▎ 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, Poly[2-(methacryloyloxy)-ethyl] trimethylammonium tetrafluoroborate (P[MATMA][BF4]) was used to functionalize graphene oxide (GO). The hybrid in which P[MATMA][BF4] 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 P[MATMA][BF4] on GO. N-2 adsorption measurements indicated that P[MATMA][BF4] also greatly increased the specific surface area of GO. Due to the higher specific surface area and the CO2 affinity of P[MATMA][BF4], the GO-P[MATMA]-[BF4] hybrid exhibited a much higher CO2 adsorption capacity compared with GO, GO-NH2, and P[MATMA][BF4]. Their study showed that the combinations of poly(ionic liquid) s and GO could be promising CO2 absorbents. (C) 2016 Wiley Periodicals, Inc.