Method for preparing silver nanoparticle/titanium dioxide nanotube array

The invention provides a method for preparing a silver nanoparticle/titanium dioxide nanotube array. The method comprises the steps that a specific solution, containing silver ions, prepared by mixing silver salt, ammonia water, polyvinylpyrrolidone and water is selected so that silver nanoparticles obtained through reduction can be evenly dispersed in a titanium dioxide nanotube array, and the sizes of the silver nanoparticles are uniform. According to the method for preparing the silver nanoparticle/titanium dioxide nanotube array, the preparation process is simple, the controllability is high, and the method is suitable for industrial production.