Preprint Article Version 1 This version is not peer-reviewed

Quasi-Equilibrium, Multi-Foil Platelets of Copper and Titanium Substituted Bismuth Vanadate, Bi2V0.9(Cu0.1−xTix)O5.5−δ, by Molten Salt Synthesis

Version 1 : Received: 11 March 2018 / Approved: 12 March 2018 / Online: 12 March 2018 (06:46:50 CET)

A peer-reviewed article of this Preprint also exists.

Ring, K.; Fuierer, P. Quasi-Equilibrium, Multifoil Platelets of Copper- and Titanium-Substituted Bismuth Vanadate, Bi2V0.9(Cu0.1−xTix)O5.5−δ, by Molten Salt Synthesis. Crystals 2018, 8, 170. Ring, K.; Fuierer, P. Quasi-Equilibrium, Multifoil Platelets of Copper- and Titanium-Substituted Bismuth Vanadate, Bi2V0.9(Cu0.1−xTix)O5.5−δ, by Molten Salt Synthesis. Crystals 2018, 8, 170.

Journal reference: Crystals 2018, 8, 170
DOI: 10.3390/cryst8040170

Abstract

10% copper substituted (BiCUVOX/Bi2V0.9Cu0.1O5.5−δ) and 5% copper/titanium double-substituted bismuth vanadate (BiCUTIVOX/Bi2V0.9(Cu0.05Ti0.05)O5.5−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 activation energy for grain growth were determined for BICUTIVOX, which experienced inhibited growth compared to BICUVOX. Quasi-equilibrium, multi-foil 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.

Subject Areas

bismuth vanadate, molten salt synthesis, platelet morphology, multi-foil shape, Wulff shape, Ostwald ripening

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