Enhancement of electrocatalytic activity of gold nanoparticles by sonochemical treatment.
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.
Lee
Yang-Hee
YH
Department of Chemistry, BK-21 School of Chemical Materials Science, SAINT, HINT, Sungkyunkwan University, Suwon 440-746, Korea.
Kim
Gunn
G
Joe
Minwoong
M
Jang
Ji-Hoon
JH
Kim
Juyeong
J
Lee
Kwang-Ryeol
KR
Kwon
Young-Uk
YU