Enhancement of Electrocatalytic Activity of Gold Nanoparticles by Sonochemical Treatment

Y.-H. Lee, G. Kim, M. Joe, J.-H. Jang, J. Kim, K.-R. Lee, Y.-U. Kwon, Chem Comm, 46, 5656 (2010).

We demonstrate that gold nanoparticles can become catalytically active for the electrochemical hydrogen oxidation reaction by a sonication treatment. Experimental data and theoretical calculations indicate that the activity arises from the supercooled molten state of gold nanoparticles which are enriched with coordinatively unsaturated gold atoms.

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