Fig. 4: EPR spectra of DMPO-SO3‒ and UV-Vis spectra of I3•‒ and Fe(CN)63‒.
From: Spontaneous formation of reactive redox radical species at the interface of gas diffusion electrode
a EPR spectra of DMPO-SO3– with 0.1 M K2SO3 and UV-Vis absorbance with b 0.1 M I– and c 0.1 M Fe(CN)64– and Fe(CN)63– as controls upon feeding gas. [O] represents oxidative H2O•+ and/or •OH radical species.
