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Graphene oxide functionalized by poly(ionic liquid)s for carbon dioxide capture

机译:Graphene oxide functionalized by poly(ionic liquid)s for carbon dioxide capture

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摘要

Poly(ionic liquid) s have been demonstrated as high efficient CO2 absorbents. In the current study, a kind of poly(ionic liquid) s, Poly2-(methacryloyloxy)-ethyl trimethylammonium tetrafluoroborate (PMATMABF4) was used to functionalize graphene oxide (GO). The hybrid in which PMATMABF4 was covalently bonded on GO platelets was prepared by a simple method, that is, traditional radical polymerization. The characterizations based on transmission electron microscopy, scanning electron microscope, Fourier transform infrared spectroscopy, Raman spectroscopy, X-ray diffraction, and X-ray photoelectron spectroscopy demonstrated the graft of PMATMABF4 on GO. N-2 adsorption measurements indicated that PMATMABF4 also greatly increased the specific surface area of GO. Due to the higher specific surface area and the CO2 affinity of PMATMABF4, the GO-PMATMA-BF4 hybrid exhibited a much higher CO2 adsorption capacity compared with GO, GO-NH2, and PMATMABF4. Their study showed that the combinations of poly(ionic liquid) s and GO could be promising CO2 absorbents. (C) 2016 Wiley Periodicals, Inc.

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