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