Affiliation:
1. Department of Chemistry and Chemical Technology University of Calabria Rende 87036 Italy
2. National Centre for Scientific Research “DEMOKRITOS” Ag. Paraskevi Attikis Athens 15310 Greece
Abstract
AbstractNowadays, moisture‐swing adsorption technology still relies on quaternary ammonium resins with limited CO2 capacity under ambient air conditions. In this work, a groundbreaking moisture‐driven sorbent is developed starting from commercial graphene flakes and using glycidyltrimethylammonium chloride for incorporation of CO2‐sensitive quaternary ammonium functional groups. Boasting an outstanding CO2 capture performance under ultra‐diluted conditions (namely, 3.24 mmol g−1 at CO2 400 ppm and 20% RH), the functionalized sorbent (fGO) features clear competitive advantages over current technologies for direct air capture. Notably, fGO demonstrated unprecedented moisture‐swing capacity, ease of regenerability, versatility, selectivity, and longevity. These distinctive features position the fGO as an advanced and promising solution, showcasing its potential to outperform existing methods for moisture‐swing direct air capture of CO2.
Reference74 articles.
1. Direct Capture of CO2 from Ambient Air
2. M. S. National Academies of Sciences Engineering D. on E. and L. Board O. S. T. Resources B. on C. Sciences Resources B. on E. S. and N. Systems B. on A. and Climate Environmental B. on E. and Environmental B. on A. S. Sequestration Eds. C. on D. a R. A. for C. D. R. and Reliable Negative Emissions Technologies and Reliable Sequestration: A Research Agenda National Academies Press Washington DC2018.
3. Carbon capture and storage (CCS): the way forward
4. Review of liquid nano-absorbents for enhanced CO2 capture