Browse > Article
http://dx.doi.org/10.3740/MRSK.2014.24.8.413

Characteristics of Thick Film Gas Sensors Using Nano ZnO:CNT  

Yoon, So-Jin (Department of Physics, Dong-Eui University)
Yu, Il (Department of Physics, Dong-Eui University)
Publication Information
Korean Journal of Materials Research / v.24, no.8, 2014 , pp. 413-416 More about this Journal
Abstract
The effects of an addition of CNT on the sensing properties of nano ZnO:CNT-based gas sensors were studied for $H_2S$ gas. The nano ZnO sensing materials were grown by a hydrothermal reaction method. The nano ZnO:CNT was prepared by ball-milling method. The weight range of the CNT addition on the ZnO surface was from 0 to 10%. The nano ZnO:CNT gas sensors were fabricated by a screen-printing method on alumina substrates. The structural and morphological properties of the ZnO:CNT sensing materials were investigated by XRD, EDS, and SEM. The XRD patterns revealed that nano ZnO:CNT powders with a wurtzite structure were grown with (1 0 0), (0 0 2), and (1 0 1) dominant peaks. The size of the ZnO was about 210 nm, as confirmed by SEM images. The sensitivity of the nano ZnO:CNT-based sensors was measured for 5 ppm of $H_2S$ gas at room temperature by comparing the resistance in air with that in target gases.
Keywords
ZnO; CNT; $H_2S$; ball-mill;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 J. H. Jong and I, Yu, J. Mater. Res., 21(4), 232 (2011) (in Korean).
2 S. J. Kim and J. H. Lee, Kor. J. Mater. Res., 18(11), 628 (2008) (in Korean).   DOI   ScienceOn
3 H. S. Moon, S. H. Park, S. E. Kim and Y. S. Yu, J. Kor. Sens. Soc., 19, 462 (2010) (in Korean).
4 C. Y. Jo, K. C. Park and J. G. Kim, J. Kor. Sens. Soc., 18(1) 54 (2009) (in Korean).
5 I, Yu and J. Y, Lee, J. Mater. Res., 20(8), 408 (2010) (in Korean).
6 J. H. Jong, Y. S. Yu and I, Yu, J. Mater. Res., 21(9), 486 (2011) (in Korean).
7 J. Y. Lee, Y. S. Yu and I, Yu, J. Mater. Res., 21(10), 546 (2011) (in Korean).
8 S. J, Yoon and I, Yu, J. Mater. Res., 23(4), 211 (2013) (in Korean).
9 D. J. Shin, Y. S. Yu, S. H. Park and I, Yu, J. Mater. Res., 21(6), 299(2011) (in Korean).