SYNTHESIS AND ION-EXCHANGE PROPERTIES OF THIN-LAYER Fe(Ⅲ) AND Cu( Ⅱ) FERROCYANIDES

摘要

A method is developed for preparing thin-layer Cu(Ⅱ) and Fe(Ⅲ) ferrocyanides on the surface of polyacrylonitrile fibers and knitted fabric. The Cs~+ ion-exchange properties of the resulting materials are characterized. Measurements of sorption capacity as a function of deposited layer thickness yield S-shaped curves, indicating a zeolite character of Cs~+sorption.~137Cs sorption from tap water by the thin-layer ferrocyanides is studied.