Figure 8
PDFs from high-resolution data measured for different times (qmax = 28 Å−1); (a) mixture of crystalline CeO2, TiO2 and ZrO2 (red, 15 min; green, 30 min; blue, 60 min); (b) nano-titania, size < 100 nm (red, 15 min; green, 60 min; blue, 120 min); no significant differences are observed comparing PDFs of the crystalline sample, even with a short acquisition time. This is evidently more relevant for the nano sample, where the PDF obtained in 15 min is strongly affected by the statistical noise at lower and higher r. |