Figure 3. Dependence of surface area of a crystalline domain (obtained from the Rietveld analysis) on particle size.

Reprinted with permission from Fig. 4 page 5495 in vol. 135 Copyright 2013 American Chemical Society. The inset shows the temperature dependence for 50%-conversion of CO to CO₂ (T₅₀) as a function of particle size, as reported in ref. 6. The direction of the arrow indicates higher CO oxidation capability.