Hydrogen evolution on Au(111) catalyzed by rhodium nanoislands
Abstract
Pronounced catalysis of hydrogen evolution reaction (HER) by rhodium nanoislands spontaneously deposited on Au(111) has been observed. Different Rh/Au(111) nanostructures were characterized ex situ by both height and phase imaging AFM. The most pronounced catalytic activity for HER in 0.5 M H2SO4 was obtained for 50% Rh coverage. This is ascribed to the suitable size of Rh nanoislands and to the electronic modification of Rh deposit by Au(111) substrate.
Keywords:
Au(111) / Rhodium / Spontaneous deposition / AFM / Hydrogen evolutionSource:
Electrochemistry Communications, 2013, 28, 37-39Publisher:
- Elsevier Science Inc, New York
Projects:
DOI: 10.1016/j.elecom.2012.12.009
ISSN: 1388-2481