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Preparation method and application of selenium-doped carbon quantum dots prepared based on selenium-enriched yeast

A technology of selenium-enriched yeast and carbon quantum dots, applied in chemical instruments and methods, nanotechnology for materials and surface science, luminescent materials, etc., can solve the problems of low yield of selenium-containing carbon quantum dots, utilization of selenium element and Poor stability, adverse effects and other problems, to achieve the effect of protection from oxidative stress, conducive to wide use, safe absorption and utilization

Pending Publication Date: 2022-05-13
SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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Problems solved by technology

[0004] The purpose of this application is to provide a preparation method and application of selenium-doped carbon quantum dots prepared based on selenium-enriched yeast, aiming to solve the problem of the low yield of selenium-containing carbon quantum dots prepared in the prior art, wherein the selenium element is in vivo. Utilization and stability are poor, which is not conducive to the problem of functioning in the human body

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  • Preparation method and application of selenium-doped carbon quantum dots prepared based on selenium-enriched yeast
  • Preparation method and application of selenium-doped carbon quantum dots prepared based on selenium-enriched yeast
  • Preparation method and application of selenium-doped carbon quantum dots prepared based on selenium-enriched yeast

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[0030] The first aspect of the embodiment of the present application provides a method for preparing selenium-doped carbon quantum dots prepared based on selenium-enriched yeast, including the following steps:

[0031] S01. Mixing selenium-enriched yeast and water to obtain a selenium-enriched yeast mixture;

[0032] S02. Incubate the selenium-enriched yeast mixture and the selenium source precursor solution to obtain the precursor-selenium-enriched yeast incubation solution;

[0033] S03. Adjust the pH of the precursor-selenium-enriched yeast incubation solution, perform hydrothermal reaction, and then perform post-treatment to obtain selenium-doped carbon quantum dots.

[0034] The first aspect of the embodiment of the present application provides a method for preparing selenium-doped carbon quantum dots prepared by selenium-enriched yeast. The preparation method uses selenium-enriched yeast and precursors as raw materials, and obtains selenium-doped carbon quantum dots thro...

Embodiment 1

[0059] A preparation method of selenium-doped carbon quantum dots prepared based on selenium-enriched yeast

[0060] Including the following steps:

[0061] ① Weigh 100mg of selenium-enriched yeast and add it to 40ml of ultrapure water, stir evenly for 10mim to obtain a selenium-enriched yeast mixture;

[0062] ② Weigh 10 mg / L selenomethionine and add it to the obtained selenium-enriched yeast mixture, and incubate with stirring at 37°C for 1 hour to obtain the precursor-selenium-enriched yeast incubation solution;

[0063] ③ Adjust the pH of the precursor-selenium-enriched yeast incubation solution to 10, conduct a hydrothermal reaction at 90°C for 24 hours, then centrifuge at 18,000rpm for 15 minutes, and collect the supernatant; then use a 1kDa MWCO membrane for 48 hours, freeze Dry to obtain selenium-doped carbon quantum dots.

[0064] The preparation method of selenium-doped carbon quantum dots prepared based on selenium-enriched yeast provided in Examples 2 to 7 is con...

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Abstract

The invention relates to the technical field of quantum dot materials, in particular to a preparation method and application of selenium-doped carbon quantum dots prepared on the basis of selenium-enriched yeast, and provides the preparation method of the selenium-doped carbon quantum dots prepared on the basis of the selenium-enriched yeast, which comprises the following steps: mixing the selenium-enriched yeast and water to obtain a selenium-enriched yeast mixed solution; performing incubation treatment on the selenium-enriched yeast mixed solution and the selenium source precursor solution to obtain a precursor-selenium-enriched yeast incubation solution; adjusting the pH value of the precursor-selenium-enriched yeast incubation solution, carrying out hydrothermal reaction, and then carrying out post-treatment to obtain the selenium-doped carbon quantum dots. The preparation method is simple and convenient, and mass production can be realized.

Description

technical field [0001] The application belongs to the technical field of quantum dot materials, and in particular relates to a preparation method and application of selenium-doped carbon quantum dots prepared based on selenium-enriched yeast. Background technique [0002] In nanomaterials, solution semiconductor nanocrystals (solution quantum dots) with a size in the quantum confinement range have excellent optical properties, such as high fluorescence quantum yield, absorption bandwidth, narrow emission peak, and good optical stability. Widespread interest in science and industry. In the fields of biolabeling and imaging, light-emitting diodes, lasers, and quantum dot photovoltaic devices, quantum dot research has become one of the hotspots in their respective fields. Quantum dots have been used in practical applications in fields that affect people's daily life such as display (quantum dot backlight TV) and lighting. [0003] Carbon quantum dots (CQDs) are attractive nan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/65C09K11/88B82Y20/00B82Y30/00
CPCC09K11/88C09K11/65B82Y20/00B82Y30/00
Inventor 吴紫媚王林侯峤丹蒋星竹陈婷婷
Owner SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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