Figure 2
From: Ag surface segregation in nanoporous Au catalysts during CO oxidation
Kinetics of coarsening. SEM micrographs of NP Au foams exposed to reactive gases for (a) 0, (b) 2 and (c) 4 h at 273 K. (d) The logarithm of \({s}^{4}-{s}_{in}^{4}\) as a function of time t. Data refer to NP Au foams used in catalytic runs performed at 273 (□), 283 (
), 293 (
) and 303 (
) K. Best-fitted lines are shown.
