Near-full-spectrum fluorescent nanocarbon dots and preparation method thereof
A fluorescent nanometer and full-spectrum technology, applied in the field of carbon nanoluminescent materials, can solve the problems of no synthetic fluorescent carbon dots, etc., and achieve the effects of easy industrial production, cheap and easy-to-obtain sources, and low synthesis cost
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[0030] Example 1
[0031] Take monoethanolamine and citric acid in a molar ratio of 1:0.05, add deionized water to dissolve, stir evenly, transfer to a hydrothermal kettle, and perform hydrothermal reaction at 160 ℃-250 ℃ for 5h-24h, after the reaction is completed, Allow the hydrothermal kettle to naturally cool to room temperature, and a blue solution can be obtained, which is an aqueous solution of carbon dots. Spot most of the water in the aqueous solution, and the final solution is the carbon spot solution. Take the excitation wavelength of 395 nm as an example to test the spectrum.
Example Embodiment
[0032] Example 2
[0033] Take monoethanolamine and citric acid with a molar ratio of 1:0.20, add deionization to dissolve, stir evenly, transfer to a hydrothermal kettle, and conduct hydrothermal reaction at 160 ℃-250 ℃ for 5h-24h, after the reaction is completed, make The hydrothermal kettle is naturally cooled to room temperature, and a green solution can be obtained, which is an aqueous solution of carbon dots. Most of the water in the final solution is the carbon dot solution. Take the excitation wavelength of 395nm as an example to test the spectrum.
Example Embodiment
[0034] Example 3
[0035] Take monoethanolamine and citric acid in a molar ratio of 1:0.18 or 1:0.23, add deionized water to dissolve, stir evenly, transfer to a hydrothermal kettle, and perform hydrothermal reaction at 160℃-250℃ for 5h-24h, wait for After the reaction is completed, the hydrothermal kettle is naturally cooled to room temperature, and a green solution can be obtained, which is an aqueous solution of carbon dots. Most of the water in the carbon dots aqueous solution is removed by drying, and the final solution is the carbon dots solution. Take the excitation wavelength of 395 nm as an example to test the spectrum.
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