Synthesis of New Type ZnO Nanomaterial and Its Application for Electrochemical Detection of p-Nitrophenol

A new type nanomaterial, peanut-like ZnO, was synthesized via hydrothermal method, and SEM and XRD were utilized to characterize and analyze the surface morphology and crystalline lattices of the nanomaterials. The electrochemical performance of the peanut-like ZnO was investigated by cyclic voltammetry, Nyquist and differential pulse voltammetry ulteriorly. The peanut-like ZnO modified electrode displayed excellent conductivity and had a strong electroreduction ability to detect p-nitrophenol, showing a good linear relationship within the concentration ranges of 0.8 - 24 mu mol/L and 32 - 80 mu mol/L, and the detection limits were calculated to be 0.25 mu mol/L(3S/N). The modified electrodes were used to analyze and detect p. nitrophenol in real water samples with the recovery from 95.6% to 103.4%, and gave a satisfactorily result.