Abstract
Abstract The electrochemical behavior of a Au(111) electrode was investigated in three ionic liquids (ILs) containing trifluoromethylsulfonyl-based anions at temperatures ranging from 20 °C to 100 °C. Gold oxidation, that is, gold etching, occurred at elevated temperatures (≥70 °C) and was found to be dependent on the chemical structure of the ILs. These results allow us to simplify the procedure of gold dissolution in bis(trifluoromethylsulfonyl)amide-based ILs, thereby improving the efficiency of electrochemical etching.
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