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Author Xing, Ling-Bao ♦ Hou, Shu-Fen ♦ Zhou, Jin ♦ Zhang, Jing-Li ♦ Si, Weijiang ♦ Dong, Yunhui ♦ Zhuo, Shuping
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY ♦ ADSORPTION ♦ AMMONIA ♦ CADMIUM IONS ♦ CAPACITANCE ♦ CAPACITIVE ENERGY STORAGE EQUIPMENT ♦ CARBON OXIDES ♦ COPPER IONS ♦ DOPED MATERIALS ♦ ELECTROCHEMISTRY ♦ GRAPHENE ♦ LEAD IONS ♦ MELAMINE ♦ NITROGEN ♦ ORGANIC SOLVENTS ♦ POROUS MATERIALS ♦ THREE-DIMENSIONAL LATTICES
Abstract In present work, we demonstrate an efficient and facile strategy to fabricate three-dimensional (3D) nitrogen-doped graphene aerogels (NGAs) based on melamine, which serves as reducing and functionalizing agent of graphene oxide (GO) in an aqueous medium with ammonia. Benefiting from well-defined and cross-linked 3D porous network architectures, the supercapacitor based on the NGAs exhibited a high specific capacitance of 170.5 F g{sup −1} at 0.2 A g{sup −1}, and this capacitance also showed good electrochemical stability and a high degree of reversibility in the repetitive charge/discharge cycling test. More interestingly, the prepared NGAs further exhibited high adsorption capacities and high recycling performance toward several metal ions such as Pb{sup 2+}, Cu{sup 2+} and Cd{sup 2+}. Moreover, the hydrophobic carbonized nitrogen-doped graphene aerogels (CNGAs) showed outstanding adsorption and recycling performance for the removal of various oils and organic solvents. - Graphical abstract: Three-dimensional nitrogen-doped graphene aerogels were prepared by using melamine as reducing and functionalizing agent in an aqueous medium with ammonia, which showed multifunctional applications in supercapacitors and adsorption. - Highlights: • Three-dimensional nitrogen-doped graphene aerogels (NGAs) were prepared. • Melamine was used as reducing and functionalizing agent. • NGAs exhibited relatively good electrochemical properties in supercapacitor. • NGAs exhibited high adsorption performance toward several metal ions. • CNGAs showed outstanding adsorption capacities for various oils and solvents.
ISSN 00224596
Educational Use Research
Learning Resource Type Article
Publisher Date 2015-10-15
Publisher Place United States
Journal Journal of Solid State Chemistry
Volume Number 230


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