▎ 摘　　要

NOVELTY - Synthesizing reduced graphene oxide (RGO)-platinum composite nanomaterial comprises (i) dissolving sodium acetate in water, adjusting the pH value to 5-6.5 with glacial acetic acid and diluting with water, (ii) using the above buffer solution as solvent to obtain chitosan solution A having concentration of 0.1-10 mg/ml, and (iii) using the solution A as solvent and ultrasonically treating at room temperature for 1-10 hours to obtain reduced graphene suspension, adding obtained aqueous phase-dispersed platinum suspension in a molar ratio (reduced graphene oxide to platinum) of 10:1-1:10, ultrasonically treating for 0.1-10 hours, centrifuging and washing the resulting product. USE - The method is useful for synthesizing reduced graphene oxide-platinum composite nanomaterial. ADVANTAGE - The method: is simple and easy; and produces product having uniform particle size, controllable shape and excellent fluorescence effect.