A highly uniform sulfide microsphere with precise and controllable particle size and its preparation method

A sulfide, precise technology, applied in chemical instruments and methods, lead sulfide, zinc sulfide, etc., can solve the problems of narrow particle size range, rough control of product particle size, etc., and achieve the effect of highly uniform particle size
CN109942017BActive Publication Date: 2020-07-14DALIAN UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
DALIAN UNIV OF TECH
Publication Date
2020-07-14

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Abstract

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.
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Description

technical field

[0001] The invention relates to highly uniform sulfide microspheres with precise and controllable particle diameters and a preparation method thereof, belonging to the field of preparation of photonic crystal materials. Background technique

[0002] Semiconductor materials are widely used in solar cells, lasers, photocatalysis and other fields, among which a variety of metal sulfides are the main types of semiconductor materials, such as ZnS, CdS, CuS, PbS, SnS, HgS, MnS, FeS, NiS, CoS, etc. . Further studies have found that semiconductor materials at the micro-nano scale exhibit many unique physical and chemical phenomena, such as quantum effects and nonlinear optical effects. The above phenomena mainly depend on the size, shape and structure of the material. Monodisperse microspheres eliminate the influence of shape on material properties, and the controllable particle size of microspheres can further study the influence of material size on properties. T...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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