Preparation method of manganese-doped zinc sulfide quantum dot material
A technology of manganese-doped zinc sulfide and quantum dot materials, applied in zinc sulfide, chemical instruments and methods, luminescent materials, etc., can solve the problems of low fluorescence efficiency of quantum dots, complicated operation, low product stability, etc., and achieve high fluorescence Efficiency, high fluorescence intensity, time-consuming effect
Pending Publication Date: 2022-07-15
INST OF AGRI PROD QUALITY SAFETY & STANDARD JIANGXI ACAD OF AGRI SCI +1
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Problems solved by technology
There are many ways to prepare manganese-doped zinc sulfide materials, and the common method is the aqueous phase reaction method, but this method has complex operations, low product stability, and low fluorescence efficiency of quantum dots.
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Embodiment 1
[0043] (1) Dissolve 0.307g of glutathione in 100ml of deionized water, 0.219g of zinc acetate in 10ml of deionized water, and 0.0098g of manganese acetate in 4ml of deionized water, and stir and dissolve at room temperature.
[0044] (2) Add the three solutions of step (1) into a 250ml three-necked flask in turn, and mix thoroughly. After that, 1 mol / L sodium hydroxide solution was slowly added dropwise, and the pH of the mixture was adjusted to 11.
[0045] (3) The final solution obtained in step (2) was stirred at room temperature for 30 minutes under nitrogen protection, then 10 mL of 0.1 mol / L sodium sulfide solution was rapidly added, and vigorously stirred for 20 minutes under nitrogen protection.
[0046] (4) Transfer the solution obtained in step (3) to a high-temperature reactor, react at 160 ° C for 0.5 h, take it out, add acetone to the solution, wash and centrifuge twice, and vacuum dry, and finally obtain stable manganese-doped zinc sulfide quantum dots Material....
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Abstract
The invention provides a preparation method of a manganese-doped zinc sulfide quantum dot material. The preparation method comprises the following steps: S1, mixing glutathione, a zinc source, a manganese source and water to obtain a mixed solution I, and adjusting the pH value of the mixed solution I to be alkaline; s2, introducing an inert gas into the mixed solution I to remove oxygen, then adding a sodium sulfide solution, and continuously stirring and mixing in an inert gas atmosphere to obtain a mixed solution II; s3, performing hydrothermal reaction on the mixed solution II to obtain the manganese-doped zinc sulfide quantum dot material. According to the invention, a stable and completely doped manganese-doped zinc sulfide (Mn / ZnS) quantum dot material with extremely high quantum fluorescence efficiency is prepared through a simple hydrothermal reaction.
Description
technical field [0001] The invention belongs to the field of preparation of zinc sulfide quantum dots, in particular to a preparation method of a manganese-doped zinc sulfide quantum dot material. Background technique [0002] Zinc sulfide material has excellent fluorescence luminescence properties and is widely used in optoelectronic industry, photocatalytic materials, fluorescent probes and other fields. However, its band gap is wide and can only be excited by ultraviolet light with a wavelength less than 367 nm, which limits its wide application in the optical field. In order to increase the light utilization rate of zinc sulfide, it is generally modified by doping, among which manganese doping has been extensively studied. There are many methods for preparing manganese-doped zinc sulfide materials, and the commonly used method is aqueous reaction method, but this method has the disadvantages of complicated operation, low product stability and low fluorescence efficiency...
Claims
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IPC IPC(8): C09K11/56C01G9/08B82Y40/00
CPCC09K11/574C01G9/08B82Y40/00C01P2004/64
Inventor 董一帆艾秋爽邱素艳魏佩玲张大文袁丽娟俞熙仁张金艳
Owner INST OF AGRI PROD QUALITY SAFETY & STANDARD JIANGXI ACAD OF AGRI SCI