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Nanomaterials 2016, 6(12), 226; doi:10.3390/nano6120226

The Chemical Deposition Method for the Decoration of Palladium Particles on Carbon Nanofibers with Rapid Conductivity Changes

1
Nano Fusion Technology Research Group, Division of Frontier Fibers, Institute for Fiber Engineering (IFES), Interdisciplinary Cluster for Cutting Edge Research (ICCER), Shinshu University, Tokida 3-15-1, Ueda, Nagano 386-8567, Japan
2
Department of Chemistry, Inha University, Incheon 22212, Korea
3
Department of Chemistry and Research Institute for Natural Sciences, Hanyang University, Seoul 04763, Korea
4
Department of Chemical Engineering, Hanyang University, Seoul 04763, Korea
5
Department of Organic and Nano Engineering, Hanyang University, Seoul 04763, Korea
*
Author to whom correspondence should be addressed.
Academic Editor: Thomas Nann
Received: 24 October 2016 / Revised: 15 November 2016 / Accepted: 22 November 2016 / Published: 29 November 2016
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Abstract

Palladium (Pd) metal is well-known for hydrogen sensing material due to its high sensitivity and selectivity toward hydrogen, and is able to detect hydrogen at near room temperature. In this work, palladium-doped carbon nanofibers (Pd/CNFs) were successfully produced in a facile manner via electrospinning. Well-organized and uniformly distributed Pd was observed in microscopic images of the resultant nanofibers. Hydrogen causes an increment in the volume of Pd due to the ability of hydrogen atoms to occupy the octahedral interstitial positions within its face centered cubic lattice structure, resulting in the resistance transition of Pd/CNFs. The resistance variation was around 400%, and it responded rapidly within 1 min, even in 5% hydrogen atmosphere conditions at room temperature. This fibrous hybrid material platform will open a new and practical route and stimulate further researches on the development of hydrogen sensing materials with rapid response, even to low concentrations of hydrogen in an atmosphere. View Full-Text
Keywords: carbon nanofiber; hydrogen sensor; palladium-doped carbon nanofibers; conductivity change; volume change; chemical deposition carbon nanofiber; hydrogen sensor; palladium-doped carbon nanofibers; conductivity change; volume change; chemical deposition
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Lee, H.; Phan, D.-N.; Kim, M.; Sohn, D.; Oh, S.-G.; Kim, S.H.; Kim, I.S. The Chemical Deposition Method for the Decoration of Palladium Particles on Carbon Nanofibers with Rapid Conductivity Changes. Nanomaterials 2016, 6, 226.

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