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论文类型： 期刊论文

发表时间： 2013-03-14

发表刊物： JOURNAL OF MATERIALS CHEMISTRY A

收录刊物： SCIE、EI、Scopus

卷号： 1

期号： 10

页面范围： 3446-3453

ISSN号： 2050-7488

摘要： Functionalized graphene oxide (KGO) sheets were covalently assembled with pyrrole and reduced to form a 3D foam structure via a multistep route through the hydrolytic condensation (cross-linking), polymerization reactions and hydrothermal reduction of graphene oxide (GO). The formed graphene/polypyrrole foam and its structures were analyzed using Fourier transform infrared (FTIR) spectroscopy and Raman spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The specific surface area and the total pore volume of the samples were measured using N-2 adsorption. The graphene composite foams have a special 3D structure, with a wide range of macropores (from sub-mm to several hundred mu m) and mesopores within. Due to the intrinsic covalent bonding between graphene sheets and the special 3D structure, not only were the sorption capacities of the graphene/polypyrrole foams determined to be very high for oil (>100 g g(-1)) and solvent, but also the sorption rate was very high.