najoNanosystems: Physics, Chemistry, MathematicsНаносистемы: физика, химия, математика2220-80542305-7971Университет ИТМО10.17586/2220-8054-2021-12-4-512-519najo-503Research ArticleCHEMISTRY AND MATERIALS SCIENCEХИМИЯ И НАУКА О МАТЕРИАЛАХProperties of Prussian Blue filled membrane mini-reactor in Cs(I) adsorption processesСвойства мембранного мини-реактора, наполненного берлинской лазурью, в процессах адсорбции Cs(I)IoshinA.IoshinA.

91, Pervomaiskaya str., Ekaterinburg, 620990.

PolyakovE.PolyakovE.

91, Pervomaiskaya str., Ekaterinburg, 620990.

polyakov@ihim.uran.ruVolkovI.VolkovI.

91, Pervomaiskaya str., Ekaterinburg, 620990.

DenisovE.DenisovE.

28, Mira str., Ekaterinburg, 620002.

Institute of Solid State ChemistryRussian FederationUral Federal University named after the first President of Russia B.N. Yeltzin, Physical-technical InstituteRussian Federation202104082025124512519Copyright © Ioshin A., Polyakov E., Volkov I., Denisov E., 20252025Ioshin A., Polyakov E., Volkov I., Denisov E.Ioshin A., Polyakov E., Volkov I., Denisov E.This work is licensed under a Creative Commons Attribution 4.0 License.https://nanojournal.ifmo.ru/jour/article/view/503

We present the results of investigation of Cs(I) ion mass-transfer from outer solution into the inner part of membrane mini-reactor (MR), which is a centimeter-sized hermetically sealed pocket made of polyethylene terephthalate track membrane and filled with Prussian Blue (PB) colloidal solution. The mean size of colloidal particles was 74 ± 20 nm (98.4%) and ξ-potential was −(33 ± 6) mV. The pore diameter of the track membrane in the experiments varied from 50 to 50000 nm. It was found that the construction and properties of PB filled MR allow one to realize an extremely high distribution coefficient of (1.50±0.05)·106 ml/g with respect to Cs(I), which is characteristic of colloid-sized PB. Adsorption is a diffusion-controlled process localized in the pores of TM, which can be fulfilled in solution without agitation.

Представлены результаты исследования массопереноса ионов Cs(I) из внешнего раствора во внутреннюю часть мембранного мини-реактора (МР), представляющего собой герметичный карман сантиметрового размера из трековой мембраны из полиэтилентерефталата, заполненный коллоидным раствором берлинской лазури (БЛ). Средний размер коллоидных частиц составил 74 ± 20 нм (98.4%), ξ-потенциал – (33 ± 6) мВ. Диаметр пор трековой мембраны в опытах варьировался от 50 до 50000 нм. Установлено, что конструкция и свойства МР, наполненных БЛ, позволяют реализовать чрезвычайно высокий коэффициент распределения (1.50±0.05)·106 мл/г по Cs(I), характерный для БЛ коллоидных размеров. Адсорбция представляет собой диффузионно-контролируемый процесс, локализованный в порах ТМ, который может осуществляться в растворе без перемешивания.

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The authors declare that there are no conflicts of interest present.