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Title: Macroporous foam of reduced graphene oxides prepared by lyophilization
Authors: Lu, Xiaomei
Wei, Ang
Fan, Qu-Li
Wang, Lianhui
Chen, Peng
Dong, Xiaochen
Huang, Wei
Keywords: DRNTU::Science::Medicine::Biomedical engineering
Issue Date: 2012
Series/Report no.: Materials research bulletin
Abstract: In this study, we demonstrate that water-soluble grafted polymer polyfluorene-grafted-poly(sulfobetainemetahcrylate) (PF-g-PSBMA) allows chemically reduced GO sheets dispersed in aqueous solution due to its ability to stably disperse hydrophobic rGO sheets. Based on the stable rGO/PF-g-PSBMA dispersion, macroporous graphene foam can be simply obtained by lyophilization process (freeze-drying). The resulting composite foam exhibits three-dimensional macroporous structure with high specific surface area and can easily re-dissolve into water. Also, the stable rGO/PF-g-PSBMA dispersion allows solution-based fabrication of thin-film graphene devices. Moreover, PF-g-PSBMA can be removed from rGO foam or film by thermal annealing, and the conductivity of rGO film can be greatly enhanced likely due to its annealing ability.
DOI: 10.1016/j.materresbull.2012.09.008
Rights: © 2012 Elsevier Ltd.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:SCBE Journal Articles

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