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Scalable and highly selective graphene-based ion-exchange membranes with tunable permselectivity

Engineering and Technology

Scalable and highly selective graphene-based ion-exchange membranes with tunable permselectivity

A. Aixalà-perelló, A. Pedico, et al.

This innovative research delves into the scalable production of graphene oxide membranes as ion-exchange membranes, showcasing remarkable cation selectivity and low ionic resistance. Conducted by a team of experts, including Anna Aixalà-Perelló and Alessandro Pedico, the study highlights the role of UV-light reduction as a green method and the benefits of binder integration for enhanced mechanical properties.

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Playback language: English
Abstract
This work explores the scalable production of graphene oxide (GO) membranes as ion-exchange membranes with tunable permselectivity. The study investigates the impact of membrane thickness, UV-light reduction, binder addition, and flake size on ion selectivity and ionic resistance. Results demonstrate high cation selectivity (up to 96%), low ionic resistance (4.6 Ω cm²), and improved mechanical properties through the use of binders. UV-light irradiation is presented as an effective green reduction method.
Publisher
npj 2D Materials and Applications
Published On
Jul 03, 2023
Authors
Anna Aixalà-Perelló, Alessandro Pedico, Marco Laurenti, Enrica Fontananova, Sergio Bocchini, Ivan Vito Ferrari, Andrea Lamberti
Tags
graphene oxide
ion-exchange membranes
permselectivity
catalysis
low ionic resistance
UV-light reduction
mechanical properties

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