Three-dimensional assemblies of graphene prepared by a novel chemical reduction-induced self-assembly method

Handle URI:
http://hdl.handle.net/10754/562033
Title:
Three-dimensional assemblies of graphene prepared by a novel chemical reduction-induced self-assembly method
Authors:
Zhang, Lianbin ( 0000-0002-8548-1506 ) ; Chen, Guoying; Hedhili, Mohamed N. ( 0000-0002-3624-036X ) ; Zhang, Hongnan; Wang, Peng ( 0000-0003-0856-0865 )
Abstract:
In this study, three-dimensional (3D) graphene assemblies are prepared from graphene oxide (GO) by a facile in situ reduction-assembly method, using a novel, low-cost, and environment-friendly reducing medium which is a combination of oxalic acid (OA) and sodium iodide (NaI). It is demonstrated that the combination of a reducing acid, OA, and NaI is indispensable for effective reduction of GO in the current study and this unique combination (1) allows for tunable control over the volume of the thus-prepared graphene assemblies and (2) enables 3D graphene assemblies to be prepared from the GO suspension with a wide range of concentrations (0.1 to 4.5 mg mL-1). To the best of our knowledge, the GO concentration of 0.1 mg mL-1 is the lowest GO concentration ever reported for preparation of 3D graphene assemblies. The thus-prepared 3D graphene assemblies exhibit low density, highly porous structures, and electrically conducting properties. As a proof of concept, we show that by infiltrating a responsive polymer of polydimethylsiloxane (PDMS) into the as-resulted 3D conducting network of graphene, a conducting composite is obtained, which can be used as a sensing device for differentiating organic solvents with different polarity. © 2012 The Royal Society of Chemistry.
KAUST Department:
Biological and Environmental Sciences and Engineering (BESE) Division; Water Desalination and Reuse Research Center (WDRC); Advanced Nanofabrication, Imaging and Characterization Core Lab; Environmental Science and Engineering Program; Core Labs; Water Desalination & Reuse Research Cntr; Environmental Nanotechnology Lab
Publisher:
Royal Society of Chemistry (RSC)
Journal:
Nanoscale
Issue Date:
2012
DOI:
10.1039/c2nr32157b
Type:
Article
ISSN:
20403364
Appears in Collections:
Articles; Environmental Science and Engineering Program; Advanced Nanofabrication, Imaging and Characterization Core Lab; Water Desalination and Reuse Research Center (WDRC); Biological and Environmental Sciences and Engineering (BESE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorZhang, Lianbinen
dc.contributor.authorChen, Guoyingen
dc.contributor.authorHedhili, Mohamed N.en
dc.contributor.authorZhang, Hongnanen
dc.contributor.authorWang, Pengen
dc.date.accessioned2015-08-03T09:43:15Zen
dc.date.available2015-08-03T09:43:15Zen
dc.date.issued2012en
dc.identifier.issn20403364en
dc.identifier.doi10.1039/c2nr32157ben
dc.identifier.urihttp://hdl.handle.net/10754/562033en
dc.description.abstractIn this study, three-dimensional (3D) graphene assemblies are prepared from graphene oxide (GO) by a facile in situ reduction-assembly method, using a novel, low-cost, and environment-friendly reducing medium which is a combination of oxalic acid (OA) and sodium iodide (NaI). It is demonstrated that the combination of a reducing acid, OA, and NaI is indispensable for effective reduction of GO in the current study and this unique combination (1) allows for tunable control over the volume of the thus-prepared graphene assemblies and (2) enables 3D graphene assemblies to be prepared from the GO suspension with a wide range of concentrations (0.1 to 4.5 mg mL-1). To the best of our knowledge, the GO concentration of 0.1 mg mL-1 is the lowest GO concentration ever reported for preparation of 3D graphene assemblies. The thus-prepared 3D graphene assemblies exhibit low density, highly porous structures, and electrically conducting properties. As a proof of concept, we show that by infiltrating a responsive polymer of polydimethylsiloxane (PDMS) into the as-resulted 3D conducting network of graphene, a conducting composite is obtained, which can be used as a sensing device for differentiating organic solvents with different polarity. © 2012 The Royal Society of Chemistry.en
dc.publisherRoyal Society of Chemistry (RSC)en
dc.titleThree-dimensional assemblies of graphene prepared by a novel chemical reduction-induced self-assembly methoden
dc.typeArticleen
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Divisionen
dc.contributor.departmentWater Desalination and Reuse Research Center (WDRC)en
dc.contributor.departmentAdvanced Nanofabrication, Imaging and Characterization Core Laben
dc.contributor.departmentEnvironmental Science and Engineering Programen
dc.contributor.departmentCore Labsen
dc.contributor.departmentWater Desalination & Reuse Research Cntren
dc.contributor.departmentEnvironmental Nanotechnology Laben
dc.identifier.journalNanoscaleen
dc.contributor.institutionDepartment of Chemistry, Fudan University, Shanghai 200433, Chinaen
kaust.authorZhang, Lianbinen
kaust.authorHedhili, Mohamed N.en
kaust.authorZhang, Hongnanen
kaust.authorWang, Pengen
kaust.authorChen, Guoyingen
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