Alkaline O-2 reduction on oxide-derived Au: high activity and 4e(-) selectivity without (100) facets

作者：Min Xiaoquan; Chen Yihong; Kanan Matthew W^*

来源：Physical Chemistry Chemical Physics, 2014, 16(27): 13601-13604.

DOI：10.1039/c4cp01337a

Gold films produced from gold oxide precursors ("oxide-derived Au'') were compared to polyhedral Au nanoparticles for electrocatalytic alkaline O-2 reduction. Despite having no detectable abundance of (100) facets, oxide-derived Au exhibited 4e(-) selectivity and surface-area-normalized activity that rivaled cubic Au nanoparticles with high (100) abundance. The activity of oxide-derived Au likely arises from active sites at the surface terminations of defects that are trapped during gold oxide reduction.

• 出版日期2014