Polyelectrolyte-Induced Reduction of Exfoliated Graphite Oxide: A Facile Route to Synthesis of Soluble Graphene Nanosheets
Sheng Zhang
Yuyan Shao
Honggang Liao
Mark H. Engelhard
Geping Yin
Yuehe Lin
10.1021/nn102467s.s001
https://acs.figshare.com/articles/journal_contribution/Polyelectrolyte_Induced_Reduction_of_Exfoliated_Graphite_Oxide_A_Facile_Route_to_Synthesis_of_Soluble_Graphene_Nanosheets/2680018
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 <i>in situ</i> 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.
2011-03-22 00:00:00
Pt
graphene nanosheets
graphite oxide
formic acid oxidation
Soluble Graphene NanosheetsHere
PDDA
Exfoliated Graphite Oxide
transmission electron microscopy
exfoliated graphite oxide