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Preparative Electrosynthesis of Strong Oxidizers at Boron‐Doped Diamond Electrode in Anhydrous HF
Author(s) -
Połczyński Piotr,
Jurczakowski Rafał,
Grzelak Adam,
Goreshnik Evgeny,
Mazej Zoran,
Grochala Wojciech
Publication year - 2019
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201806274
Subject(s) - electrosynthesis , anhydrous , dielectric spectroscopy , electrode , inorganic chemistry , electrochemistry , fluoride , diamond , boron , hydrogen fluoride , materials science , electrolyte , fluorine , reversible hydrogen electrode , chemistry , chemical engineering , working electrode , organic chemistry , metallurgy , engineering
The use of the boron‐doped diamond electrode as a sufficiently stable electrode for electrochemical measurements/synthesis in liquid anhydrous hydrogen fluoride medium is reported. Electrooxidation of silver(I) has been studied in this solvent by using classical transient electrochemical methods and impedance spectroscopy. It has been found that faradaic currents related to silver(I) oxidation and the fluorine evolution reaction are reasonably separated at the potential scale, which allows efficient electrosynthesis of Ag II F 2 , a powerful oxidizer. Impedance spectroscopy measurements provide insight into complex mechanism of AgF 2 formation. The procedure for electrosynthesis is provided for the first time in both galvanostatic and potentiostatic condition.