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@article{WOS:001531987900002,
title = {Tunable anion transport and the chemical transistor effect in
functionalized graphene oxide membranes},
author = {Siyu Chen and Gladys Shi Xuan Tan and Artemii Ivanov and Timofey M Savilov and Kou Yang and Xuanye Leng and Musen Chen and Kostya S Novoselov and Daria V Andreeva},
doi = {10.1038/s41699-025-00585-x},
times_cited = {6},
year = {2025},
date = {2025-07-01},
journal = {NPJ 2D MATERIALS AND APPLICATIONS},
volume = {9},
number = {1},
publisher = {NATURE PORTFOLIO},
address = {HEIDELBERGER PLATZ 3, BERLIN, 14197, GERMANY},
abstract = {Selective anion transport is essential for energy conversion, water
purification, and electrochemical systems, yet achieving precise ion
selectivity in membranes remains a challenge. Here, we present an
amino-functionalized graphene oxide (am-GO) membrane that enables
tunable anion transport through nanochannels. Using a combined
experimental and computational approach, we consider the three stages of
ionic transport-absorption, diffusion, and desorption-to reveal that Cl-
selectively diffuses through nanochannels, while NO3-, SO42-, and PO43-
are excluded. In ionic mixtures, the chemical transistor effect emerges,
where Cl- pulls water from NO3- hydration shell, enhancing its mobility,
while SO42- and PO43- remain excluded due to size constraints. This
mechanism enables precisely regulated Cl- and NO3- transport, with
ultrahigh rejection rates of 99.99% for SO42- and PO43-, even in
complex ionic environments. The am-GO exhibits stability and
anion-hopping mechanisms, making it a versatile platform for anion
exchange membranes in electrolysis, energy storage, and environmental
applications.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}