Fig. 2

Spectroelectrochemistry of PT in the presence of halides. a Oxidation at 2.0 V vs. SCE for 170 s in 0.1 M KF/MeCN with PEG (Mn = 200) as an additive. b Oxidation at 0.8 V vs. SCE for 15 s in 0.1 M Et4NBr/MeCN. c Oxidation at 0.8 V vs. SCE for 55 s in 0.1 M Et4NCl/MeCN. d Reduction of PT-Cl2 at –0.4 V vs. SCE for 70 s