title: Polyelectrolyte-induced reduction of exfoliated graphite oxide: a facile route to synthesis of soluble graphene nanosheets.
abstract: Here we report that poly(diallyldimethylammonium chloride) (PDDA) acts as both a reducing agent and a stabilizer to prepare soluble graphene nanosheets from graphite oxide. The results of transmission electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, atomic force microscopy, and Fourier transform infrared indicated that graphite oxide was successfully reduced to graphene nanosheets which exhibited single-layer structure and high dispersion in various solvents. The reaction mechanism for PDDA-induced reduction of exfoliated graphite oxide was proposed. Furthermore, PDDA facilitated the in situ growth of highly dispersed Pt nanoparticles on the surface of graphene nanosheets to form Pt/graphene nanocomposites, which exhibited excellent catalytic activity toward formic acid oxidation. This work presents a facile and environmentally friendly approach to the synthesis of graphene nanosheets and opens up a new possibility for preparing graphene and graphene-based nanomaterials for large-scale applications.
authors.affiliation: School of Chemical Engineering and Technology, Harbin Institute of Technology, Harbin 150001, China.
authors.forename: Sheng
authors.initials: S
authors.lastname: Zhang
authors.forename: Yuyan
authors.initials: Y
authors.lastname: Shao
authors.forename: Honggang
authors.initials: H
authors.lastname: Liao
authors.forename: Mark H
authors.initials: MH
authors.lastname: Engelhard
authors.forename: Geping
authors.initials: G
authors.lastname: Yin
authors.forename: Yuehe
authors.initials: Y
authors.lastname: Lin
mesh_terms: D000498:Allyl Compounds / Q000737:chemistry*; D003460:Crystallization / Q000379:methods*; D004573:Electrolytes / Q000737:chemistry; D006108:Graphite / Q000737:chemistry*; D046911:Macromolecular Substances / Q000737:chemistry; D008422:Materials Testing; D008567:Membranes, Artificial; D008968:Molecular Conformation; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D010087:Oxides / Q000737:chemistry; D010316:Particle Size; D000644:Quaternary Ammonium Compounds / Q000737:chemistry*; D013499:Surface Properties
chemical_list: D000498:Allyl Compounds; D004573:Electrolytes; D046911:Macromolecular Substances; D008567:Membranes, Artificial; D010087:Oxides; D000644:Quaternary Ammonium Compounds; D006108:Graphite; C508190:diallyldimethylammonium chloride