title: Covalently interconnected three-dimensional graphene oxide solids.
abstract: The creation of three-dimensionally engineered nanoporous architectures via covalently interconnected nanoscale building blocks remains one of the fundamental challenges in nanotechnology. Here we report the synthesis of ordered, stacked macroscopic three-dimensional (3D) solid scaffolds of graphene oxide (GO) fabricated via chemical cross-linking of two-dimensional GO building blocks. The resulting 3D GO network solids form highly porous interconnected structures, and the controlled reduction of these structures leads to formation of 3D conductive graphene scaffolds. These 3D architectures show promise for potential applications such as gas storage; CO2 gas adsorption measurements carried out under ambient conditions show high sorption capacity, demonstrating the possibility of creating new functional carbon solids starting with two-dimensional carbon layers.
authors.affiliation: Department of Mechanical Engineering & Material Science, Rice University, Houston, Texas 77005, United States.
authors.forename: Parambath M
authors.initials: PM
authors.lastname: Sudeep
authors.forename: Tharangattu N
authors.initials: TN
authors.lastname: Narayanan
authors.forename: Aswathi
authors.initials: A
authors.lastname: Ganesan
authors.forename: Manikoth M
authors.initials: MM
authors.lastname: Shaijumon
authors.forename: Hyunseung
authors.initials: H
authors.lastname: Yang
authors.forename: Sehmus
authors.initials: S
authors.lastname: Ozden
authors.forename: Prabir K
authors.initials: PK
authors.lastname: Patra
authors.forename: Matteo
authors.initials: M
authors.lastname: Pasquali
authors.forename: Robert
authors.initials: R
authors.lastname: Vajtai
authors.forename: Sabyasachi
authors.initials: S
authors.lastname: Ganguli
authors.forename: Ajit K
authors.initials: AK
authors.lastname: Roy
authors.forename: Maliemadom R
authors.initials: MR
authors.lastname: Anantharaman
authors.forename: Pulickel M
authors.initials: PM
authors.lastname: Ajayan
mesh_terms: D000327:Adsorption; D002244:Carbon / Q000737:chemistry; D002245:Carbon Dioxide / Q000737:chemistry; D003432:Cross-Linking Reagents / Q000737:chemistry; D005740:Gases; D006108:Graphite / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D046529:Microscopy, Electron, Transmission; D049329:Nanostructures / Q000737:chemistry; D036103:Nanotechnology / Q000379:methods*; D010087:Oxides / Q000737:chemistry*; D016062:Porosity; D011312:Pressure; D017550:Spectroscopy, Fourier Transform Infrared; D013499:Surface Properties; D013696:Temperature; D013818:Thermogravimetry
chemical_list: D003432:Cross-Linking Reagents; D005740:Gases; D010087:Oxides; D002245:Carbon Dioxide; D002244:Carbon; D006108:Graphite