Fig. 2

Time evolution of Ce³⁺ luminescence under the oxidant action (C = 0.1 mM) for different specimens of nanoceria. a After HP addition; insert—after HP and PP addition; b after PP addition to 10.0-nm nanoceria in water-DMSO solutions; insert—after PP addition and after NaOH and subsequent PP addition. c pH and Ce³⁺ band intensity (\( {I}_{{\mathrm{Ce}}^{3+}} \)) after PP addition for 10.0-nm nanoceria. d Curves of nanoceria filling by oxygen ρ(t)=1−\( {I}_{{\mathrm{Ce}}^{3+}}(t) \) shown on a log-log plot using data shown in a