Ru-based heterojunction catalyst, preparation method and application thereof

Abstract

The application belongs to the technical field of catalysts, and particularly relates to a Ru-based heterojunction catalyst and a preparation method and application thereof. The preparation method of the Ru-based heterojunction catalyst comprises the following steps: dissolving sodium tungstate dihydrate in deionized water, adjusting the pH of the solution to be acidic, sequentially adding oxalic acid, ammonium sulfate and ruthenium trichloride into the solution, and stirring uniformly; inert gas is introduced, and the precipitate is centrifugally washed by deionized water and vacuum dried to obtain solid A; the solid A is subjected to rapid Joule heat shock under a hydrogen argon atmosphere to obtain Ru-doped WO3 heterojunction nanoparticles. The application has the characteristics of high diffusion coefficient and high reaction rate, and effectively controls the microstructure of metal oxides, overcomes the problems of slow heating rate, long reaction time and limited generation of oxygen vacancies of material crystals in the preparation process of the traditional hydrothermal method. Element diffusion and lattice relaxation are inhibited, and high-concentration oxygen vacancies and heterojunction interface stress are stabilized in the material.

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