The formula for calculating the limit of detection (LOD) of an electrochemical sensor is LOD = 3Sb/s, where Sb represents the standard deviation of the blank solution, and s denotes the slope of the calibration curve. The standard deviation of the blank solution is obtained by measuring the current response of the sensor in the absence of analyte or target molecule. The slope of the calibration curve is obtained by plotting the current response of the sensor against the concentration of the analyte or target molecule used for calibration. The LOD is the minimum concentration of the analyte that can be detected by the sensor with a signal-to-noise ratio of at least 3:1.

To calculate the LOD of an electrochemical sensor used for the detection of H2O2, you would need to conduct experiments to measure the standard deviation of the blank solution and obtain the slope of the calibration curve. Once these values are obtained, you can substitute them into the formula to calculate the LOD. If you do not have access to specific values from research papers, you will need to conduct your own experiments to obtain the necessary data for calculation.