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Preparation method and applications of boron quantum dots

A quantum dot and boron powder technology, applied in the field of quantum dot preparation, can solve the problems of long process cycle, high toxicity of raw materials, high cost, etc., and achieve the effect of simple process, low cost and short production cycle

Active Publication Date: 2019-09-03
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the shortcomings of high cost, long process cycle and high toxicity of raw materials in the existing boron quantum dot preparation method, the present invention provides a high-energy ultrasonic crushing assisted liquid phase stripping process at room temperature and normal pressure. Preparation method of boron quantum dots with high yield

Method used

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  • Preparation method and applications of boron quantum dots

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Experimental program
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Effect test

Embodiment 1

[0032] A preparation method of boron quantum dots, the steps are:

[0033] (1) Disperse 0.05g of amorphous boron powder in 50mL of organic solvent, stir thoroughly, and obtain a mixed solution containing boron particles after high-energy ultrasonic crushing, wherein the power of the high-energy ultrasonic crushing is 200W, ultrasonic The time is 6s, the interval is 10s, and the high-energy ultrasonic crushing is 10h;

[0034] (2) Add 5.0mL hydrogen peroxide solution (30%) and 0.01g boric acid powder to the mixed solution successively, set the power of the probe-type high-energy ultrasonic breaker to 200W, the ultrasonic time to 4s, and the interval time to 4s, Then, it was crushed by high-energy ultrasonic for 4 hours to obtain the initial product solution;

[0035] (3) Add 0.05g of sodium borohydride powder to the initial product solution, and then centrifuge at 3500rpm for 15min to obtain boron quantum dots;

[0036] (4) The boron quantum dots were dialyzed in deionized wa...

Embodiment 2

[0039] A preparation method of boron quantum dots, the steps are:

[0040] (1) Disperse amorphous boron powder with a mass of 0.25g in 50mL of organic solvent, and after stirring, undergo high-energy ultrasonic crushing to obtain a mixed solution containing boron particles, wherein the power of the high-energy ultrasonic crushing is 800W, ultrasonic time 5s, interval time 8s, high-energy ultrasonic crushing 2h;

[0041] (2) Add 1.0mL hydrogen peroxide solution (30%) and 0.03g boric acid powder to the mixed solution successively, set the power of the probe-type high-energy ultrasonic breaker to 800W, the ultrasonic time to 2s, and the interval time to 10s, Then, it was crushed by high-energy ultrasonic for 8 hours to obtain the initial product solution;

[0042] (3) Add 0.08g of sodium borohydride powder to the initial product solution, and then centrifuge at 9000rpm for 20min to obtain boron quantum dots;

[0043] (4) The boron quantum dots were dialyzed in deionized water f...

Embodiment 3

[0045] A preparation method of boron quantum dots, the steps are:

[0046] (1) Disperse 0.35g of nano-boron in 50mL of organic solvent, stir and undergo high-energy ultrasonic crushing to obtain a mixed solution containing boron particles, wherein the power of high-energy ultrasonic crushing is 1000W, and the ultrasonic time is 4s , The interval time is 4s, and the high-energy ultrasonic crushing is 8h;

[0047](2) Add 7.5mL hydrogen peroxide solution (35%) and 0.85g boric acid powder to the mixed solution successively, set the power of the probe-type high-energy ultrasonic breaker to 600W, the ultrasonic time to 3s, and the interval time to 4s, Then, it was subjected to high-energy ultrasonic crushing for 12 hours to obtain the initial product solution;

[0048] (3) Add 0.10g of sodium borohydride powder to the initial product solution, and then centrifuge at 6000rpm for 30min to obtain boron quantum dots;

[0049] (4) The boron quantum dots were dialyzed in deionized water...

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Abstract

The invention relates to a preparation method and applications of boron quantum dots, and belong to the technical field of preparation of quantum dots. The preparation method comprises: dispersing boron powder in an organic solvent, and stirring uniformly to obtain a mixed solution containing boron particles; adding a hydrogen peroxide solution and boric acid powder, and carrying out high-energy ultrasonic breaking to obtain a primary product solution; and adding sodium borohydride, and carrying out centrifugation to obtain the boron quantum dots. According to the present invention, the boronquantum dots are prepared by using the boron powder as the boron source for preparing fluorescent boron quantum dots and using the organic solvents isopropanol and tetrahydrofuran as the double-drivechemical etching agent through the high-energy ultrasonic breaking assisted liquid phase stripping method, have characteristics of uniform size and slight green fluorescence, can be used as a boron-containing drug for boron neutron capture therapy, and has large-scale production potential and broad commercial application prospects.

Description

technical field [0001] The invention belongs to the technical field of quantum dot preparation, and relates to a preparation method and application of boron quantum dots. Background technique [0002] Boron quantum dots are following carbon quantum dots, boron nitride quantum dots, BC x Another new type of quantum dot material after quantum dots, not only has the characteristics of low toxicity, chemical inertness, no light flicker and easy functionalization, but also has a strong affinity with cell tissues, and can be used to prepare boron neutron capture therapy Boron-containing drugs. However, due to the complexity of the boron structure, the preparation method of boron quantum dots has disadvantages such as high cost, long process cycle, and high toxicity of raw materials, which greatly limits the application of boron quantum dots in biological sciences. [0003] At present, the methods for preparing boron nanostructures mainly focus on magnetron sputtering, chemical v...

Claims

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Application Information

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IPC IPC(8): C01B35/02C09K11/63B82Y40/00
CPCC01B35/023C09K11/63B82Y40/00
Inventor 王慧奇李莹安铎苟立孙立文崔化若苏建云王延忠曹红红李宁常青薛超瑞胡胜亮
Owner ZHONGBEI UNIV
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