▎ 摘　　要

NOVELTY - Preparing platinum-based single-atom catalyst comprises (i) dissolving graphene, cobalt-containing precursor powder, and terephthalic acid organic ligand in alcoholic solvent 1, stirring to obtain mixed solution 1, subjecting to precipitation and centrifugation, calcining to obtain MOF (Metal-organic frameworks) material doped with graphene; (ii) mixing Pt-based metal precursor solution and alcohol solvent II, and obtaining the mixed solution II after ultrasonication; (iii) carry out microwave heating of the mixed solution 2, adopting ultraviolet lamp to irradiate simultaneously, and obtaining the catalyst slurry that the MOF of graphene doping supports Pt single atom; and (iv) drying the catalyst slurry and calcining. USE - The catalyst is useful in the field of fuel cell oxygen reduction reaction (claimed). ADVANTAGE - The method improves the oxygen reduction ability of the catalyst.