Metal-based broadband antireflection self-cleaning bionic composite membrane as well as preparation and application thereof

The invention discloses a metal-based broadband antireflection self-cleaning bionic composite membrane as well as preparation and application thereof. The preparation comprises the following steps ofA, dissolving a first adhesive and a first curing agent in a first solvent to prepare a bottom-layer film solution; dissolving hydrophobic silicon dioxide nanoparticles, a low surface energy material,a multi-walled carbon nanotube, a second adhesive and a second curing agent in a second solvent to prepare a surface-layer film solution; and B, coating the bottom-layer film solution on a metal basefor m times, drying and forming a bottom-layer film; and coating the surface-layer film solution on the surface of the bottom-layer film for n times, drying and forming a surface-layer film, whereinm and n are independently selected from a natural number greater than 0 and less than 10. The preparation method disclosed by the invention is easy to operate and low in cost, and can be used for realizing large-area preparation