Work

Reduced‐Graphene Oxide Nanofiltration Membranes Intercalated by Conjugated Polyaromatics: Towards High Monovalent Salt Rejections

Year: 2026

Type: article

Abstract: ABSTRACT Graphene oxide (GO) nanofiltration (NF) membranes have emerged as promising candidates for processing of aqueous streams, due to fast water transport characteristics and excellent chemical stability in harsh operating environments. Their practical applications under realistic high salt/solute concentration conditions are challenged by a lack of systematic approaches to control selectivity, as well as membrane swelling and mechanical stability. Here, we show that intercalation of rGO (reduced GO) membranes with polyaromatic conjugated molecules of different structural classes is an effective strategy to enhance and tune their performance. Specifically, these membranes allow entry into a “deep NF” regime with remarkably high inorganic monovalent salt rejections (NaCl, 75–85%) and near‐total divalent salt rejections (Na 2 SO 4 , ∼98%) in a large concentration range (0.01–0.1 M) while maintaining high water permeability.

Source: Advanced Science

DOI: 10.1002/advs.202523231

Authors: Muskan Sonker, Sankar Nair

Institution: Georgia Institute of Technology

Language: English

Topic: Membrane Separation Technologies

Subfield: Water Science and Technology

Field: Environmental Science

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $6,730

Funders: National Science Foundation, U.S. Department of Energy, Division of Electrical, Communications and Cyber Systems, Office of Energy Efficiency