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http://dx.doi.org/10.5369/JSST.2012.21.6.456

Effect of Working Temperature on Sensitivity of Au/SnO2 Core-Shell Structure Nanoparticles for CO Gas  

Yu, Yeon-Tae (Division of Advanced Materials Engineering, Chonbuk National University)
Publication Information
Journal of Sensor Science and Technology / v.21, no.6, 2012 , pp. 456-460 More about this Journal
Abstract
Au/$SnO_2$ core-shell structure nanoparticles (NPs) were synthesized by microwave hydrothermal method, and the effect of working temperature on sensitivity of Au/$SnO_2$ core-shell NPs for CO gas was investigated. The $SnO_2$ shell layer was consisted of $SnO_2$ primary particles with 4.5 nm diameter. The response of Au/$SnO_2$ core-shell NPs for CO gas was maximized at the working temperature of $350^{\circ}C$ while the sensitivity increased with decreasing the working temperature due to the low grain size effect of $SnO_2$ NPs on the response of CO gas.
Keywords
Au/$SnO_2$ core-shell nanoparticle; CO gas; Sensing response; Working temperature;
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