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Preparation method and application of boron oxide quantum dots

A technology of quantum dots and boron oxide, which is applied in the field of quantum dot preparation, can solve the problems of target material microscopic shape limitation, waste materials, etc., and achieve the effect of broad commercial application prospects, environmental friendliness, and uniform size

Active Publication Date: 2021-01-22
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has defects such as wasting materials and limiting the microscopic morphology of the target material.

Method used

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  • Preparation method and application of boron oxide quantum dots
  • Preparation method and application of boron oxide quantum dots
  • Preparation method and application of boron oxide quantum dots

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Disperse 1.6g of ammonium pentaborate and 1.6g of boric acid in 20mL of deionized water and stir evenly, then fill in an inert gas to remove oxygen to obtain a mixed solution of ammonium pentaborate / boric acid, and the stirring time is 1.0h, deoxygenation The time is 0.5h;

[0030] (2) Further hydrothermal reaction to obtain the initial product solution, the set temperature is 180°C, and the holding time is 12h;

[0031] Then add 0.5mL sodium borohydride solution, stir for 1h, then centrifuge at 3500rpm for 15min to obtain boron oxide quantum dot solution;

[0032] (3) The boron oxide quantum dot solution was frozen in a refrigerator, and then dried in a freeze dryer at a drying temperature of -45°C for 24 hours to obtain boron oxide quantum dot powder.

[0033] process such as figure 1 shown.

Embodiment 2

[0035] (1) Disperse 1.6g of ammonium pentaborate and 1.6g of boric acid in 20mL of deionized water and stir evenly, then fill in an inert gas to remove oxygen to obtain a mixed solution of ammonium pentaborate / boric acid, and the stirring time is 1.0h, deoxygenation The time is 1h;

[0036] (2) Further hydrothermal reaction to obtain the initial product solution, set the temperature at 200°C, and hold for 16 hours; then add 0.5mL hydrazine hydrate solution, stir for 1 hour, and then centrifuge at 3500rpm for 15 minutes to obtain the boron oxide quantum dot solution;

[0037] (3) The boron oxide quantum dot solution was frozen in a refrigerator, and then dried in a freeze dryer at a drying temperature of -45°C for 24 hours to obtain boron oxide quantum dot powder.

Embodiment 3

[0039] (1) Disperse 1.6g of ammonium pentaborate and 1.6g of boric acid in 20mL of deionized water and stir evenly, then fill in an inert gas to remove oxygen to obtain a mixed solution of ammonium pentaborate / boric acid, and the stirring time is 1.0h, deoxygenation The time is 0.5h;

[0040] (2) Further hydrothermal reaction to obtain the initial product solution, the set temperature is 180°C, and the holding time is 12h;

[0041] Then add 0.5mL hydrazine hydrate and 0.5mL sodium borohydride mixed solution, stir for 1h, then centrifuge at 3500rpm for 15min to obtain boron oxide quantum dot solution;

[0042] (3) The boron oxide quantum dot solution was frozen in a refrigerator, and then dried in a freeze dryer at a drying temperature of -45°C for 24 hours to obtain boron oxide quantum dot powder.

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Abstract

The invention relates to a preparation method of boron oxide quantum dots, and belongs to the technical field of quantum dot preparation. The method comprises the following steps: dissolving ammoniumpentaborate and boric acid in deionized water, uniformly stirring the mixture to obtain an ammonium pentaborate / boric acid mixed solution, carrying out hydrothermal reaction to obtain an initial product solution, adding a reducing agent solution, fully stirring the solution, and carrying out freeze drying to finally obtain the boron oxide quantum dot powder. The preparation method is simple, conditions are mild, no harmful by-product is generated in the preparation process, and is environmentally friendly; by optimizing the precursor, the structure of the material is controllable, and therefore, the obtained boron oxide quantum dot is uniform in size, has blue fluorescence, can be used as a boron-containing drug for boron neutron capture therapy, and has large-scale production potential and wide commercial application prospect.

Description

technical field [0001] The invention belongs to the technical field of quantum dot preparation, and in particular relates to a preparation method and application of boron oxide quantum dots. Background technique [0002] Boron quantum dots are a new type of boron nanomaterials, especially in the fields of chemical sensors, bioimaging, nanomedicine, solar cells, light-emitting diodes (LEDs), electrocatalysis, neutron capture therapy, and new energy. , and has potential application value in the fields of biology, medicine, energy storage devices, and new semiconductor devices. [0003] The current methods for preparing quantum dots are divided into top-down and bottom-up methods. In the top-down process, macromolecules are destroyed or dispersed into small-sized quantum dots by physical or chemical methods; The bottom-up approach mainly aggregates and carbonizes a series of small molecules into quantum dots through chemical reactions. The top-down method mainly focuses on va...

Claims

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Application Information

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IPC IPC(8): C01B35/10B82Y30/00A61P35/00A61K41/00C09K11/63
CPCC01B35/1027A61K41/0095A61P35/00B82Y30/00C09K11/63C01P2002/72C01P2002/04C01P2002/82C01P2004/64
Inventor 王慧奇王美韩佳城李莹曹红红贾素萍张会念张锦芳胡胜亮
Owner ZHONGBEI UNIV
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