Ion Transfer Voltammetry by a Simple Two Polarized Interfaces Setup

摘要

Cyclic voltammetry and square wave voltammetry havenbeen used to investigate the transfer of highly hydrophilicnions, including anions and cations, by a simple twonpolarized interfaces setup. The expression of apparentnhalf-wave potential has been established detailedly bynvirtue of theory of sampled-current voltammetry involvingnsemi-infinite linear diffusion, which indicates that thenproperty of coupled ion transfer reaction has an effect onnthe position of the voltammogram on the potential scale.nSince the data obtained agree well with literature values,nit seems convincing to determine the transfer energies ofnthose highly hydrophlic ions which are very important andnhave not been reported yet. Then it has been demonstratednas a novel way in combination with sensitive andnfast square wave voltammetry for determining the transfernGibbs energy of complex ions such as miscellaneousninorganic ions.