Electrochemical Adsorption of Cs⁺ Ions on H-Todorokite Nanorods.

ABSTRACT: In this work, manganese oxide with a 3 × 3 tunnel structure was synthesized. Mg-todorokite was treated with HNO₃ to obtain H-todorokite, which was used as an electrode for adsorption of Cs⁺ from aqueous solution by an electrochemical reaction. H-todorokite was electrochemically reduced to lower oxidation state to enhance its negative charge and simultaneously increase the amount of cations because of the charge compensation. The Cs⁺ adsorption on H-todorokite was completed by a coupled electrochemical reaction (the redox reaction between Mn³⁺ and Mn⁴⁺) and an ion-exchange reaction between Cs⁺ and H⁺ ions. Cyclic voltammetry measurements at different pHs and Cs⁺ concentrations were performed. H-todorokit

SUBMITTER: Zhang H 

PROVIDER: S-EPMC6977079 | biostudies-literature | 2020 Jan

REPOSITORIES: biostudies-literature