▎ 摘　　要

NOVELTY - Preparing noble metal alloy/carbon material supported catalyst comprises (i) mixing noble metal compound, transition metal compound, carbon material oxide with water and adjusting pH to obtain a neutral mixed dispersion solution, (ii) spraying neutral mixed dispersion solution to liquid nitrogen for condensing and freeze-drying to obtain fluffy solid, and (iii) annealing the fluffy solid in a mixed atmosphere to obtain a noble metal alloy/carbon material supported catalyst. USE - The method is useful for preparing noble metal alloy/carbon material supported catalyst. ADVANTAGE - The catalyst: has small size, uniform grain diameter, and good crystallinity, and simple preparation method; does not use any dispersant; is good for mass production of noble metal alloys/carbon materials loaded type load and ultra-small size; has high productivity; prevents and reverses the phenomenon of agglomeration and folding of the carbon material oxide in water caused by the combination of the oxygen-containing functional group and the metal cation by using the alkaline reagent.