Macroscopic preparation method of fluorescent carbon quantum dots
A carbon quantum dot and fluorescence technology, applied in the field of material synthesis, can solve the problem of low conversion efficiency, and achieve the effects of low price, high conversion rate and lower production cost
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Embodiment 1
[0038] Add 40mL of ultrapure water to 1g of rape flower bee pollen, and after ultrasonic treatment for ten minutes, pour it into a reaction kettle made of polytetrafluoroethylene, cover it, put it into the reaction kettle shell, and seal it The reaction kettle was placed in an oven at 180°C, and reacted for 24 hours. Then take it out, let it cool down to room temperature naturally, open the lid and pour out the reaction solution in the reaction kettle, filter through a filter membrane with a pore size of 0.2 μm to remove the black precipitate in the reaction solution, and the obtained dark brown transparent solution is the fluorescent carbon quantum dot solution.
[0039] The fluorescent carbon quantum dots prepared in this embodiment were observed with a transmission electron microscope, and the results can be found in figure 1 , 2 , as can be seen from the figure, this embodiment obtains spherical carbon quantum dots with a relatively uniform particle size and a size of abo...
Embodiment 2
[0041] Add 40mL of ultrapure water to 1g of camellia bee pollen, and after ultrasonic treatment for ten minutes, pour it into a reaction kettle made of polytetrafluoroethylene, cover it, put it into the outer shell of the reaction kettle, seal it and put the reaction The kettle was placed in an oven at 180°C and reacted for 24 hours. Then take it out, let it cool down to room temperature naturally, open the lid and pour out the reaction solution in the reaction kettle, filter through a filter membrane with a pore size of 0.2 μm to remove the black precipitate in the reaction solution, and the obtained dark brown transparent solution is the fluorescent carbon quantum dot solution.
[0042]The fluorescent carbon quantum dots prepared in this embodiment were observed with a transmission electron microscope, and the results can be found in Figure 7 , it can be seen from the figure that spherical carbon quantum dots with a relatively uniform particle size and a size of about 2 nm ...
Embodiment 3
[0044] Add 40mL of ultrapure water to 1g of lotus bee pollen, and after ultrasonic treatment for ten minutes, pour it into a reaction kettle made of polytetrafluoroethylene, cover it, put it into the outer shell of the reaction kettle, seal it and put the reaction The kettle was placed in an oven at 180°C and reacted for 24 hours. Then take it out, let it cool down to room temperature naturally, open the lid and pour out the reaction solution in the reaction kettle, filter through a filter membrane with a pore size of 0.2 μm to remove the black precipitate in the reaction solution, and the obtained dark brown transparent solution is the fluorescent carbon quantum dot solution.
[0045] The fluorescent carbon quantum dots prepared in this embodiment were observed with a transmission electron microscope, and the results can be found in Figure 11 , it can be seen from the figure that spherical carbon quantum dots with a relatively uniform particle size and a size of about 1-2 nm...
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