Table 1. BET Specific Surface Area and O₂-TPD Results for FSP-Synthesized Nanoceria with 10, 30, and 50 at. % Si and Ta Dopings.

	surface area (m2/g)	crystal size (nm)a	relative OSCb	low temp. peak portion (%)c	low temp. peak (°C)
CeO2	146	11.9	1.00	58.2	91
10 at. % Si–CeO2	108	10.9	0.92	46.1	127
30 at. % Si–CeO2	101	10.1	1.00	5.3	86
50 at. % Si–CeO2	110	11.6	1.22
10 at. % Ta–CeO2	97	10.9	0.93	39.0	147
30 at. % Ta–CeO2	78	11.6	0.92	6.4	88
50 at. % Ta–CeO2	56	7.9	0.73

^aXRD-estimated average crystal size.

^bRelative OSC calculated from the volume of oxygen desorbed relative to the nanoceria.

^cPercentage of total oxygen desorbed arising from the lower temperature peak (shaded in blue in Figure 2b).