Colloidal Clusters of Bimetallic Core-Shell Nanoparticles for Enhanced Sensing of Hydrogen in Aqueous Solution

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Developing sensitive and stable hydrogen sensors is of great importance for sustainable energy development. Here, a novel hydrogen sensing platform is described based on colloidal clusters of Au@Pd core-shell nanoparticles (Au@Pd NPCs) with characteristic localized surface plasmon resonance (LSPR) properties. Au@Pd NPCs with well-controlled topologies exhibit highly pronounced sensitivity for LSPR-based hydrogen sensing in aqueous solution in comparison to their nanoparticle counterparts and previously reported Au-Pd bimetallic nanostructures, which can be attributed to highly promoted plasmonic field resulting from the cluster formation. Furthermore, Au@Pd NPCs show stable sensing capability for repeated hydrogen sensing cycles. The present strategy for devising high-performance LSPR-based hydrogen sensors via the controlled assembly of bimetallic nanoparticles can be applied to the development of efficient plasmonic platforms for various sensing applications.
Publisher
WILEY-V C H VERLAG GMBH
Issue Date
2018-05
Language
English
Article Type
Article
Keywords

NOBLE-METAL NANOCRYSTALS; RAMAN-SPECTROSCOPY; CATALYTIC-REACTIONS; AU NANORODS; LIGHT; SHAPE; ELECTROCATALYSIS; PLATFORM; SENSORS; ENERGY

Citation

PARTICLE & PARTICLE SYSTEMS CHARACTERIZATION, v.35, no.5

ISSN
0934-0866
DOI
10.1002/ppsc.201700380
URI
http://hdl.handle.net/10203/243717
Appears in Collection
CH-Journal Papers(저널논문)
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