Slow-release carbon dot non-woven fabric as well as preparation method and application thereof

The invention belongs to the field of sewage treatment, and provides a slow-release carbon dot non-woven fabric as well as a preparation method and application thereof. The preparation method of the slow-release carbon dot non-woven fabric comprises the following steps: mixing citric acid and diethylenetriamine according to a certain mass ratio, carrying out microwave digestion, carrying out dialysis purification, and drying to obtain aminated carbon dots. The carboxyl modified non-woven fabric is prepared by introducing carboxyl into a non-woven fabric made of a polypropylene material by utilizing an ultraviolet grafting reaction. Finally, the aminated carbon dots and the carboxyl modified non-woven fabric are subjected to an amidation reaction according to a certain mass ratio, and the slow-release carbon dot non-woven fabric is prepared. The slow-release carbon dot non-woven fabric can slowly release carbon dots, reduces the loss of free carbon dots in the actual use process, can be used as an electron shu