玻碳电极在使用前需要分别用粒径为1.0，0.3和0.05 μm的Al2

Glassy carbon electrode before use were carefully polished with a particle diameter of 1.0, 0.3 and 0.05 μm of Al2O3 slurry, then were placed in ethanol, ultrasonic cleaning in ultrapure water for several minutes, until the surface of the electrode presented a mirror. To verify eligibility polished electrode, the electrodes need to be inserted into the [Fe (CN) 6] 3- / 4- solution (0.1 mol • L-1 KCl solution) in a cyclic voltammetry test. Glassy carbon electrode, a silver / silver chloride electrode, a platinum plate electrodes are a working electrode, a reference electrode, an auxiliary electrode. Potential range: -0.2V ~ +0.8 V, scan rate: 100 mV • s-1. Theoretical redox peak potential difference of 60 mV, about 80 mV potential difference it that usually qualified cleaning electrode

The glass carbon electrode needs to be carefully polished with Al2O3 powder with particle sizes of 1.0, 0.3 and 0.05 m respectively before use, and then placed in ethanol, ultrapure water ultrasonic cleaning for several minutes, until the electrode surface is mirrored. In order to verify that the electrode is polished, the electrode is inserted into the "Fe(CN)63-/4-solution (containing 0.1 mol-L-1 KCl solution) for a circulating volta scan test. The glass carbon electrode, silver/silver chloride electrode and platinum electrode are the working electrode, the reference electrode and the auxiliary electrode respectively. Potential range: -0.2V to .8 V, sweep speed: 100 mV-s-1. The theoretical potential difference of the redox peak is 60 mV, and the potential difference is usually about 80 mV.

Before use, the glassy carbon electrode needs to be polished carefully with Al2O3 slurry with particle size of 1.0, 0.3 and 0.05 μ m respectively, and then placed in ethanol and ultra pure water for ultrasonic cleaning for several minutes, until the electrode surface presents a mirror surface. In order to verify whether the electrode is polished properly, it is necessary to insert the electrode into [Fe (CN) 6] 3 - / 4-solution (containing 0.1 mol · L-1 KCl solution) for cyclic voltammetric scanning test. Glassy carbon electrode, silver / silver chloride electrode and platinum electrode are working electrode, reference electrode and auxiliary electrode respectively. Potential range: - 0.2V ~ + 0.8V, sweep speed: 100 mV · s-1. The theoretical potential difference of the redox peak is 60 mV. Generally, the electrode cleaning is qualified when the potential difference is about 80 mV