Renewable metal nanoparticle electrochemical sensor and preparation method thereof

The invention discloses a renewable metal nanoparticle electrochemical sensor and a preparation method thereof. The sensor mainly comprises a bare glassy carbon electrode, a layer of sulfonated poly(aryle ether ketone) polymer cation exchange thin-layer template precursor and carrier film, and a layer of nickel nanoparticle high electric catalytic activity film. By utilizing the strong matching function and ion exchange effect of a sulfonic acid group on the sulfonated poly(aryle ether ketone) (SPAEK) thin-layer precursor film and transition metal ions, taking a nickel sulfate solution as a deposition solution, and using an in situ electrochemical reduction method, nickel nanoparticles are loaded on a SPAEK thin film modified electrode. Glucose has a significantly enhanced electric catalytic oxidation effect, and the production repeatability of the sensor is high. When the sensor is applied to glucose electrochemical analysis, the sensor has high response sensitivity, and good determination stability and reproducibility, and can be used for accurately and quickly analyzing the content of low concentration glucose.