A kind of preparation method of molybdenum disulfide quantum dot
A technology of molybdenum disulfide and quantum dots, applied in the direction of molybdenum sulfide, etc., can solve problems such as time-consuming, complicated preparation process, and large environmental pollution, and achieve the effect of simple equipment, simple process, and wide application range
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0025] A method for preparing molybdenum disulfide quantum dots, comprising the following steps: (1) dispersing molybdenum disulfide powder in absolute ethanol, and the concentration of the solution prepared by dispersing the molybdenum disulfide powder in absolute ethanol is 0.5 -10 mg / mL (0.5 mg / mL, 1.0 mg / mL, 2.0 mg / mL, 3.0 mg / mL, 4.0 mg / mL, 5.0 mg / mL, 6.0 mg / mL, 7.0 mg / mL, 8.0 mg can be selected / mL, 9.0mg / mL, 10mg / mL); add sodium hydroxide to the solution, the amount of sodium hydroxide added is 0.5-3mg / mL (0.5 mg / mL, 1.0 mg / mL, 1.5 mg / mL can be selected , 2.0 mg / mL, 2.5 mg / mL, 3.0 mg / mL), the mixed solution is obtained after ultrasonic mixing;
[0026] (2) Transfer the mixed solution described in step (1) to the reaction kettle, seal, and react in an oven at 100-200°C (100°C, 120°C, 140°C, 160°C, 180°C, 200°C can be selected) -24 h (3 h, 6 h, 9 h, 12 h, 15 h, 18 h, 21 h, 24 h can be selected), cool to room temperature naturally, and collect the filtrate after filtration;
...
Embodiment 1
[0030] Disperse 30 mg of molybdenum disulfide powder in 30 mL of absolute ethanol, add 45 mg of sodium hydroxide, mix ultrasonically for 1 min, transfer the mixed solution to the reactor, heat up to 180°C for 12 h, and cool to room temperature naturally. The product was separated by filtration with a 0.22μm microporous filter membrane to obtain a yellow solution. The resulting solution was transferred to a dialysis bag with a molecular weight cut-off of 1000 D for dialysis to neutrality to remove impurities and small molecules. After freeze-drying at -40°C, disulfide was obtained. Molybdenum quantum dots.
[0031] figure 1 And substantive examination reference figure 1 This is a picture of the aqueous solution of molybdenum disulfide quantum dots prepared in Example 1 under sunlight and ultraviolet light. Reference by substantive examination figure 1 It can be seen that the molybdenum disulfide quantum dots obtained in this example show strong blue fluorescence under 365nm ultrav...
Embodiment 2
[0033] Disperse 60 mg of molybdenum disulfide powder in 30 mL of absolute ethanol, add 30 mg of sodium hydroxide, mix ultrasonically for 1 min, transfer the mixed solution to the reactor, raise the temperature to 200°C for 6 h, and cool to room temperature naturally. The product was separated by filtration with a 0.22 μm microporous filter membrane to obtain a yellow solution. The resulting solution was transferred to a dialysis bag with a molecular weight cut-off of 1000 D for dialysis to neutrality to remove impurities and small molecules. After freeze-drying at -40°C, disulfide was obtained. Molybdenum quantum dots.
PUM
| Property | Measurement | Unit |
|---|---|---|
| size | aaaaa | aaaaa |
| lattice spacing | aaaaa | aaaaa |
| quality score | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More