A kind of preparation method and application of boron quantum dots
A quantum dot and boron quantum technology, which is applied in the field of quantum dot preparation, can solve the problems of high toxicity of raw materials, high cost, and long process cycle, and achieve the effects of low cost, short production cycle, and simple process
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Embodiment 1
[0032] A preparation method of boron quantum dots, the steps are:
[0033] (1) Disperse amorphous boron powder with a mass of 0.05g in 50mL of organic solvent, stir fully, and after high-energy ultrasonication, a mixed solution containing boron particles is obtained, wherein the power of the high-energy ultrasonication is 200W, ultrasonic The time is 6s, the interval time is 10s, and the high-energy ultrasonication is 10h;
[0034] (2) 5.0mL of hydrogen peroxide solution (30%) and 0.01g of boric acid powder were added to the mixed solution successively, and the power of the probe-type high-energy ultrasonic crusher was set to 200W, the ultrasonic time was 4s, and the interval time was 4s. Then, the initial product solution was obtained by high-energy ultrasonication for 4h;
[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 dialyze...
Embodiment 2
[0039] A preparation method of boron quantum dots, the steps are:
[0040] (1) Disperse the amorphous boron powder with a mass of 0.25 g in 50 mL of an organic solvent, and after stirring, undergo high-energy ultrasonication to obtain a mixed solution containing boron particles, wherein the power of the high-energy ultrasonication is 800W, and the ultrasonic time is 800W. It is 5s, the interval time is 8s, and the high-energy ultrasonication is 2h;
[0041] (2) 1.0mL of hydrogen peroxide solution (30%) and 0.03g of boric acid powder were added to the mixed solution successively, and the power of the probe-type high-energy ultrasonic crusher was set to 800W, the ultrasonic time was 2s, and the interval time was 10s. Then, the initial product solution was obtained by high-energy ultrasonication for 8h;
[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 boro...
Embodiment 3
[0045] A preparation method of boron quantum dots, the steps are:
[0046] (1) Disperse nano-boron with a mass of 0.35g in 50mL of organic solvent, stir and undergo high-energy ultrasonication to obtain a mixed solution containing boron particles, wherein the power of the high-energy ultrasonication is 1000W, and the ultrasonic time is 4s , The interval time is 4s, and the high-energy ultrasonic crushing is 8h;
[0047](2) 7.5mL of hydrogen peroxide solution (35%) and 0.85g of boric acid powder were added to the mixed solution successively, and the power of the probe-type high-energy ultrasonic crusher was set to 600W, the ultrasonic time was 3s, and the interval time was 4s. Then, the initial product solution was obtained by high-energy ultrasonication for 12h;
[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 deioniz...
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