Platinum (II)-doped graphitic carbon nitride with enhanced peroxidase-like activity for detection of glucose and H2O2

A platinum (II)-doped graphitic carbon nitride (Pt 2+ @g-C 3 N 4 ) nanozyme was prepared in this work. Compared to g-C 3 N 4 , Pt 2+ @g-C 3 N 4 shows enhanced peroxidase-like activity. According to DFT calculations and ESR measurements, the Pt on the surface of g-C 3 N 4 accelerates the decomposition of H 2 O 2 into OH and consequently accelerates TMB oxidation. Furthermore, as a proof of concept, the obtained Pt 2+ 2.30 @g-C 3 N 4 was applied in the detection of glucose with an LOD of 0.01 mM. The reproducibility and precision tests of the glucose detection method based on Pt 2+ 2.30 @g-C 3 N 4 show that this method is reliable and feasible for the detection of glucose.