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Updated: Jul 7, 2026

Merging Ion Concentration Polarization between Juxtaposed Ion Exchange Membranes to Block the Propagation of the Polarization Zone
Published on: February 23, 2017
Permeation regulation of charged species by the component change of polyion complex membranes
Soichi Yabuki1, Shin-Ichiro Fujii, Fumio Mizutani
1Tsukuba Center, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Higashi, Tsukuba, Ibaraki 305-8566, Japan. s.yabuki@aist.go.jp
Abstract:
Three kinds of polyion complex membranes were prepared on a glassy carbon electrode: polycation (poly-L-lysine)-rich membrane, polyanion (DNA)-rich membrane, and equivalent membrane. The permeation of electroactive species (e.g., hydrogen peroxide, L-ascorbate, urate, dopamine) through the membrane was measured by the oxidation current of species at base electrode. Permeation of the anionic species can be depressed through the anion-rich membrane, and permeation of the cation can also be regulated through the cation-rich membrane. It is obvious that the charge exclusion can be controlled by changing the component ratio of polycation and polyanion during preparation.
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