▎ 摘　　要

NOVELTY - Preparing nano-titanium dioxide loaded graphene high-activity catalyst comprises (i) mixing titanium source with liquid carbon dioxide, reacting with water and hydrolyzing to obtain titanium dioxide, and (ii) adding a nickel-based catalyst into the above reaction system, introducing hydrogen gas, heating to 900-1100 degrees C and reacting to obtain final product. USE - The method is useful for preparing nano-titanium dioxide loaded graphene high-activity catalyst. ADVANTAGE - The method improves catalytic performance of catalyst.