Preparation method of hydrogen peroxide electrochemical sensor based on platinum wire microelectrode

The invention relates to the technical field of electrochemical sensors, in particular to a preparation method of a hydrogen peroxide electrochemical sensor based on a platinum wire microelectrode. The method comprises the following steps: S1, polishing a platinum wire microelectrode on chamois leather in an 8-shaped loop; s2, cleaning the polished platinum wire microelectrode, and blow-drying the platinum wire microelectrode with N2 airflow; s3, the platinum wire microelectrode obtained in the step S2 is soaked in electrodeposition liquid for three minutes, and then a CV technology is adopted for scanning a certain number of turns to obtain PtPd/ME; and S4, cleaning the PtPd/ME obtained in the step S3 by using ultrapure water, and then drying at room temperature. According to the preparation method of the hydrogen peroxide electrochemical sensor based on the platinum wire microelectrode, H2O2 can be detected with higher performance through the prepared electrochemical sensor, and meanwhile, due to the fact t