Rapid synthesis method for high-quantum-yield fluorescent carbon dots
A technology of fluorescent carbon dots and a synthesis method, applied in the fields of chemistry and nanomaterials science, can solve the problems of unfavorable continuous and large-scale production of fluorescent carbon quantum dots, low carbon quantum yield, non-renewable energy, etc. The effect of high yield and simple operation
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[0027] Example 1
[0028] A method for synthesizing fast and high quantum yield fluorescent carbon dots, comprising the following steps:
[0029] 1) citric acid monohydrate and ethylenediamine are mixed and stirred to obtain a mixed solution;
[0030] 2) The mixed solution of step 1) was placed in a microwave reactor whose model was CEM Discover and reacted, and the temperature was set to 130 °C;
[0031] 3) cooling to obtain a brown liquid product, inject the brown liquid product into a dialysis bag for dialysis, the molecular weight of the dialysis bag is 500Da, collect the liquid in the dialysis bag, carry out rotary evaporation concentration, and freeze-dry the concentrated sample to obtain Fluorescent carbon dots.
[0032] Wherein, the conditions of the rotary evaporation concentration are as follows: the temperature of the rotary evaporator is set to 50° C., and the time of the rotary evaporation is set to be 10 min.
[0033] Wherein, in the step 3), the solution afte...
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