Open AccessElectrooxidation of Formamidine Disulfide Simultaneously Investigated by On‐Line High Performance Liquid Chromatography and Cyclic Voltammetry
Author(s) -
Zhang Wei,
Luo Hainan,
Li Fengli,
Zhang Baoying,
Zhao Yuyan,
Feng Na,
Liu Yang
Publication year - 2021
Publication title -
chemistryopen
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.644
H-Index - 29
ISSN - 2191-1363
DOI - 10.1002/open.202100197
Subject(s) - cyclic voltammetry , chemistry , electrochemistry , electrode , inorganic chemistry , platinum , microporous material , redox , voltammetry , organic chemistry , catalysis
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.