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Pollution-free hydrothermal synthesis method of zinc selenide microspheres and synthesis method of composite material of zinc selenide microspheres

A synthesis method and composite material technology are applied in the non-polluting hydrothermal synthesis of zinc selenide microspheres and the synthesis field of composite materials, which can solve the problems of laboratory personnel injury and high toxicity, and achieve the effect of strong fluorescence intensity.

Pending Publication Date: 2020-09-01
HENAN UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But sodium selenite is highly toxic substance, is the chemical reagent of control sale at present, is difficult to buy on the market, and its toxicity is big, and synthetic process is bigger to the injury of experimenter, therefore, urgently needs to develop a kind of nontoxic, non-toxic Synthetic method of polluted zinc selenide microspheres

Method used

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  • Pollution-free hydrothermal synthesis method of zinc selenide microspheres and synthesis method of composite material of zinc selenide microspheres
  • Pollution-free hydrothermal synthesis method of zinc selenide microspheres and synthesis method of composite material of zinc selenide microspheres
  • Pollution-free hydrothermal synthesis method of zinc selenide microspheres and synthesis method of composite material of zinc selenide microspheres

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Embodiment 1

[0039] The preparation of embodiment 1 zinc selenide microspheres 1, prepare sodium selenosulfate:

[0040] First 0.039g of selenium powder and 0.378g of sodium sulfite are added to the three-necked flask, then 34ml of deionized water is added, and the magnet is added; After reacting at 80°C for 5h, a colorless and transparent sodium selenosulfate solution was obtained.

[0041] Two, the preparation of zinc selenide:

[0042] A: Pour 0.106g of zinc acetate into a beaker and add 17ml of ionized water, stir on a magnetic stirrer for 10 minutes to completely dissolve the zinc acetate into deionized water, then add sodium selenosulfate solution into the beaker, and put it under a magnetic Stir continuously on the stirrer, and at the same time measure 10ml of hydrazine hydrate into the mixture and stir for 5min to obtain the mixture;

[0043] B: Transfer the mixed solution to a high-pressure stainless steel reactor lined with polytetrafluoroethylene, and put the high-pressure sta...

Embodiment 2～6

[0046] Embodiments 2 to 6 are basically the same as in Example 1, except that the reaction times in step B are 2.5h, 3h, 6h, 12h, and 24h respectively, and the ZnSe monomers obtained are respectively designated as ZnSe-2.5, ZnSe -3, ZnSe-6, ZnSe-12, ZnSe-24.

Embodiment 7

[0047] The preparation of embodiment 7 zinc selenide microspheres and graphene composite material

[0048]a: Pour 0.106g of zinc acetate and 0.0475g of graphene oxide into a beaker, and add 17ml of deionized water to the beaker, and stir on a magnetic stirrer for 10 minutes so that the zinc acetate and graphene oxide are completely dissolved in deionized water , then add the sodium selenosulfate solution prepared in Step A of Example 1, and put it on a magnetic stirrer to continuously stir, add 10ml of hydrazine hydrate, and stir for 5min to obtain a raw material solution;

[0049] b: Transfer the raw material solution to a high-pressure stainless steel reactor lined with polytetrafluoroethylene, and put it in a vacuum oven at 180°C for 2 hours;

[0050] c: After the reaction, put the autoclave into ice water to quench quickly, wash the cooled reaction solution with deionized water and absolute ethanol for several times, and then dry it in vacuum at 60°C to obtain the ZnSe / RGO...

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Abstract

The invention belongs to the technical field of semiconductor materials, and discloses a pollution-free hydrothermal synthesis method of zinc selenide microspheres. According to the synthesis method,selenosulfate is used as a selenium source, and hydrazine hydrate is used as a reducing agent, and therefore, the raw material is non-toxic and easy to obtain; and a whole synthesis process is simpleto operate, pollution-free and harmless to operators. The invention also discloses a synthesis method of a zinc selenide microspheres and graphene composite material. The preparation process of the composite material is also simple to operate, non-toxic and pollution-free; the fluorescence intensity of the obtained composite material is higher than that of a ZnSe monomer; the fluorescence lifetimeof the obtained composite material is longer and can reach microseconds; and the composite material is expected to be applied to the field of light emitting diodes.

Description

technical field [0001] The invention belongs to the technical field of semiconductor materials, and relates to a pollution-free hydrothermal synthesis method of zinc selenide microspheres and a synthesis method of composite materials. Background technique [0002] In various fields of information technology, various optoelectronic devices made of semiconductor light-emitting materials have been widely used. Zinc selenide is an important II-VI semiconductor compound material. Its bandgap emission is 2.7eV (460nm) at room temperature and its refractive index is as high as 2.61. It is widely used in light-emitting diodes and laser diodes. [0003] There are also many ways to synthesize ZnSe, such as solvothermal method, hydrothermal method and microemulsion-mediated methods. In the above synthetic methods, due to the unique reaction environment of the solvothermal method, it mainly uses organic solvents as the solvothermal medium, thereby effectively preventing crystal aggrega...

Claims

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Application Information

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IPC IPC(8): B01J27/057H01L33/50
CPCB01J27/0573H01L33/502B01J35/39
Inventor 顾玉宗李鹏超朱宝华
Owner HENAN UNIVERSITY
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