-2 were demonstrated at 600 degrees C. The hydrogen gas sensing characteristics in air as a background gas were investigated. The possible Pt catalytic hydrogen sensing mechanism of the SiC nanowire sensor was also discussed. (C) 2014 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据