Montmorillonite Membranes with Tunable Ion Transport by Controlling Interlayer Spacing
Source abstract
Abstract
Membranes incorporating two-dimensional (2D) materials have shown great potential for water purification and energy storage and conversion applications. Their ordered interlayer galleries can be modified for their tunable chemical and structural properties. Montmorillonite (MMT) is an earth-abundant phyllosilicate mineral that can be exfoliated into 2D flakes and reassembled into membranes. However, the poor water stability and random interlayer spacing of MMT caused by weak interlamellar interactions pose challenges for practical membrane applications. Herein, we demonstrate a facile approach to fabricating 2D MMT membranes with alkanediamines as cross-linkers. The incorporation of diamine molecules of different lengths enables controllable interlayer spacing and strengthens interlamellar connections, leading to tunable ion transport properties and boosted membrane stability in aqueous environments.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Membrane Separation Technologies · Membrane-based Ion Separation Techniques · Fuel Cells and Related Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
Advanced Materials for Energy-Water Systems Energy Frontier Research Center, Argonne National Laboratory, Lemont, Illinois 60439, United States
Pritzker School of Molecular Engineering, University of Chicago, Chicago, Illinois 60637, United States
Applied Materials Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
Chemistry Department, University of Chicago, Chicago, Illinois 60637, United States
Center for Nanoscale Materials, Argonne National Laboratory, Lemont, Illinois 60439, United States
Funding
Energy Frontier Research Centers
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