Wei Zhang, Hainan Luo, Fengli Li
Oct 1, 2021
Citations
0
Influential Citations
0
Citations
Journal
ChemistryOpen
Abstract
Abstract The electro‐oxidation of formamidine disulfide, an important sulfur‐containing compound, was simultaneously investigated with on‐line high‐performance liquid chromatography and cyclic voltammetry. Using a home‐made microporous sampler located at the electrode interface, the solution on the electrode surface was in situ sampled and analyzed. The electrochemical scanning was synchronously performed, which allowed the electro‐oxidation products to be detected at a given potential. The main products on the surface of platinum electrode were found to be thiourea, formamidine sulfinic acid, cyanamide, and elemental sulfur. Forced convection arising from the sampling played an important role in the electrochemical oxidation. The extraction of electrode surface solution promoted the renewal of reactant and its intermediates, which induced the change of cyclic voltammetry curve. The forced convection also contributed to the redox peak current of the species on the cyclic voltammetry curves through the change of concentration of reactant and its intermediates. This technique can help to explore the reaction mechanism of complex electrochemical reactions.