Direct air capture of CO2 for solar fuel production in flow

Kar, Sayan; Kim, Dong‐Seok; Annuar, Ariffin Bin Mohamad; Sarma, Bidyut Bikash; Stanton, Michael; Lam, Erwin; Bhattacharjee, Subhajit; Karak, Suvendu; Greer, Heather F.; Reisner, Erwin

doi:10.1038/s41560-025-01714-y

articleNature EnergyFeb 13, 2025HYBRID OA

Direct air capture of CO2 for solar fuel production in flow

SKSayan Kar DKDong‐Seok Kim ABAriffin Bin Mohamad Annuar BBBidyut Bikash Sarma MSMichael Stanton

University of Cambridge

PubMed

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Abstract

Abstract Direct air capture is an emerging technology to decrease atmospheric CO 2 levels, but it is currently costly and the long-term consequences of CO 2 storage are uncertain. An alternative approach is to utilize atmospheric CO 2 on-site to produce value-added renewable fuels, but current CO 2 utilization technologies predominantly require a concentrated CO 2 feed or high temperature. Here we report a gas-phase dual-bed direct air carbon capture and utilization flow reactor that produces syngas (CO + H 2 ) through on-site utilization of air-captured CO 2 using light without requiring high temperature or pressure. The reactor consists of a bed of solid silica-amine adsorbent to capture aerobic CO 2 and…

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Topics & keywords

Topics

Keywords

Syngas
Materials science
Chemical engineering
Waste management
Catalysis
Environmental science
Process engineering
Chemistry

UN Sustainable Development Goals

Affordable and clean energy

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