HIGHLY UNIFORM SULPHIDE MICROSPHERE WITH PRECISELY CONTROLLABLE PARTICLE SIZE AND PREPARATION METHOD THEREFOR

摘要

A highly uniform sulphide microsphere with precisely controllable particle size and a preparation method therefor. The present method is based on the idea of a core-shell-shell structure, and comprises the two processes of primary "core" growth and secondary "layer-layer" growth. In the first growth step, sulphide nanospheres with stable particle size are obtained by means of stable reaction conditions; in the subsequent steps, the particle size of the nanospheres can be precisely controlled by means of controlling the timing and amount of the addition of the metal and sulphur source. According to said synthesis method, by means of a preset target particle size and precisely designing the experiment steps, sulphide nanospheres of the target particle size can be obtained; in addition, the adjustable particle size range of the present method is significantly increased, the adjustable range being 100 nm-1000 nm.