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http://dx.doi.org/10.3740/MRSK.2008.18.12.655

NO Gas Sensing Properties of ZnO-Carbon Nanotube Composites  

Park, Seong-Yong (School of Nano Science and Technology, Chungnam National University)
Jung, Hoon-Chul (School of Nano Science and Technology, Chungnam National University)
Ahn, Eun-Seong (School of Nano Science and Technology, Chungnam National University)
Nguyen, Le Hung (School of Nano Science and Technology, Chungnam National University)
Kang, Youn-Jin (School of Nano Science and Technology, Chungnam National University)
Kim, Hyo-Jin (School of Nano Science and Technology, Chungnam National University)
Kim, Do-Jin (School of Nano Science and Technology, Chungnam National University)
Publication Information
Korean Journal of Materials Research / v.18, no.12, 2008 , pp. 655-659 More about this Journal
Abstract
The NO gas sensing properties of ZnO-carbon nanotube (ZnO-CNT) composites fabricated by the coaxial coating of single-walled CNTs with ZnO were investigated using pulsed laser deposition. Upon examination, the morphology and crystallinity of the ZnO-CNT composites showed that CNTs were uniformly coated with polycrystalline ZnO with a grain size as small as 5-10 nm. Gas sensing measurements clearly indicated a remarkable enhancement of the sensitivity of ZnO-CNT composites for NO gas compared to that of ZnO films while maintaining the strong sensing stability of the composites, properties that CNT-based sensing materials do not have. The enhanced gas sensing properties of the ZnO-CNT composites are attributed to an increase in the surface adsorption area of the ZnO layer via the coating by CNTs of a high surface-to-volume ratio structure. These results suggest that the ZnO-CNT composite is a promising template for novel solid-state semiconducting gas sensors.
Keywords
ZnO gas sensor; carbon nanotube; ZnO-CNT composite;
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1 G. Eranna, B. C. Joshi, D. P. Runthala and R. P. Gupta, Crit. Rev. Sol. Sta. Mater. Sci., 29, 111 (2004)   DOI   ScienceOn
2 J. Xu, Q. Pan, Y. Shun and Z. Tian, Sensors and Actuators B, 66, 277 (2000)   DOI   ScienceOn
3 Z. Fan and J. G. Lu, J. Nanosci. Nanotech., 5, 1561 (2005)   DOI   ScienceOn
4 A. O. Dikovska, Sensors and Actuators A, 140, 19 (2007)   DOI   ScienceOn
5 N. Koshizaki and T. Oyama, Sensors and Actuators B, 66, 119 (2000)   DOI   ScienceOn
6 Y. Kang, D. Oh, H. Song, J. Jung, H. Jung, Y. Cho and D. Kim, Kor. J. Mater. Res., 18, 253 (2008)   DOI   ScienceOn
7 J. Kong, N. R. Franklin, C. Zhou, M. C. Chapline, S. Peng, J. Cho and H. Dai, Science, 287, 622 (2000)   DOI   ScienceOn
8 P. G. Collins, K. Bradley, M. Ishigami and A. Zettl, Science, 287, 1801 (2000)   DOI   ScienceOn
9 A. Wisitsoraat, A. Tuantranont, C. Thanachyanont and P. Singjai, in Proceedings of the 1st IEEE International Conference on Nano/Micro Engineered and Molecular Systems (Zhuhai, China, January 2006), p.1487
10 K. H. An, S. Y. Jeong, H. R. Hwang and Y. H. Lee, Adv. Mater., 16, 1005 (2004)   DOI   ScienceOn
11 R. Kelly and A. Miotello, Pulsed Laser Deposition of Thin Films, p.55, ed. D. B Chrisley and G. K. Hubler, John Wiley & Sons, New York, (1994)
12 N. J. Ianno, L. McConville, N. Shaikh, S. Pittal and P. G. Snyder, Thin Solid Films, 220, 92 (1992)   DOI   ScienceOn
13 J. L. Solis and V. Lantto, Sensors and Actuators B, 48, 322 (1998)   DOI   ScienceOn
14 T. Ikuno, T. Yasuda, S. Honda, K. Oura, M. Katayama, J.- G. Lee and H. Mori, J. Appl. Phys., 98, 114305 (2005)   DOI   ScienceOn
15 N. Barsan, D. Koziej and U. Weimar, Sensors and Actuators B, 121, 18 (2007)   DOI   ScienceOn
16 T. Gao and T. H. Wang, Appl. Phys. A, 80, 1451 (2005)   DOI
17 S. Ito, Y. Suwa, S. Kondo, S. Kameoka, K. Tomishige and K. Kunimori, Catal. Commun., 4, 499 (2003)   DOI   ScienceOn