Fig. 3
From: Self-activated surface dynamics in gold catalysts under reaction environments
Au–AgO nanofacets as the essential atomic structure in NPG. a A typical nanofacet stabilized by silver atoms located at the top atomic column with oxygen atoms in 100% O2 (100 Pa) and b the nanofacet at the moment of instant desorption of oxygen atoms for the oxidation of CO molecules in 1 vol.% CO/air (100 Pa). From left to right in a, b are ETEM images, simulated images, and the models after ab initio calculations, respectively. Gold, silver, and red color balls represent Au, Ag, and O atoms, respectively. Quantitatively measured D in ETEM images agree well with those in the models, as seen in a, b. Distances between the inter-atomic columns near the top atomic columns are also shown. Scale bars: 0.2 nm
