Gas-sensing properties of multi-walled carbon-nanotube sheet decorated with cobalt oxides

Author

Daewoong Jung ; Maeum Han ; Jinhong Kim ; Lee, Gil S.

Author_Institution

Electr. Eng. Dept., Univ. of Texas at Dallas, Richardson, TX, USA

fYear

2014

fDate

18-21 Aug. 2014

Firstpage

780

Lastpage

784

Abstract

A hybrid, nanocomposite carbon nanotube (CNT) sheet decorated with cobalt oxide (Co₃O₄) serving as gas sensor was fabricated for detecting hydrogen (H₂). In order to improve performance of the sensor, Co₃O₄ nanoparticles were decorated on the surface area of the CNT sheets by electrodeposition, which is an easy and simple method for fabricating hybrid composites. Moreover, the effect of surface area on sensitivity of CNT/Co₃O₄ composite was further investigated, and we found the mean sizes of the Co₃O₄ nanoparticles significantly affected the sensitivity of the composite.

Keywords

carbon nanotubes; cobalt compounds; electrodeposition; gas sensors; hydrogen; nanocomposites; nanofabrication; nanosensors; C-Co₃O₄; CNT sheet; H₂; electrodeposition; gas sensor; multiwalled carbon-nanotube sheet; nanocomposite carbon nanotube sheet; Carbon nanotubes; Gas detectors; Materials; Nanoparticles; Sensitivity; Temperature sensors; Carbon Nanotube sheet; Cobalt oxide; Gas sensor;

fLanguage

English

Publisher

ieee

Conference_Titel

Nanotechnology (IEEE-NANO), 2014 IEEE 14th International Conference on

Conference_Location

Toronto, ON

Type

conf

DOI

10.1109/NANO.2014.6968162

Filename

6968162