Flower-like silver micro-nano particles and application thereof in preparation of high-porosity polymer microporous material

The invention discloses a flower-like silver micro-nano particle and application in preparation of a polymer microporous material, and the flower-like silver micro-nano particle is prepared by the following steps: reacting silver nitrate with a structure-directing agent in a solvent, adding a reducing agent into the solution, continuously reacting, centrifuging, taking precipitate, washing, and drying to obtain flower-like silver powder; all the flower-like silver powder is added into a reaction kettle, the humidity of the nitrogen atmosphere in the reaction kettle is controlled to be 10%-15% and kept for 30 min, then a ventilation rotary knob is turned off, a modifier is rapidly injected, the reaction kettle is sealed, a reaction is conducted at the room temperature for 30 min, and flower-like silver micro-nano particles are obtained; the flower-like silver micro-nano particles prepared through the method serve as an efficient heterogeneous nucleating agent, the nucleating efficiency is remarkably improved,