10% copper-substituted (BiCUVOX/Bi 2 V 0.9 Cu 0.1 O 5.5−δ ) and 5% copper/titanium double-substituted bismuth vanadate (BiCUTIVOX/Bi 2 V 0.9 (Cu 0.05 Ti 0.05 )O 5.5−δ ) platelets were formed by molten salt synthesis (MSS) using a eutectic KCl/NaCl salt mixture. The product was phase-pure within the limits of X-ray diffraction. The size and form of the platelets could be controlled by changing the heating temperature and time. The crystallite growth rate at a synthesis temperature of 650 • C and the activation energy for grain growth were determined for BICUTIVOX, which experienced inhibited growth compared to BICUVOX. Quasi-equilibrium, multifoil shapes consisting of lobes around the perimeter of the platelets were observed and explained in the context of relative two-dimensional nucleation and edge growth rates.

10% copper substituted (BiCUVOX/Bi2V0.9Cu0.1O5.5-δ) and 5% copper/titanium 10 double-substituted bismuth vanadate (BiCUTIVOX/Bi2V0.9(Cu0.05Ti0.05)O5.5-δ) platelets were formed 11 by molten salt synthesis (MSS) using a eutectic KCl/NaCl salt mixture. The product was phase 12 pure within the limits of x-ray diffraction. The size and form of the platelets could be controlled

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