▎ 摘　　要

NOVELTY - Preparation of adjustable composition mesoporous metal oxide two-dimensional sheet involves dispersing graphene oxide in an aqueous solution of potassium oleate, ultrasonically dispersing, slowly adding metal cation solution for cation exchange, precipitating, washing the precipitate with water, drying the precipitate, pyrolyzing at 400-500℃ for 2-4 hours in an inert gas atmosphere, and calcining at 400-450℃ for 6-12 hours in oxidizing atmosphere. The metal cation in the metal cation solution is iron ion, manganese ion, cobalt ion, zinc ion, nickel ion, cerium ion, aluminum ion or yttrium ion. The inert gas atmosphere is nitrogen atmosphere. The oxidation atmosphere is air atmosphere. USE - Preparation of adjustable composition mesoporous metal oxide two-dimensional sheet used in catalysis and energy storage applications. ADVANTAGE - The method is capable of preparing multiple mesoporous two-dimensional mono-metal oxide sheets and binary-to-high-entropy metal oxide sheets, and is simple and the component is adjustable, it can be used as a multiple unitary metal oxide, it also can be binary to high entropy metal oxide. The method overcomes the problem that the existing method only can preparation single metal oxide nano sheet, the method is fussy, and the shape is not controllable, the mesopore structure is not obvious, expanding the preparation of the mesoporous metal oxide 2-dimensional sheet. The metal oxide sheet has a large amount of mesopores and a component that is adjustable.