View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by Belarusian State Technological University ISSN 00201685, Inorganic Materials, 2014, Vol. 50, No. 4, pp. 415–418. © Pleiades Publishing, Ltd., 2014. Original Russian Text © O.V. Opimakh, I.I. Kurilo, I.M. Zharskii, 2014, published in Neorganicheskie Materialy, 2014, Vol. 50, No. 4, pp. 448–452. A Mechanism of Bismuth Orthovanadate Structure Formation during Solvothermal Synthesis O. V. Opimakh, I. I. Kurilo, and I. M. Zharskii Belarussian State Technological University, ul. Sverdlova 13a, Minsk, 220050 Belarus email:
[email protected] Received August 14, 2013 Abstract—Using solvothermal synthesis, we have prepared bismuth orthovanadate samples suitable as pig ments for the lacquer and paint coating industry. We have determined their elemental and phase compositions and unitcell parameters. The bismuth orthovanadate structure formation mechanism has been studied in the course of solvothermal synthesis. The physicochemical characteristics of the samples obtained (particle size, true density, oil absorption, and pH of aqueous suspension) have been investigated. DOI: 10.1134/S0020168514040141 INTRODUCTION EXPERIMENTAL In a number of countries, lead and chromium com Bismuth orthovanadate was prepared by solvother pounds are used as yellow anticorrosion pigments in mal synthesis using an alkaline solution of sodium orthovanadate (pH 13) and an acid solution of bis the lacquer and paint coating industry. However, muth nitrate (pH 0) as precursors: because of the ever more stringent requirements for → environmental security, the use of such pigments is Bi(NO3)3 + Na3VO4 BiVO4 + 3NaNO3. limited, and there is an intensive search for alternative, The starting chemicals used were reagentgrade less toxic pigments.