Method for industrial preparation of nano tungsten bronze of alkali metal by hydrolysis of a coordination compound of cation at a lower temperature

Abstract

The invention discloses a method for preparing nanometer alkali metal tungsten bronze by hydrolysis of a coordination compound of cation at a lower temperature, and the application of nanometer alkali metal tungsten bronze coating. The method adopts one-step low-temperature heating hydrolysis to synthesize nano alkali metal tungsten bronze, and the preparation process requires no special equipment, no high temperature and high pressure, mild process conditions, low energy consumption, short cycle, high productions, high yield and low cost. The synthesized products have good crystallinity, which are CsWO, RbWO, KWO, NaWO, in which X=0.20.33, the synthesized short rod-like alkali metal tungsten bronze particle length is 10˜150 nm, the diameter is 10˜50 nm, and the synthesized isometric alkali metal tungsten bronze particle size is less than 100 nm in all direction. The above powders have excellent near-infrared shielding properties and visible light transmission properties, good UV shielding performance and certain middle and far infrared shielding performance. The nanometer alkali metal tungsten bronze coating prepared by the invention is an simple and controllable preparation process, and has high near infrared shielding performance and excellent ultraviolet shielding performance.