LAUSR

Abstract In this work, the reduction and oxidation capacities of organic supporting electrolytes for ferricenium (Fc + ) and ferrocene (Fc) were investigated by micro and nano hybrid electrodes in this work. The Fc + can be produced in situ at the carbon electrode and collected simultaneously at the liquid/liquid (L/L) interface. The experiments were based on the generation/collection (G/C) technique and the redox capability of the supporting electrolytes was defined by the collection efficiency. Five common employed supporting electrolytes in the organic phase (TBADCC, TBATPB, TBATPBCl, TBATPBF and TBATPBF 5 ) were discussed and the experimental results indicated that the reduction power of these supporting electrolytes was weakened successively. The oxidation ability of cations of some supporting electrolytes (TPAsTPBF 5 , TBATPBF 5 and BTPPATPBF 5 ) were also tested using the same methodology, showing that TBA + and BTPPA + have little influence on this system in comparison with oxidation of Fc to Fc + by TPAs + . Besides, the different concentration of supporting electrolyte verse Fc was also studied to further prove the redox effect of supporting electrolytes on Fc + .