Pd–Ag Alloy Nanoparticle Chains Deposited on Carbon Fiber for Hydrogen Sensing
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.
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Document Type: Research Article
Publication date: 01 January 2012
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