Silver-copper-tungsten oxide photochromic composite nano material and preparation method thereof

The invention discloses a silver-copper-tungsten oxide photochromic composite nano material and a preparation method thereof, ordered tungsten oxide (WO3) in which copper is uniformly inserted into crystal lattices is prepared by a simple hydrothermal method, and then silver is loaded on a copper-tungsten oxide nano material by a water bath heating, stirring and dipping method; and therefore, the silver-copper-tungsten oxide composite material which is formed by agglomeration of a plurality of nanorod clusters and is in a microsphere shape is prepared. Due to the interface charge transfer represented by the metal copper and the surface plasma resonance effect of the noble metal silver, the silver-copper co-doped tungsten oxide shows more excellent visible light absorption and stronger photochromic performance. Compared with the prior art, the copper silver-copper-tungsten oxide high-efficiency photochromic composite nano material has the advantages that due to co-doping of tungsten oxide, silver and copper; t