Pd–Ag Alloy Nanoparticle Chains Deposited on Carbon Fiber for Hydrogen Sensing

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Abstract:

Pd–Ag alloy nanoparticle chains were fabricated on carbon fibers and hydrogen sensing performance was studied in present work. The mechanism for sensing hydrogen gas was discussed. A scanning electron microscopy equipped with energy dispersed X-ray spectrometer was used to characterize the morphology and composition of the alloy nanoparticle chains. The results showed that the developed sensors responded to hydrogen gas from 0.2 to 10.0% at room temperature and had the advantages of fast response and high sensitivity. There were two linear relation scopes between the hydrogen concentration ranges of 0.2–2.0% and 2.0–4.0%. The current response kept to constant over 4.0%. The sensors showed good reversibility and stability. Pd–Ag alloy nanoparticle chains on carbon fibers will become a promising sensitive material for hydrogen detection at room temperature.

Keywords: CARBON FIBER; ELECTRO-DEPOSITION; HYDROGEN SENSORS; NANOPARTICLE CHAINS; PD-AG ALLOY

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/sl.2012.2307

Publication date: January 1, 2012

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