Condensed Matter National Laboratory

Environmental Fate of 2D Materials in Aquatic Ecosystems


(Internal): Seyed Mohammad Reza Taheri
(External): Ali Sanjari (Jetco Co.), Babak Zare (IUST), Hesam Nikfazan (Graphenex)
Mohsen Moazzami Gudarzi (University of Manchester), Alexandara Satalov (Leibniz University)

Funded by

Swiss National Science Foundation (P400P2_186747 & 174952), Iran Science Elites Federation (11/66332) and international affairs and technological exchange centre of vice presidency for science and technology (99/200/4419)

Published Papers

1- Anomalously low electrostatic bending stiffness of graphene oxide 2D membranes regulates their environmental fate in aquatic ecosystems, Journal of Materials Chemistry A, 2022

Summary in English and Photo

Herein, we demonstrated that that the role of pervasive double-layer forces on folding and rigidity of GO, as a model thin membrane, is inconsequential. The significance of this finding is that the flat geometry of GO sheets retains its original configuration in a wide range of aquatic environments. While the origin of superflexibiliy of GO and the high tendency of GO to stay flat remains an open question, our findings bring about serious consequences due to the environmental impact of these atomically thin membranes amid their preference to keep their 2D almost flat conformation intact. This, in turn, calls for performing proper safety checks before the final roll-out of true 2D materials for real-world applications. Given that the morphology and conformation of 2D thin membranes determines the fate and transport of these materials in aquatic environment, our results point out to a possible great threat associated with the use of these materials in different applications that needs to be taken into account for regulatory purposes.



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