A kind of preparation method of barium scandium tantalate powder

Abstract

The invention discloses a method for preparing barium scandium tantalate powder. The method comprises the steps of thoroughly dissolving a barium salt, a tantalum salt, a scandium salt and different cross-linking agents, which serve as raw materials, into a methanol-water mixture solution, then, carrying out cross-linking reaction at a certain temperature, then, mixing with a molten salt, grinding, so as to thoroughly mix uniformly, carrying out high-temperature reaction, then, cooling to room temperature, and then, carrying out water washing and drying, thereby obtaining the barium scandium tantalate powder, wherein the barium salt is either or a mixture of barium chloride and barium nitrate, the tantalum salt is either or a mixture of tantalum pentachloride and pentaethoxy tantalum, the scandium salt is either or a mixture of scandium chloride and scandium nitrate, the cross-linking agents are either or a mixture of urea and citric acid, and the molten salt is a mixture of sodium chloride and barium chloride. The method has the advantages that the preparation procedures are simplified, the preparation cost is low, the pollution to an environment cannot be caused, industrialized large-scale preparation is facilitated, and the prepared product can be applied to the fields of ferroelectrics, photoelectricity, photocatalytic hydrogen generation, fuel cells and the like.

Description

technical field

[0001] The invention belongs to the technical field of preparation of inorganic non-metallic materials, and in particular relates to a preparation method of scandium barium tantalate powder. Background technique

[0002] The general molecular formula of perovskite-type compounds is ABO 3 , this type of compound was first discovered as calcium titanate (CaTiO 3 ) compound, hence the name. Physicists and chemists usually refer to the ratio of elements in their molecular formula (1:1:3), so it is also called "113 structure". Usually a cubic crystal, the perovskite compound crystal structure has many characteristics, and it is widely used and studied in condensed matter physics and chemical catalysis. Perovskite oxide is an inorganic material with unique physical and chemical properties. The A position is generally a rare earth or alkaline earth element ion, and the B position is a transition element ion. The A and B positions can also be replaced by other met...

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