Ion transfer voltammetry by a simple two polarized interfaces setup.
Cyclic voltammetry and square wave voltammetry have been used to investigate the transfer of highly hydrophilic ions, including anions and cations, by a simple two polarized interfaces setup. The expression of apparent half-wave potential has been established detailedly by virtue of theory of sampled-current voltammetry involving semi-infinite linear diffusion, which indicates that the property of coupled ion transfer reaction has an effect on the position of the voltammogram on the potential scale. Since the data obtained agree well with literature values, it seems convincing to determine the transfer energies of those highly hydrophilic ions which are very important and have not been reported yet. Then it has been demonstrated as a novel way in combination with sensitive and fast square wave voltammetry for determining the transfer Gibbs energy of complex ions such as miscellaneous inorganic ions.
Zhou
Min
M
Engineering Laboratory for Modern Analytical Techniques, c/o State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry and Graduate University of the Chinese Academy of Sciences, Chinese Academy of Sciences, Changchun 130022, P. R. China.
Gan
Shiyu
S
Zhong
Lijie
L
Su
Bin
B
Niu
Li
L
D004563:Electrochemistry / Q000379:methods*; D004566:Electrodes; D057927:Hydrophobic and Hydrophilic Interactions; D007477:Ions / Q000737:chemistry; D010984:Platinum / Q000737:chemistry; D013499:Surface Properties; D014867:Water / Q000737:chemistry
D007477:Ions; D014867:Water; D010984:Platinum