A diamino-functionalized silsesquioxane pillared graphene oxide for CO2capture

Eleni Thomou, Viktoria Sakavitsi, Giasemi K. Angeli, Konstantinos Spyrou, Konstantinos G. Froudas, Evmorfia K. Diamanti, George E. Romanos, Georgios N. Karanikolos, Pantelis N. Trikalitis, Dimitrios Gournis, Petra Rudolf

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

In the race for viable solutions that could slow down carbon emissions and help in meeting the climate change targets a lot of effort is being made towards the development of suitable CO2adsorbents with high surface area, tunable pore size and surface functionalities that could enhance selective adsorption. Here, we explored the use of silsesquioxane pillared graphene oxide for CO2capture; we modified silsesquioxane loading and processing parameters in order to obtain pillared structures with nanopores of the tailored size and surface properties to maximize the CO2sorption capacity. Powder X-ray diffraction, XPS and FTIR spectroscopies, thermal analysis (DTA/TGA), surface area measurements and CO2adsorption measurements were employed to characterize the materials and evaluate their performance. Through this optimisation process, materials with good CO2storage capacities of up to 1.7/1.5 mmol g-1at 273 K/298 K in atmospheric pressure, were achieved.

Original languageBritish English
Pages (from-to)13743-13750
Number of pages8
JournalRSC Advances
Volume11
Issue number23
DOIs
StatePublished - 13 Apr 2021

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