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• Lee, J
• Lee, W
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Sensors 2011, 11(1), 825-851; doi:10.3390/s110100825

Review

Low-Dimensional Palladium Nanostructures for Fast and Reliable Hydrogen Gas Detection

Jin-Seo Noh, Jun Min Lee and Wooyoung Lee*

Department of Materials Science and Engineering, Yonsei University, Seoul 120-749, Korea

* Author to whom correspondence should be addressed.

Received: 2 November 2010; in revised form: 22 December 2010 / Accepted: 10 January 2011 / Published: 13 January 2011

(This article belongs to the Special Issue Gas Sensors - 2010)

Download PDF Full-Text [1306 KB, Updated Version, uploaded 19 January 2011 14:49 CET]

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Abstract: Palladium (Pd) has received attention as an ideal hydrogen sensor material due to its properties such as high sensitivity and selectivity to hydrogen gas, fast response, and operability at room temperature. Interestingly, various Pd nanostructures that have been realized by recent developments in nanotechnologies are known to show better performance than bulk Pd. This review highlights the characteristic properties, issues, and their possible solutions of hydrogen sensors based on the low-dimensional Pd nanostructures with more emphasis on Pd thin films and Pd nanowires. The finite size effects, relative strengths and weaknesses of the respective Pd nanostructures are discussed in terms of performance, manufacturability, and practical applicability.

Keywords: Pd nanostructures; hydrogen sensors

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