▎ 摘　　要

NOVELTY - Preparing hollow gold nanosphere by fast sintering involves adding a proper amount of base material into diethylene glycol, stirring for dissolving, adding 0.1mmol of gold bromide, stirring for dissolving again, adding a reducing agent with a stoichiometric ratio of 1-2 times of the reducing agent to reduce the gold bromide, centrifuging at 8000 rpm, taking precipitate, washing with n-hexane and acetonitrile solution for 3 times respectively, and drying. The gold nanoparticles are loaded on the substrate on a heating medium which is heated rapidly, or the gold nanoparticles loaded are pressed on the substrate into a sheet for direct use, then direct current power supply is connected to two ends of the heating medium or the gold nanoparticle sheet loaded on the substrate. The instantaneous large current of 50-200A is introduced, the surface of a sample enables to reach 1400-2500K, the temperature is maintained for 5-60 seconds, and finally the sample is taken out. USE - Method for preparing hollow gold nanosphere used in biological medicine, optical, and energy catalysis field of practical application. Can also be used in biomedicine, optical and energy-catalytic field. ADVANTAGE - The method enables to prepare hollow gold nano-sphere that has high specific surface area, stable structure, and has wide application prospect in the field of biological medicine, optical, and energy catalysis. The material preparation time is short, and does not introduce new impurities. The obtained product is pure. The method is simple, cost-effective, and can be prepared in large scale. DESCRIPTION OF DRAWING(S) - The drawing shows an X-ray diffraction pattern of carbon-supported gold nanoparticles prepared in Example 1. (Drawing includes non-English language text).