A kind of preparation method of tungsten disulfide nanosheet

Abstract

The invention provides a method for preparing tungsten disulfide nanosheets. The steps include: (1) mixing and stirring tungsten disulfide and strong acid, fully infiltrating them, and then adding ferrate or metal peroxide to react; (2) reacting The reactants obtained are slowly added dropwise to deionized water for dilution; (3) the diluted liquid is ultrasonically treated in an ultrasonic dispersing device; (4) the dispersed liquid is allowed to stand to remove the precipitate that has not been peeled off or Tungsten disulfide with low peeling degree; (5) The upper liquid after standing is subjected to suction filtration, and the obtained material is first washed with hydrochloric acid, and then washed with deionized water until neutral; (6) Finally, the obtained product is dried Process to obtain tungsten disulfide nanosheets. The method of the present invention prepares tungsten disulfide nanosheets through the reaction of strong acid and ferrate or metal peroxide and ultrasonic peeling, which is safe, stable, pollution-free, easy to obtain raw materials, easy to operate, simple equipment, high yield, and high product quality. good.

Description

technical field

[0001] The invention belongs to the technical field of preparation methods of inorganic non-metallic materials, and specifically relates to a method for preparing tungsten disulfide nanosheets that is safe, stable, pollution-free, simple to operate, high in yield and good in product quality. Background technique

[0002] In 2004, Andre Geim and Konstantin Novoselov, physicists at the University of Manchester, successfully separated graphene from graphite by micromechanical exfoliation. A wave of research on the synthesis and properties of 2D layered structure materials has started. Tungsten disulfide (WS 2 ) is a 2D layered material that has attracted much attention from researchers. Tungsten disulfide is a compound of tungsten and sulfur. It has a hexagonal layered structure similar to graphite. The layers are connected by weak van der Waals force. The powder is dark gray, slightly soluble in cold water, soluble in hot water, at room temperature It does n...

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