Preparation method of glycyrrhetinic acid doped carbon dots and application of glycyrrhetinic acid doped carbon dots in Fe < 3 + > detection

The invention relates to the technical field of carbon nanomaterials, and discloses a preparation method of glycyrrhetinic acid doped carbon dots and application of the glycyrrhetinic acid doped carbon dots in Fe < 3 + > detection.The preparation method comprises the following steps that S1, glycyrrhetinic acid and Tris hydrochloride are weighed to be mixed with deionized water, and ultrasonic treatment is conducted till the glycyrrhetinic acid and the Tris hydrochloride are completely dissolved; s2, putting a product obtained in the step S1 into a reaction kettle, carrying out hydrothermal reaction at 160-280 DEG C for 6-16 hours, cooling and centrifuging; and S3, filtering the product obtained in the S2 by using a microfiltration membrane, dialyzing by using a dialysis membrane, and freeze-drying to obtain the glycyrrhetinic acid doped carbon dots. The operation steps are simple, the detection process of the prepared glycyrrhetinic acid doped carbon dots is simple, and the glycyrrhetinic acid doped carbon d