{"id":"doi:10.1038/s41467-023-35866-w","kind":"article","title":"Electrochemical direct air capture of CO2 using neutral red as reversible redox-active material","authors":["Hyowon Seo","T. Alan Hatton"],"author_count":2,"year":2023,"published":"2023-01-19","venue":"Nature Communications","cited_by":166,"doi":"10.1038/s41467-023-35866-w","arxiv_id":null,"nct_id":null,"source_url":"https://doi.org/10.1038/s41467-023-35866-w","archive_url":"https://space-kitty.com/papers/doi:10.1038/s41467-023-35866-w","updated":null,"pmid":"36658126","pmcid":null,"openalex_id":"W4317433478","pdf_url":"https://www.nature.com/articles/s41467-023-35866-w.pdf","abstract":"Abstract Direct air capture of carbon dioxide is a viable option for the mitigation of CO 2 emissions and their impact on global climate change. Conventional processes for carbon capture from ambient air require 230 to 800 kJ thermal per mole of CO 2 , which accounts for most of the total cost of capture. Here, we demonstrate electrochemical direct air capture using neutral red as a redox-active material in an aqueous solution enabled by the inclusion of nicotinamide as a hydrotropic solubilizing agent. The electrochemical system demonstrates a high electron utilization of 0.71 in a continuous flow cell with an estimated minimum work of 35 kJ e per mole of CO 2 from 15% CO 2 . Further exploration using ambient air (410 ppm CO 2 in the presence of 20% oxygen) as a feed gas shows electron utilization of 0.38 in a continuous flow cell to provide an estimated minimum work of 65 kJ e per mole of CO 2 .","abstract_license":"CC-BY (publisher license, via OpenAlex)","license":"cc-by","is_open_access":true,"retracted":false,"peer_reviewed":null,"categories":["Carbon Dioxide Capture Technologies"],"details":null,"provenance":"openalex","attribution":"Abstract of \"Electrochemical direct air capture of CO2 using neutral red as reversible redox-active material\" by Hyowon Seo, T. Alan Hatton, https://doi.org/10.1038/s41467-023-35866-w, used under its Creative Commons Attribution license (CC-BY); markup removed, otherwise unmodified.","topics":[{"slug":"carbon-removal","name":"Carbon Dioxide Removal","domain_slug":"energy"}],"cited_in_dossiers":[]}