Three-Dimensional Nanoarchitecture of Carbon Nanotube-Interwoven Metal–Organic Frameworks for Capacitive Deionization of Saline Water

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The exploration of a new family of materials with superior performance for capacitive deionization (CDI) compared to commercial activated carbons is of significant interest. In this work, a three-dimensional (3D) nanoarchitecture composed of metal–organic frameworks (MOFs) interwoven by carbon nanotubes (CNTs) has been synthesized by utilizing CNTs to bridge the neighboring MOF nanocrystals. The resulting MOF/CNT hybrid not only shows improved electrical conductivity and 3D hierarchical structure but also retains the high porosity of MOFs. Consequently, the MOF/CNT hybrid exhibits a high desalination capacity of 16.90 mg g –1, highlighting the potential of noncarbonized MOF-based materials as CDI electrodes.