Algae-based carbon quantum dot and preparation method thereof
A technology of algae-based carbon quantum and microalgae, which is applied in chemical instruments and methods, pharmaceutical formulas, preparations for in vivo experiments, etc., and can solve problems such as inapplicability to industrial production, increased preparation costs, and low reaction efficiency of hydrothermal methods , to achieve the effect of not easy to corrode equipment, increase productivity, and high yield
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[0030] The embodiments of the present application provide a preparation method of algae-based carbon quantum dots, such as figure 1 shown, including the following steps:
[0031] S1, microalgae, alcohol solvent are added in the reactor, obtain mixture by alcohol thermal reaction;
[0032] S2, the mixture is centrifuged, and the upper layer liquid is collected;
[0033] S3, the upper layer liquid is separated by rotary evaporation to obtain alcohol phase carbon quantum dots and oil phase carbon quantum dots.
[0034] It should be noted that, in the preparation method of the algae-based carbon quantum dots of the present application, a mixture is obtained by performing an alcohol thermal reaction between microalgae and an alcohol solvent, the mixture is centrifuged, the centrifuged upper layer liquid is collected, and the centrifuged lower layer solid is used as a secondary The product is biocoke; the upper layer liquid is subjected to rotary evaporation to separate the alcoho...
Embodiment 1
[0049] The embodiment of the present application provides a preparation method of algae-based carbon quantum dots, comprising the following steps:
[0050] S1, 12g of Chlorella pyrenoidosa and 200g of absolute ethanol are added to the reactor, the reactor is closed, the inlet valve of the reactor is opened, argon is introduced, and the air in the reactor is replaced, and the reactor is heated and heated to 200 ℃ ℃, under stirring at 200r / min, the mixture was obtained by heating with alcohol for 2h;
[0051] S2, open the reaction kettle, pour the mixture into the centrifuge tube, and centrifuge at 4500rpm for 10min; the bottom solid after centrifugation is dried at 200°C for 24h as by-product biocoke;
[0052] S3. The centrifuged upper layer liquid is subjected to rotary evaporation to separate the alcohol phase and the oil phase under the conditions of vacuum and 30° C. The obtained colorless liquid is the alcohol phase carbon quantum dots, and the black viscous solid is the o...
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