Fig. 7From: Influencing Factor Investigation on Dynamic Hydrothermal Growth of Gapped Hollow BaTiO3 Nanospheres a–d SEM images of BaTiO3 samples synthesized via the dynamic hydrothermal process at 180 °C for 10 h with [NaOH] = 1.0 mol/L and different Ba/Ti ratios: a 1.0 (S6), b 1.2 (S7), c 1.5 (S8), and d 2.0 (S9). e The plot of the particle sizes of the BaTiO3 samples as a function of Ba/Ti ratiosBack to article page