Crystal growth of BiVO4 from the K−Bi−V−Mo−O molten system

TitleCrystal growth of BiVO4 from the K−Bi−V−Mo−O molten system
Publication TypeJournal Article
Year of Publication2014
AuthorsBychkov, KL, Terebilenko, KV, Slobodyanik, MS
Abbreviated Key TitleDopov. Nac. akad. nauk Ukr.
DOI10.15407/dopovidi2014.05.116
Issue5
SectionChemistry
Pagination116-120
Date Published5/2014
LanguageUkrainian
Abstract

The  synthetic conditions of BiVO4 under the crystallization  from the molten system of K−Bi−V−Mo−O at the ratios of the starting components V/Mo = 0.50 – 6.00 and K/(V + Mo) = 0.55 – 2.00 with fixed to 10% (mol.) content of Bi2O3 are optimized. The compound crystallizes in the monoclinic system, space group I2/a, with unit cell parameters: a = 0.5195(2), b = 1.1701(1), c = 0.5092(3) nm; β= 90.38(1)º ; Z = 4, possessing the scheelite-related structure. The crystallization fields of K3Bi2(VO4)3 and K5Bi(MoO4)4 under these conditions of synthesis have been determined. It is shown that the application of molybdate melts can be successfully used for the control over the morphology and the structure of monoclinic BiVO4.
KeywordsCrystal growth of BiVO4, K−Bi−V−Mo−O molten system
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