Nano Archive

The enhanced ethanol sensing properties of multi-walled carbon nanotubes/SnO2 core/shell nanostructures

Chen, Y. J. and Zhu, C. L. and Wang, T. H. (2006) The enhanced ethanol sensing properties of multi-walled carbon nanotubes/SnO2 core/shell nanostructures. NANOTECHNOLOGY, 17 (12). pp. 3012-3017.

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Official URL: http://www.iop.org/EJ/abstract/0957-4484/17/12/033

Abstract

Multi-walled carbon nanotubes/SnO2 (CNT/SnO2) core/shell nanostructures were synthesized by a simple wet-chemical method. The thickness of the SnO2 shell was about 10 nm and the diameters of the SnO2 particles were 2 - 8 nm. Sensors based on the core/shell heterostructures exhibited enhanced ethanol sensing properties. The sensitivity to 50 ppm ethanol was up to 24.5, and the response time and recovery time were about 1 and 10 s, respectively. In addition, the fluctuation of the sensitivity was less than +/- 3% on remeasurement after 3 months. These results indicate that the core/shell nanostructures are potentially new sensing materials for fabricating gas sensors.

Item Type:Article
Subjects:Material Science > Nanofabrication processes and tools
Analytical Science > Nanotechnology for sensing and actuating
ID Code:3817
Deposited By:SPI
Deposited On:22 Jan 2009 10:06
Last Modified:19 Feb 2009 09:57

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