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Zinc sulphide micron hollow sphere and preparation thereof

A technology of zinc sulfide and hollow balls, applied in the direction of zinc sulfide, etc., can solve the problems of complicated process, multiple raw materials, easy to pollute the environment, etc., and achieve the effect of simple and convenient method, less material consumption and high production efficiency

Inactive Publication Date: 2009-07-22
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are deficiencies in this hollow sphere and its synthesis method. First of all, the rods that constitute the spherical shell are not arranged in an orderly manner, but piled up in disorder to form the shell, which may affect the nano-effect of zinc sulfide. negative impact on the controllability; secondly, the synthesis method needs more raw materials, and the process is more complicated, which is easy to pollute the environment

Method used

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  • Zinc sulphide micron hollow sphere and preparation thereof
  • Zinc sulphide micron hollow sphere and preparation thereof
  • Zinc sulphide micron hollow sphere and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1: Complete the preparation in sequence according to the following steps: the first step, mix zinc nitrate, thioacetamide and water to obtain a precursor solution, the weight between zinc nitrate, thioacetamide and water in the precursor solution The ratio is 0.4:0.3:20; wherein, the water is deionized water. In the second step, the precursor solution is placed under a pressure of 5×10 5 Pa, react at 180°C for 15 hours to obtain a precipitated product, and then wash the precipitated product with a solvent and dry it in vacuum; wherein, after the reaction of the precursor solution is completed, the precipitated product is obtained by centrifugation at a speed of 4000rpm / min. The washing time is 5min, the washing solvent is deionized water, the number of washing is 3 times, and the vacuum degree during vacuum drying is 1×10 -5 Pa, the drying treatment is vacuum heating at 50°C for 4h. made as Figure 4 a, and if figure 1 The curve in (3), Figure 5 The cur...

Embodiment 2

[0020] Embodiment 2: complete the preparation in sequence according to the following steps: the first step, zinc nitrate, thioacetamide and water are mixed to obtain a precursor solution, the weight between zinc nitrate, thioacetamide and water in the precursor solution The ratio is 0.45:0.25:23; wherein, the water is distilled water. After that, polyethylene glycol is added to the precursor solution under stirring, wherein the weight ratio between polyethylene glycol and zinc nitrate is 0.2:0.45, the molecular weight of polyethylene glycol is 4000mol / g, polyethylene glycol The stirring speed of adding to the precursor solution is 100rpm / min, and the stirring time is 30min. In the second step, the precursor solution is placed under a pressure of 6×10 5 Pa, react at 190°C for 13 hours to obtain a precipitated product, then wash the precipitated product with a solvent and dry it in vacuum; wherein, after the reaction of the precursor solution is completed, the precipitated prod...

Embodiment 3

[0021] Embodiment 3: Complete the preparation in sequence according to the following steps: the first step, mix zinc nitrate, thioacetamide and water to obtain a precursor solution, the weight between zinc nitrate, thioacetamide and water in the precursor solution The ratio is 0.5:0.2:25; wherein, the water is deionized water. Afterwards, polyethylene glycol is added to the precursor solution under stirring, wherein the weight ratio between polyethylene glycol and zinc nitrate is 0.3:0.5, the molecular weight of polyethylene glycol is 4000mol / g, polyethylene glycol The stirring speed of adding to the precursor solution is 200rpm / min, and the stirring time is 25min. In the second step, the precursor solution is placed under a pressure of 7×10 5 Pa, react at 200°C for 12 hours to obtain a precipitated product, then wash the precipitated product with a solvent and dry it in vacuum; wherein, after the reaction of the precursor solution is completed, the precipitated product is ob...

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Abstract

The invention discloses a zinc sulfide micron hollow sphere and a preparation method thereof. The hollow sphere comprises zinc sulfide, particularly, the zinc sulfide takes the shape of a micron hollow sphere with the diameter of 0.7 to 6.5 Mum, and a spherical shell is formed by nanometer rod arrays. The rod axis of the nanometer rod arrays points to the center of the micron hollow sphere. The length of the nanometer rod is 100nm to 400nm and the diameter of the rod is 50nm to 200nm; the method includes a hydro-thermal method that comprises steps as follows: step one. zinc nitrate, thiacetamide and water are mixed to obtain a precursor solution, wherein, weight proportion of zinc nitrate, thiacetamide and water is 0.4 to 0.6:0.1 to 0.3:20 to 30; step two. the precursor solution reacts under the pressure of 5 to 8 multiplied by 10Pa and the temperature of 180 DEG C to 220 DEG C for 8h to 15h to obtain precipitate products, and then the precipitate products are washed by a solvent and processed by vacuum drying to obtain the zinc sulfide micron hollow sphere. The zinc sulfide micron hollow sphere can be widely applied to the fields of medicine engineering, cosmetics, biotechnology, photochemical catalysis, photonic devices and the like, and is characterized by simple and convenient preparation method, little material consumption and no pollution.

Description

technical field [0001] The invention relates to a hollow sphere and a preparation method thereof, in particular to a zinc sulfide micron hollow sphere and a preparation method thereof. Background technique [0002] Zinc sulfide (ZnS) is a typical direct-bandgap, short-wavelength II-VI semiconductor material. Its band gap is wide, and the excitonic effect is obvious at room temperature. It is more suitable for making optoelectronic devices, such as high-density information reading and writing devices, full-color display devices, photoelectric conversion devices, nonlinear optical devices, underwater communication devices, biological and medical engineering devices. At the same time, ZnS has high infrared transmission performance and excellent optical and thermal properties in the infrared band, and is a good material for aircraft and laser windows. In addition, nano-ZnS has gas-sensing properties, has high sensitivity and selectivity to hydrogen sulfide, and can be used as ...

Claims

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Application Information

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IPC IPC(8): C01G9/08
Inventor 罗媛媛李广海段国韬
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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