Multichannel detection of persulfate by fluorescent carbon quantum dots derived from one-pot solvothermal reaction

Here we report the multichannel detection of S2O82− by fluorescent carbon quantum dots (CQDs) in aqueous media. The one-pot reaction derived yellow emitting CQDs (Y-CQDs) and red emitting ones (R-CQDs) were used to establish the multichannel detection platform (i.e. fluorescence on–off, colorimetric, and ratio fluorescent/colorimetric) for S2O82− based on their different responses to S2O82−.