Rapid synthesis technology for metal nanoparticles with particle sizes being uniform

The invention belongs to the field of nano materials and catalysis, and relates to a rapid synthesis technology for metal nanoparticles with the particle sizes being uniform. The problem that the synthesis efficiency in an existing nanoparticle synthesizing process is low is mainly solved. The method includes the steps that metal precursor salt is added into long-chain alkyl amine solvent; a precursor solution is stirred for 20-60min within the temperature range of 30-120 DEG C, so that a clear metal precursor solution is obtained; meanwhile, a vacuum pump is started, the vacuum degree of a reaction system is lowered to 0.01-0.05MPa, and the temperature of the reaction system is raised to 100-200 DEG C; and after reacting lasts for 1-10min within the temperature and vacuum degree range, the metal nanoparticles with the uniform sizes can be obtained. Moreover, the metal nanoparticles with the special morphology can be obtained by changing the vacuum degree and temperature of the synthesis system. By adoption o