Gas-sensing properties of multi-walled carbon-nanotube sheet coated with NiO

被引：26
|
作者：
Jung, Daewoong [1 ]
Han, Maeum [1 ]
Lee, Gil S. [1 ]
机构：
[1] Univ Texas Dallas, Dept Elect Engn, Richardson, TX 75080 USA
来源：
CARBON | 2014年 / 78卷
关键词：
HYDROGEN SENSORS; FE CATALYSTS; OXIDE; ENHANCEMENT; SENSITIVITY; PERFORMANCE; GROWTH; ARRAYS; FILM;
D O I：
10.1016/j.carbon.2014.06.063
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：
A binary, nanostructured carbon-nanotube (CNT) sheet coated with nickel oxide (NiO) acting as gas sensor was fabricated for the utilization as hydrogen (H-2) sensor. Thermal annealing was conducted to improve the sensing ability of the sensor at room temperature. In order to investigate the effect of the surface area of the sensing material, NiO particles of various sizes were deposited onto CNT sheets by electrodeposition, which is a simple method for binary composites. We found a much higher sensitivity at room temperature after thermal annealing. Moreover, the size of the NiO particles significantly affects the sensitivity of the sensor. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：156 / 163
页数：8
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