Electrochemical determination of hydrogen peroxide by high proportion of pyridinic nitrogen doped carbon loaded nano-copper sheets

Due to the wide usage of H2O2 in daily products and its adverse effects on organisms, developing effective, simple and sensitive approaches for detecting H2O2 in multiple real cases has always been of concern. In this paper, a pyridinic nitrogen doped carbon loaded nano-copper (N-C@Cu) sheet composite has been successfully prepared and used as an effective electrochemical material for detecting H2O2. The characterization of the fabricated electrode material sensor was performed by transmission electron microscopy (TEM), X-ray spectroscopy (XRD), energy-dispersive spectroscopy (EDS), Fourier-transform infrared (FTIR) spectroscopy, Raman spectroscopy and X-ray photoelectron spectroscopy (XPS). The prepared electrode presented high sensitivity, a wide linear range, excellent repeatability and multi-day detection stability as a result of high content of pyridinic nitrogen in the N-C@Cu/Nafion/GCE. Under the optimized experimental parameters, the detection range was from 4 to 1400 μM and the limit of detection was 2.98 μM (S/N = 3). The N-C@Cu sensor has also been successfully used for detecting H2O2 in environmental water samples and domestic products.