Nanoarchitectured metal-organic framework/polypyrrole hybrids for brackish water desalination using capacitive deionization

Ziming Wang, Xingtao Xu, Jeonghun Kim, Victor Malgras, Ran Mo, Chenglong Li, Yuzhu Lin, Haibo Tan, Jing Tang, Likun Pan, Yoshio Bando, Tao Yang, Yusuke Yamauchi

Research output: Contribution to journalArticlepeer-review

224 Citations (Scopus)

Abstract

New families of materials that may potentially replace dominant carbon electrodes have emerged as a major research hotspot in the field of capacitive deionization (CDI). Here, we report a metal-organic framework (MOF)/polypyrrole (PPy) hybrid, in which conductive PPy nanotubes that are running through each MOF particle have the potential to increase the overall bulk electrical conductivity, thus promoting such a system as a good CDI electrode material. Consequently, the MOF/PPy hybrid shows a high desalination capacity of 11.34 mg g-1, which is amongst those of state-of-the-art CDI electrodes. Moreover, the MOF/PPy hybrid also shows a superior desalination performance for brackish water and good cycling stability, far exceeding typical carbon-based benchmarks. This is the first example of CDI electrodes derived from direct MOF-based materials, highlighting the potential of these hybrid systems as promising materials beyond traditional carbon electrodes.

Original languageEnglish
Pages (from-to)1433-1437
Number of pages5
JournalMaterials Horizons
Volume6
Issue number7
DOIs
Publication statusPublished - 2019 Aug

Bibliographical note

Publisher Copyright:
© The Royal Society of Chemistry.

All Science Journal Classification (ASJC) codes

  • General Materials Science
  • Mechanics of Materials
  • Process Chemistry and Technology
  • Electrical and Electronic Engineering

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