| abstract |
The invention belongs to the technical field of core-shell metal organic framework materials, and specifically relates to a core-shell metal sulfide composite material and its preparation method and application. The structure of the core-shell metal sulfide composite material has an "egg yolk structure" The hollow microspheres, in which polyoxometalates provide transition metal oxoacids and ions, and various metal sources provide transition metal ions, and the two have a coordination reaction with the isophthalic acid organic ligand to form a metal organic framework shell; At the same time, the "core" is formed by the reaction of sulfur source and transition metal ions, and the hollow core-shell microspheres with metal sulfide as the core are formed through etching and the different diffusion speeds of ions to the "shell" and "inside the shell". The method of the present invention obtains a gram-level core-shell metal sulfide composite material through a one-step solvothermal method, which is highly efficient, safe, practical and versatile, and is conducive to industrial-scale production. The material is used in nano-reactors, catalysis, adsorption, and energy storage and The field of transformation has broad prospects for development. |