▎ 摘　　要

NOVELTY - Preparation of three-dimensional carbon structure supported platinum catalyst, involves mixing 0.5-1.5 pts. wt. zero-dimensional carbon material, 0.5-1.5 pts. wt. one-dimensional carbon materials, 0.5-1.5 pts. wt. two-dimensional carbon materials, and 1-10 pts. wt. carbon black, dissolving in 20-100 pts. wt. 10 wt.% nitric acid solution, stirring at 60-80degrees Celsius for 5-10 hours, washing the obtained mixture, suction-filtering, drying at 60-80degrees Celsius for 5-10 hours, ball-milling at 250-400 rpm for 1-2 hours to obtain three-dimensional carbon structure powder, loading the powder with 1-10 pts. wt. platinum by mixing 5-20 pts. wt. platinum raw material, 500-800 pts. wt. ethanol, and 50-100 pts. wt. deionized water, dripping sodium hydroxide solution to adjust pH to 11-13, stirring at 70-90degrees Celsius for 2-4 hours, suction-filtering, washing, drying, calcining, vacuum drying, grinding, annealing at 150-400degrees Celsius for 1-3 hours, and plasma-treating. USE - Preparation of three-dimensional carbon structure supported platinum catalyst (claimed) used in proton exchange membrane fuel cell. ADVANTAGE - The method effectively reduces the loading of the platinum catalyst and effectively increases the active specific surface area of the prepared nano- platinum particles. The three-dimensional carbon-based structure provides better electrical conductivity and spatial network structure, which is beneficial to the improvement of catalytic performance. The platinum catalyst is attached to the surface of the three-dimensional carbon structure in a small and uniform manner, which reduces the performance loss caused by the agglomeration of catalytic materials. The method adopts the plasma enhanced chemical vapor deposition system to modify the surface of the material, enriches the functional groups and unsaturated coordination bonds on the surface of the catalyst, and greatly improves the catalytic activity. The method optimizes the annealing process in the post-treatment, and through recrystallization in an inert gas, the residual stress inside the material is reduced, and the stability of the material is improved. DETAILED DESCRIPTION - Preparation of three-dimensional carbon structure supported platinum catalyst, involves mixing 0.5-1.5 pts. wt. zero-dimensional carbon material, 0.5-1.5 pts. wt. one-dimensional carbon materials, 0.5-1.5 pts. wt. two-dimensional carbon materials, and 1-10 pts. wt. carbon black, dissolving in 20-100 pts. wt. 10 wt.% nitric acid solution, stirring at 60-80degrees Celsius for 5-10 hours, washing the obtained mixture, suction-filtering, drying at 60-80degrees Celsius for 5-10 hours, ball-milling at 250-400 rpm for 1-2 hours to obtain three-dimensional carbon structure powder, loading the powder with 1-10 pts. wt. platinum by mixing 5-20 pts. wt. platinum raw material, 500-800 pts. wt. ethanol, and 50-100 pts. wt. deionized water, dripping sodium hydroxide solution to adjust pH to 11-13, stirring at 70-90degrees Celsius for 2-4 hours, suction-filtering, washing, drying, calcining, vacuum drying at 60-80degrees Celsius for 5-10 hours, grinding in a mixed atmosphere of 0-20 vol.% hydrogen and nitrogen at 80-100 sccm, annealing at 150-400degrees Celsius for 1-3 hours, and plasma-treating using plasma-enhanced chemical vapor deposition system by placing the powder in a rotatable ceramic crucible, fixing the crucible by a rotating rod, introducing hydrogen or nitrogen, and plasma-treating at 150 W and 300-500degrees Celsius for 1-3 hours.