Shi et al. (2023): Co-grafting of polyethyleneimine on mesocellular silica foam for highly efficient CO2 capture

Haitao Shi, Jiajia Yang, Zia Ahmad, Haijun Zhang, Jiping Chen IN: Separation and Purification Technology, 325, 124608, https://doi.org/10.1016/j.seppur.2023.124608

In this work, the authors developed a novel CO₂ capture material via co-grafting of polyethyleneimine (PEI) on mesocellular silica foam (MCF), and (3-glycidyloxypropyl)triethoxysilane (GPTES) was first used as a bridging medium. In the fabrication procedure of MCF@G-35.6 %PEI, a simple impregration of PEI in MCF modified with epoxy groups was conducted. In this procedure, the co-grafting of PEI was realized in terms of a portion of PEI (21.3 wt%) was anchored on the pore surface of MCF via the epoxy/amine reaction and the rest of PEI (14.3 wt%) could be stably attached to the pore surface of MCF via its interaction with anchored PEI.

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