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Preparation method of high-quality tellurium quantum dots

A tellurium quantum, high-quality technology, applied in the field of preparation of high-quality tellurium quantum dots, to achieve the effect of low cost, high yield and high concentration

Inactive Publication Date: 2021-02-09
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no report on the synthesis method of tellurium quantum dots, and how to prepare high-quality tellurium quantum dots still faces great challenges

Method used

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  • Preparation method of high-quality tellurium quantum dots

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Comparison scheme
Effect test

Embodiment 1

[0012] A preparation method of high-quality tellurium quantum dots, comprising the following steps:

[0013] 1) Grind 100 mg of tellurium elemental powder in a mortar;

[0014] 2) Put the ground tellurium powder into a 250ml beaker, add 100ml of water, and mix evenly to obtain a mixed solution;

[0015] 3) Perform ultrasonic peeling on the mixture, the ultrasonic time is 10h, and the ultrasonic power is 800W;

[0016] 4) Finally, the product after ultrasonic stripping is subjected to centrifugal classification, and the rotational speed of centrifugal classification is 10,000 rpm to obtain tellurium quantum dots.

[0017] figure 1 The transmission electron micrograph of the tellurium quantum dot prepared for the present embodiment, by figure 1 It can be seen that the size of the tellurium quantum dots is uniform.

Embodiment 2

[0019] A preparation method of high-quality tellurium quantum dots, comprising the following steps:

[0020] 1) Grind 50 mg of tellurium elemental powder in a mortar;

[0021] 2) Put the ground tellurium powder into a 250ml beaker, add 100ml of 1-ethyl-3-methylimidazolium tetrafluoroborate ionic liquid, and mix evenly to prepare a mixed solution;

[0022] 3) Perform ultrasonic peeling on the mixture, the ultrasonic time is 20h, and the ultrasonic power is 500W;

[0023] 4) Finally, the products after ultrasonic stripping were subjected to centrifugal classification, and the rotational speed of the centrifugal classification was 11,000 rpm to obtain tellurium quantum dots.

Embodiment 3

[0025] A preparation method of high-quality tellurium quantum dots, comprising the following steps:

[0026] 1) Grind 70 mg of tellurium elemental powder in a mortar;

[0027] 2) Put the ground tellurium powder into a 250ml beaker, add 100ml of N-methylpyrrolidone solution, and mix evenly to prepare a mixed solution;

[0028] 3) Perform ultrasonic peeling on the mixture, the ultrasonic time is 15h, and the ultrasonic power is 900W;

[0029] 4) Finally, the product after ultrasonic stripping was subjected to centrifugal classification, and the rotational speed of the centrifugal classification was 15,000 rpm to obtain tellurium quantum dots.

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Abstract

The invention relates to a preparation method of high-quality tellurium quantum dots, belongs to the technical field of nano materials, and solves the technical problem that the tellurium elementary substance size is reduced to quantum dots. The method comprises the following steps: firstly, grinding tellurium elementary substance powder in a mortar; secondly, uniformly mixing the ground telluriumpowder with a solvent to obtain a mixed solution; thirdly, carrying out ultrasonic stripping on the mixed solution; and finally, carrying out centrifugal classification on the product after ultrasonic stripping to prepare the tellurium quantum dot. The tellurium quantum dots prepared by the method have high concentration, high quality and uniform morphology, and can be used as an electrode material of a new energy device and a photoelectric device. The method is mild in reaction conditions, simple in preparation process and convenient for macroscopic preparation, and the prepared tellurium quantum dots are uniform in size and high in purity.

Description

technical field [0001] The invention belongs to the technical field of nanometer materials, and in particular relates to a preparation method of high-quality tellurium quantum dots. Background technique [0002] Tellurium is the sixth main group element. The crystalline tellurium has metallic luster, silvery white, and belongs to the hexagonal crystal system. Tellurium is widely used in existing industrial production and national economy. Adding a small amount of tellurium to copper and copper alloys can improve their machinability and increase their hardness. Since the discovery of graphene, two-dimensional nanomaterials have attracted extensive attention from material scientists due to their unique structures. And further reducing the size of the material to quantum dots, due to the quantum size effect, this type of material exhibits more unique properties. The preparation of tellurium quantum dots through the nanometerization method will have great potential applicatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B19/02C09K11/88B82Y40/00
CPCC01B19/02C09K11/88B82Y40/00
Inventor 曹海亮赵敏郭俊杰
Owner TAIYUAN UNIV OF TECH
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