Platinum (II)-doped graphitic carbon nitride with enhanced peroxidase-like activity for detection of glucose and H2O2
Guo Zeng1, Minghui Duan2, Yifan Xu3
1School of resource environment and safety engineering, University of South China, HengYang 421000, Hunan, China; Hengyang Medical College, University of South China, HengYang 421000, Hunan, China.
Abstract:
A platinum (II)-doped graphitic carbon nitride (Pt2+@g-C3N4) nanozyme was prepared in this work. Compared to g-C3N4, Pt2+@g-C3N4 shows enhanced peroxidase-like activity. According to DFT calculations and ESR measurements, the Pt on the surface of g-C3N4 accelerates the decomposition of H2O2 into OH and consequently accelerates TMB oxidation. Furthermore, as a proof of concept, the obtained Pt2+2.30@g-C3N4 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 Pt2+2.30@g-C3N4 show that this method is reliable and feasible for the detection of glucose.
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