A phosphorus-doped g-C3N4 nanosheets as an efficient and sensitive fluorescent probe for Fe3+ detection

Abstract The phosphorus-doped carbon nitride nanosheets (P-g-C3N4 nanosheets) were prepared by ultrasonic stripping. Through the performance characterization, it was found that the P-g-C3N4 nanosheets emitted pure blue light with stable performance. Compared with other metal ions, it was found that the quenching reaction between P-g-C3N4 nanosheets and Fe3+ was the strongest. The detection limit of Fe3+ was found to be about 1.63 μM. P-doped g-C3N4 is expected to be an efficient fluorescent probe for Fe3+ detection.