Electrochemical experiments; cyclic voltammetry (CV), linear sweep voltammetry (LSV), potentiodynamic polarization test, chronoamperometry, and electrochemical impedance spectroscopy (EIS) were performed using a three-electrode cell including CelloZIFPaper (1×2 cm 2 ) as working electrode, a platinum mesh as a counter electrode, and Ag/AgCl electrode as a reference electrode. The measurements were performed in a Na2SO4 solution (0.1 M). Solutions of each metal ion (0.1 M) were dropwise applied onto the CelloZIFPaper in volumes of 0.1, 0.2, 0.3, 0.4, 0.5, 1, 2, and 3 mL. CV voltammograms were recorded at a potential scan rate of 50 mV/s from +0.6 to +0.2 V vs. Ag/AgCl. The EIS spectra were recorded at a potential of 0.2 V vs. Ag/AgCl in the frequency ranges from 100 kHz to 0.01 Hz with an amplitude perturbation potential of 10 mV.