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Induced-Charge Enhancement of the Diffusion Potential in Membranes with Polarizable Nanopores
препринт статьи

Полный текстСтраница в репозитории СФУ
База данных: Архив электронных ресурсов СФУ
Аннотация: When a charged membrane separates two salt solutions of different concentrations, a potential difference appears due to interfacial Donnan equilibrium and the diffusion junction. Here, we report a new mechanism for the generation of a membrane potential in polarizable conductive membranes via an induced surface charge. It results from an electric field generated by the diffusion of ions with different mobilities. For uncharged membranes, this effect strongly enhances the diffusion potential and makes it highly sensitive to the ion mobilities ratio, electrolyte concentration, and pore size. Theoretical predictions on the basis of the space-charge model extended to polarizable nanopores fully agree with experimental measurements in KCl and NaCl aqueous solutions. © 2017 American Physical Society.
Год издания: 2017
Авторы: Ryzhkov, I. I., Lebedev, D. V., Solodovnichenko, V. S., Shiverskiy, A. V., Simunin, M. M.
Источник: Physical Review Letters
Ключевые слова: Membranes, Chlorine compounds, Diffusion, Electric fields, Electrolytes, Nanopores, Pore size, Sodium compounds, Solutions, Институт цветных металлов и материаловедения, Институт космических и информационных технологий, ИЦМиМ, икит, сфу