Functional Gels Based on Chemically Modified Graphenes

Chemically modified graphene (CMG) materials have been extensively studied because of their unique structures, excellent properties, and potential applications in energy storage and conversion, catalysis, and environment remediation. However, the unique two‐dimensional structure and amphiphilicity m...

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Bibliographic Details
Published in:Advanced materials (Weinheim) 2014-06, Vol.26 (24), p.3992-4012
Main Authors: Li, Chun, Shi, Gaoquan
Format: Article
Language:English
Subjects:
Accessibility
chemically modified graphenes
Crystallization - methods
energy storage and conversion
gelation
Gels
Gels - chemical synthesis
Graphene
Graphite - chemistry
Microstructure
Nanoparticles - chemistry
Nanoparticles - ultrastructure
Particle Size
Remediation
Self assembly
Specific surface
Three dimensional
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Summary:Chemically modified graphene (CMG) materials have been extensively studied because of their unique structures, excellent properties, and potential applications in energy storage and conversion, catalysis, and environment remediation. However, the unique two‐dimensional structure and amphiphilicity make CMG sheets easily restack into irregular aggregates, which greatly reduces their accessible surface area, and thereby deteriorates their performance in practical applications. To exploit their inherent properties fully, CMGs usually have to be fabricated or assembled into functional gels with desired three‐dimensional (3D) interconnected porous microstructures. In this review, we summarize the recent achievements in the synthesis of CMG‐based functional gels, including hydrogels, organogels, aerogels, and their composites. The mechanisms of gel formation and the applications of these functional gels will also be discussed. Self‐assembly of chemically modified graphenes (CMGs) can produce functional gels with three‐dimensional (3D) interconnected porous microstructures. The 3D microstructures provide CMG gels with large accessible specific surface areas and improved properties. In this review paper, the methodologies for synthesizing CMG gels and their composites are summarized. The mechanisms of CMG gelation and the applications of CMG gel are also highlighted.
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.201306104