Fig. 3 | Nature Communications

Fig. 3

From: Bioinspired graphene membrane with temperature tunable channels for water gating and molecular separation

Fig. 3

Thermal- and photo-gating performances of P-GOMs. a P-GO sheets re-dispersed and aggregated upon cooling and heating of the aqueous dispersion between 25 °C and 50 °C, indicating the temperature-responsive property of P-GO. b Temperature-dependent water permeance curves of GOMs, P-GOMs and physically blending PNIPAM/GO membranes, P-GOMs show the unique negative temperature-responsive coefficient, which is opposite to the positive coefficient of GOMs and GO/PNIPAM blending membrane. Error bars, s.d. (n = 3). c Reverse stability test of the temperature-responsive water gating property of P-GOMs. d Thickness-dependent water permeance and gating ratio of P-GOMs, 1.1 μm thickness is adopted after balancing the water permeance and high gating ratio. Error bars, s.d. (n = 3). e Schematic showing the water permeance of P-GOMs decreased after irradiation of near-infrared (NIR). The bottom pictures are thermographic images of P-GOMs before and after irradiation of NIR. f The water permeance of P-GOMs decreases when switching on NIR light and returns to initial values when the NIR light is off

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