Fig. 5: Structure analysis of CPro-NH2 and PFOA-K+ complex and batch equilibrium adsorption experiment. | Nature Communications

Fig. 5: Structure analysis of CPro-NH2 and PFOA-K+ complex and batch equilibrium adsorption experiment.

From: Proline-based tripodal cages with guest-adaptive features for capturing hydrophilic and amphiphilic fluoride substances

Fig. 5: Structure analysis of CPro-NH2 and PFOA-K+ complex and batch equilibrium adsorption experiment.The alternative text for this image may have been generated using AI.

a Single crystals of the CPro-NH2 and PFOA-K+ complex (CCDC number: 2382261). Packed PFOA-K+ are shown in the wireframe model. The cage and PFOA- are shown in the capped stick model. Hydrated water (hydrogen atoms omitted) and K+ are shown in the spacefill model. b Batch equilibrium adsorption experiment of CPro-Cy-NH2 with PFOA. Time dependent PFOA sorption by CPro-Cy-NH2 at low ([PFOA]0 = 1 µg/L; [CPro-Cy-NH2] = 0.3 mg/mL, black broken line) and high ([PFOA]0 = 50 µg/L; [CPro-Cy-NH2] = 0.6 mg/mL, red broken line) concentration. Error bars: standard deviation of three experiments. c, Batch equilibrium adsorption experiment of CPro-Cy-NH2 with PFOA ([PFOA]0 = 50 µg/L, black broken line) in the presence of octanoic acid ([octanoic acid]0 = 50 µg/L, red broken line). Error bars: standard deviation of three experiments. d Time dependent PFOA sorption by CPro-Cy-NH2 at groundwater containing 20 ppm HA and extra1µg/L [PFOA]0 ([CPro-Cy-NH2] = 0.3 mg/mL, black broken line). Red broken line represents the removal under the condition of the water without HA. Error bars: standard deviation of three experiments. e Additional cages were synthesized for PFAS removal. The red rectangle highlights the part that was modified. f Time dependent PFOA sorption by CPro-Cy-NH2, CPro-Cy, and CAla-Cy-NH2 at concentration of ([PFOA]0 = 50 µg/L; [Cage] = 0.6 mg/mL). Error bars: standard deviation of two or three experiments.

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