Preparation method of fluorescent carbon dots, antibacterial material and method for inhibiting gram bacteria

The invention discloses a preparation method of fluorescent carbon dots, an antibacterial material and a method for inhibiting gram bacteria, and solves the technical problems of tedious preparation process, low stability, high cost, high toxicity and poor antibacterial property of an antibacterial material in the prior art. The preparation method of the fluorescent carbon dots comprises the following steps: carrying out hydrothermal reaction on an aqueous solution containing tannic acid and thioacetamide to generate a solid-liquid mixture containing the fluorescent carbon dots. The antibacterial material comprises the fluorescent carbon dots prepared by the preparation method. The method for inhibiting gram bacteria comprises the following steps: obtaining the fluorescent carbon dots prepared by the preparation method or the antibacterial material; the fluorescent carbon dots are added into a bacterial liquid needing to inhibit gram bacteria. 本发明公开了荧光碳点的制备方法、抑菌材料以及抑制革兰氏菌的方法，解决了现有技术中抗菌材料的制备过程繁琐，稳定性低，成本高，毒性高、抗