Fig. 6: Ion rejection mechanism and practical performance of GAH.
From: Multifunctional solar water harvester with high transport selectivity and fouling rejection capacity
a, Ion rejection mechanism of GAH based on high osmotic pressure of hyper-dense and cross-linked rGO/alginate network. b, Calculated ion rejection rate of GAH-3 in NaCl solution of different concentrations. Upper lateral axis represents calculated osmotic pressure of NaCl solution. c, Lab-simulated solar condition in one 24-h day. d, Periodic light conditions of cycle tests with alternative 12-h light exposure and 12-h dark time. Photographs show the clean surface of GAH after 12-h light exposure and 12-h dark time. e, Maintenance rate of ion rejection and water extraction rate during the 5-day test. Inset images are the appearance of GAH (2 cm × 2 cm) for each day.
