Alkali preparation and ions detection of Ti3C2 quantum dots

In this paper, a simple lye etching method is used to directly prepare Ti3C2 quantum dot (QDs) without fluorine containing groups at low lye concentration. The as-prepared Ti3C2 QDs have a stability fluorescent property in whole pH range of 1-14 and different fluorescence response to different types of heavy metal ions. Due to the unique and irreversible fluorescence quenching ability for Cr3+, Ti3C2 QDs can be used to detect Cr3+ with a low detection limit of 30 mM. Along with the high fluorescent selectivity and stability in pH = 1-14, Ti3C2 QDs is a great application prospect as Cr3+ ion detection probes in sewage disposal.

Automated summary

In this study, Ti3C2 quantum dots (QDs) were prepared using a simple lye etching method without fluorine containing groups at low lye concentration. The as-prepared Ti3C2 QDs exhibited stable fluorescence properties in the entire pH range and showed fluorescence response to different heavy metal ions. With its unique and irreversible fluorescence quenching ability, Ti3C2 QDs can be used for low-level detection of Cr3+. Ti3C2 QDs have high selectivity and stability in the pH range of 1-14, making them a promising candidate for Cr3+ ion detection in sewage disposal.