Title:
Role of Nanosheets and Nanofibers for CO2 Capture in Cementitious Systems
Author(s):
Surendra Shah
Publication:
Web Session
Volume:
ws_S23_SurendraShah.pdf
Issue:
Appears on pages(s):
Keywords:
DOI:
Date:
4/2/2023
Abstract:
The capture and utilization of carbon dioxide (CO2) is emerging as a potential research area, which offers the advantage of mitigating climate change and generating economically viable products. For CO2 sequestration in cement-based composites, a number of nanomaterials are being investigated, including graphene, graphene oxide, nano-titania, carbon nanotubes, and graphene nanoplates. Graphene-based nanomaterials have been extensively employed to modify cement matrix due to their exceptional surface area, high strength, and modulus. The enhanced adsorption capacity and affordability of these materials are making them a viable alternative for the removal of ambient CO2. In our study, we found that the CO2 absorption capability of cement composites was increased by 30% when very modest amounts of graphene oxide nanosheets (about 0.05 to 0.1%) were added. GO-reinforced concrete offers the ability to store CO2 while maintaining structural integrity in comparison to conventional cement-based materials.