Study on the performance of carbon dots modified hydrogels in heavy metal ions adsorption

Abstract

The protection of the environment is becoming increasingly important at a time when heavy metal ion pollution is becoming more and more serious. Many treatment methods have been developed, among which the adsorption method has attracted much attention because of its convenient and green features. In recent years, hydrogel has become the focus of research as the key material of adsorption method, and researchers have developed different fluorescent-responsive hydrogels, but most of them exist the problems of poor fluorescence signal, complex preparation, and poor compatibility between materials. In this thesis, blue carbon dots modified hydrogels (BCDs-Gel) were prepared with the aim of improving those problems, and their structural analysis and basic characterization were carried out. The results show that the prepared BCDs-Gel has good adsorption and detection ability for Cr2O72- and has a wide application in the field of heavy metal wastewater treatment.