A diamino-functionalized silsesquioxane pillared graphene oxide for CO2 capture

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*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

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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 CO2 adsorbents 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 CO2 capture; 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 CO2 sorption capacity. Powder X-ray diffraction, XPS and FTIR spectroscopies, thermal analysis (DTA/TGA), surface area measurements and CO2 adsorption measurements were employed to characterize the materials and evaluate their performance. Through this optimisation process, materials with good CO2 storage capacities of up to 1.7/1.5 mmol g(-1) at 273 K/298 K in atmospheric pressure, were achieved.

Original languageEnglish
Pages (from-to)13743-13750
Number of pages8
JournalRSC Advances
Volume11
Issue number23
DOIs
Publication statusPublished - 23-Apr-2021

Keywords

  • GRAPHITE OXIDE
  • HYDROGEN STORAGE
  • POROUS CARBON
  • INTERCALATION
  • HYDROLYSIS
  • POLYMERS
  • NITROGEN
  • AMINES
  • CLAY

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