Activity changes of glassy carbon electrodes caused by their exposure to OH• radicals

GC electrodes were exposed to Fenton solutions. The surface changes produced by the OH
• radicals of these solution were inspected using SEM, XPS, Raman spectroscopy and electrochemistry. The OH
• radicals caused erosion and roughening of the surface, selective oxidation and dissolution of sp2 carbon, and reduction of the number of nucleation sites for silver deposition.