Nano-copper and preparation method thereof

The invention discloses nano-copper and a preparation method thereof. The preparation process adopts copper chloride dihydrate as the precursor of copper, green ascorbic acids as a reducing agent andpolyvinyl pyrrolidone as a protective agent, a mixed system of glycerol and deionized water serves as solvents in the whole reaction process, and nano-copper particles can be prepared simply and efficiently. Compared with the preparation of nano-copper by a polyol method, because the mixed solvent of the glycerol and the deionized water plays a role in shortening the reaction time, nano-copper with smaller particle sizes can be prepared in a shorter time. The production cost is reduced, the viscosity of a reaction system is reduced, and cleaning of by-products is facilitated. According to thepreparation method, raw materials are easily obtained, the process is simple, the energy consumption is low, agglomeration is less, and the preparation method is easy to implement. The nano-copper particles prepared by the met