Long-range selective transport of anions and cations in graphene oxide membranes, causing selective crystallization on the macroscale

Vanesa Quintano; Alessandro Kovtun; Fabio Biscarini; Fabiola Liscio; Andrea Liscio; Vincenzo Palermo

doi:10.1039/D0NA00807A

Long-range selective transport of anions and cations in graphene oxide membranes, causing selective crystallization on the macroscale†

Vanesa Quintano,

^a Alessandro Kovtun,

^a Fabio Biscarini,

^b Fabiola Liscio,

^c Andrea Liscio

^ad and Vincenzo Palermo

*^ae

Author affiliations

* Corresponding authors

^a Consiglio Nazionale delle Ricerche, Institute for Organic Synthesis and Photoreactivity, (CNR-ISOF), Via Gobetti 101, I-40129 Bologna, Italy
E-mail: [email protected]

^b Dipartimento di Scienze della Vita, Via Giuseppe Campi 103, I-41125 Modena, Italy

^c Consiglio Nazionale delle Ricerche, Istituto per la Microelettronica e Microsistemi, (CNR-IMM) – Sezione di Bologna, Via Gobetti 101, I-40129 Bologna, Italy

^d Consiglio Nazionale delle Ricerche, Istituto per la Microelettronica e Microsistemi, (CNR-IMM) – Sezione di Roma, Via del fosso del cavaliere 100, I-00133 Roma, Italy

^e Chalmers University of Technology, Department of Industrial and Materials Science, Hörsalvägen 7, S-41296 Gothenburg, Sweden

Abstract

Monoatomic nanosheets can form 2-dimensional channels with tunable chemical properties, for ion storage and filtering applications. Here, we demonstrate transport of K⁺, Na⁺, and Li⁺ cations and F⁻ and Cl⁻ anions on the centimeter scale in graphene oxide membranes (GOMs), triggered by an electric bias. Besides ion transport, the GOM channels foster also the aggregation of the selected ions in salt crystals, whose composition is not the same as that of the pristine salt present in solution, highlighting the difference between the chemical environment in the 2D channels and in bulk solutions.

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DOI: https://doi.org/10.1039/D0NA00807A
Article type: Communication
Submitted: 30 Sep 2020
Accepted: 30 Nov 2020
First published: 08 Dec 2020
This article is Open Access

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Nanoscale Adv., 2021,3, 353-358

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Long-range selective transport of anions and cations in graphene oxide membranes, causing selective crystallization on the macroscale

V. Quintano, A. Kovtun, F. Biscarini, F. Liscio, A. Liscio and V. Palermo, Nanoscale Adv., 2021, 3, 353 DOI: 10.1039/D0NA00807A

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

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Long-range selective transport of anions and cations in graphene oxide membranes, causing selective crystallization on the macroscale†

Abstract

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Long-range selective transport of anions and cations in graphene oxide membranes, causing selective crystallization on the macroscale

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