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Hydrogen Evolution: Electrochemical Pretreatment for Voltammetric Analysis with Gold Electrodes
Author(s) -
LamasArdisana Pedro José,
FanjulBolado Pablo,
CostaGarcía Agustín
Publication year - 2015
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.201400393
Subject(s) - electrode , electrochemistry , cyclic voltammetry , cathodic protection , redox , electrolyte , materials science , inorganic chemistry , voltammetry , hydrogen , working electrode , chemistry , organic chemistry
A pretreatment for gold electrodes is presented in this work. The improvement of the voltammetric responses for gold surfaces is achieved applying an adequate cathodic potential in acidic media which results on vigorous evolution of gas hydrogen at the interface between electrode and electrolyte. The effectiveness of this procedure is evidenced for gold wire electrodes by cyclic voltammetry in several redox systems. The pretreatment is also compared with other activation methods for gold electrodes in electroanalytical and electrochemical terms.