Fig. 4: Demonstration of the AAS-based reactive capture with low-CO2 high-O2 conditions. | Nature Communications

Fig. 4: Demonstration of the AAS-based reactive capture with low-CO2 high-O2 conditions.

From: Reactive capture of CO2 via amino acid

Fig. 4

a pH of a 2 M K-GLY with 0.1 M KH2PO4 capture solution over time while capturing CO2 from the atmosphere (400 ppm), CO2 from a simulated flue gas (15%), and pure CO2 (100%). b FE towards CO using the post-capture solutions of the capture processes in a. c FE towards CO and H2 of a newly assembled electrolyzer while continuously operating at 50 mA cm−2 and exposing the same capture solution to 100 sccm of air for 7 days. The applied current was paused daily for a maximum of 5 min while the electrolyzer assembly was replaced with a new one. The electrolyzer was operated at ambient conditions (1 bar and 20 °C). Error bars represent the standard deviation of at least three independent measurements. Source data are provided as a Source Data file.

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