Molecular Structure Effects on Ionic Diode Performance in Desalination: Ultrahigh Rectification in Butylated Intrinsically Microporous Polyamine (PIM-EA-TB)

Zhongkai Li; Mariolino Carta; Neil B. McKeown; Raphael E. Agbenyeke; Jean Charles Eloi; David J. Fermin; Omotayo A. Arotiba; Frank Marken

doi:10.1002/celc.202300807

Molecular Structure Effects on Ionic Diode Performance in Desalination: Ultrahigh Rectification in Butylated Intrinsically Microporous Polyamine (PIM-EA-TB)

Zhongkai Li
, Mariolino Carta
, Neil B. McKeown
, Raphael E. Agbenyeke
, Jean Charles Eloi
, David J. Fermin
, Omotayo A. Arotiba
, Frank Marken

Chemical Sciences

University of Bath, Department of Chemistry
Swansea University
EaStCHEM Edinburgh
University of Bristol
University of Johannesburg

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

Ionic diodes are components in ionic circuits for AC-electricity driven desalination and ion extraction processes. Independent of the ionic diode type/mechanism, achieving ionic current rectification at high ionic strengths is challenging but important, for example in seawater desalination and treatment of brine. Here, the butylation of a molecularly rigid (glassy) polymer of intrinsic microporosity (PIM-EA-TB) is shown to give anionic diodes with ultrahigh rectification effects (associated with interfacial resistivity) even in high ionic strength aqueous 2 M NaCl solution. The effect is rationalised based on polymer structure affecting ion transport.

Original language	English
Article number	e202300807
Journal	ChemElectroChem
Volume	11
Issue number	9
DOIs	https://doi.org/10.1002/celc.202300807
Publication status	Published - 2 May 2024

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 6 Clean Water and Sanitation

Keywords

brine
electroosmosis
ionic semiconductor
iontronics
seawater
voltammetry

ASJC Scopus subject areas

Catalysis
Electrochemistry

Access to Document

10.1002/celc.202300807

Cite this

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title = "Molecular Structure Effects on Ionic Diode Performance in Desalination: Ultrahigh Rectification in Butylated Intrinsically Microporous Polyamine (PIM-EA-TB)",

abstract = "Ionic diodes are components in ionic circuits for AC-electricity driven desalination and ion extraction processes. Independent of the ionic diode type/mechanism, achieving ionic current rectification at high ionic strengths is challenging but important, for example in seawater desalination and treatment of brine. Here, the butylation of a molecularly rigid (glassy) polymer of intrinsic microporosity (PIM-EA-TB) is shown to give anionic diodes with ultrahigh rectification effects (associated with interfacial resistivity) even in high ionic strength aqueous 2 M NaCl solution. The effect is rationalised based on polymer structure affecting ion transport.",

keywords = "brine, electroosmosis, ionic semiconductor, iontronics, seawater, voltammetry",

author = "Zhongkai Li and Mariolino Carta and McKeown, \{Neil B.\} and Agbenyeke, \{Raphael E.\} and Eloi, \{Jean Charles\} and Fermin, \{David J.\} and Arotiba, \{Omotayo A.\} and Frank Marken",

note = "Publisher Copyright: {\textcopyright} 2024 The Authors. ChemElectroChem published by Wiley-VCH GmbH.",

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month = may,

day = "2",

doi = "10.1002/celc.202300807",

language = "English",

volume = "11",

journal = "ChemElectroChem",

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TY - JOUR

T1 - Molecular Structure Effects on Ionic Diode Performance in Desalination

T2 - Ultrahigh Rectification in Butylated Intrinsically Microporous Polyamine (PIM-EA-TB)

AU - Li, Zhongkai

AU - Carta, Mariolino

AU - McKeown, Neil B.

AU - Agbenyeke, Raphael E.

AU - Eloi, Jean Charles

AU - Fermin, David J.

AU - Arotiba, Omotayo A.

AU - Marken, Frank

PY - 2024/5/2

Y1 - 2024/5/2

N2 - Ionic diodes are components in ionic circuits for AC-electricity driven desalination and ion extraction processes. Independent of the ionic diode type/mechanism, achieving ionic current rectification at high ionic strengths is challenging but important, for example in seawater desalination and treatment of brine. Here, the butylation of a molecularly rigid (glassy) polymer of intrinsic microporosity (PIM-EA-TB) is shown to give anionic diodes with ultrahigh rectification effects (associated with interfacial resistivity) even in high ionic strength aqueous 2 M NaCl solution. The effect is rationalised based on polymer structure affecting ion transport.

AB - Ionic diodes are components in ionic circuits for AC-electricity driven desalination and ion extraction processes. Independent of the ionic diode type/mechanism, achieving ionic current rectification at high ionic strengths is challenging but important, for example in seawater desalination and treatment of brine. Here, the butylation of a molecularly rigid (glassy) polymer of intrinsic microporosity (PIM-EA-TB) is shown to give anionic diodes with ultrahigh rectification effects (associated with interfacial resistivity) even in high ionic strength aqueous 2 M NaCl solution. The effect is rationalised based on polymer structure affecting ion transport.

KW - brine

KW - electroosmosis

KW - ionic semiconductor

KW - iontronics

KW - seawater

KW - voltammetry

UR - https://www.scopus.com/pages/publications/85186918547

U2 - 10.1002/celc.202300807

DO - 10.1002/celc.202300807

M3 - Article

AN - SCOPUS:85186918547

SN - 2196-0216

VL - 11

JO - ChemElectroChem

JF - ChemElectroChem

IS - 9

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ER -

Molecular Structure Effects on Ionic Diode Performance in Desalination: Ultrahigh Rectification in Butylated Intrinsically Microporous Polyamine (PIM-EA-TB)

Abstract

UN SDGs

Keywords

ASJC Scopus subject areas

Access to Document

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