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Updated: Jun 12, 2026

Ligand-Mediated Nucleation and Growth of Palladium Metal Nanoparticles
Published on: June 25, 2018
Size-dependent kinetics of hydriding and dehydriding of Pd nanoparticles
Christoph Langhammer1, Vladimir P Zhdanov, Igor Zorić
1Department of Applied Physics, Chalmers University of Technology, S-412 96 Göteborg, Sweden.
Abstract:
Using a new indirect nanoplasmonic sensing method with subsecond resolution, we have studied hydriding and dehydriding kinetics of Pd nanoparticles in the size range 1.8-5.4 nm. Strong particle-size effects are observed. The scaling of the hydriding and dehydriding time scales satisfies power and power-exponential laws. The former (with an exponent of 2.9) is in perfect agreement with Monte Carlo simulations of diffusion-controlled hydriding kinetics. The latter is explained by the effect of surface tension on hydrogen desorption from the surface layer. The approach is generalizable to other reactant-nanoparticle systems.
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