▎ 摘　　要

NOVELTY - Double-core-shell-shell platinum catalyst comprises a core body and a shell layer. The core body is silica microspheres. The shell layer comprises a titanium dioxide layer and a graphene oxide layer arranged in an order from inside to outside. The composition of the titanium dioxide layer includes anatase titanium dioxide. The graphene oxide layer is loaded with platinum. USE - Used as double-core-shell-shell platinum catalyst. ADVANTAGE - The catalyst has hydrogen production amount reached up to 39.26 mmol/g in the reaction for 6 hours. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing catalyst, comprising (a) providing a basic silica microsphere dispersion as an alkaline core dispersion; (b) adding an organic titanium source solution to the alkaline core dispersion, and obtaining a single-layer core-shell structure carrier after hydrolysis; (c) sequentially grinding and calcining the single-layer core-shell structure carrier to obtain a crystalline state a single-layer core-shell structure carrier; (d) subjecting the crystalline single-layer core-shell structure carrier to amino modification to obtain a modified single-layer core-shell structure carrier; (e) adding the modified single-layer core-shell structure carrier with aqueous dispersion of graphene oxide dropwise to the aqueous dispersion to carry out a coating reaction, and then the solid material in the reaction liquid is washed to obtain a double-layer core-shell structure carrier; and (f) double-layer core-shell structure carrier mixture is impregnated into an aqueous solution of platinum acid to carry out a platinum loading to obtain a platinum catalyst having a two-layer core-shell structure, where the aqueous solution of platinum acid includes platinum acid, a reducing agent and polyvinyl alcohol.