Eco-friendly one-pot synthesis of highly dispersible functionalized graphene nanosheets with free amino groups

An eco-friendly, facile and scalable hydrothermal approach, in which the reduction and functionalization of graphite oxide (GO) are completed in one pot, is proposed for the synthesis of monolayer 3-aminopropyltriethoxysilane (APTES)-functionalized graphenes (A-FGs). Atomic force microscopy, transmi...

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Bibliographic Details
Published in:Nanotechnology 2013-02, Vol.24 (4), p.045609-045609
Main Authors: Liu, Zhiting, Duan, Xuezhi, Qian, Gang, Zhou, Xinggui, Yuan, Weikang
Format: Article
Language:English
Subjects:
Amines - chemistry
Chemical synthesis methods
Colloids - chemistry
Condensed matter: structure, mechanical and thermal properties
Cross-disciplinary physics: materials science
rheology
Crystallization - methods
Exact sciences and technology
Fullerenes and related materials
diamonds, graphite
Graphene
Graphite - chemistry
Low-dimensional structures (superlattices, quantum well structures, multilayers): structure, and nonelectronic properties
Macromolecular Substances - chemistry
Materials science
Materials Testing
Membranes, Artificial
Methods of nanofabrication
Molecular Conformation
Nanomaterials
Nanostructure
Nanostructures - chemistry
Nanostructures - ultrastructure
Nanotechnology
Particle Size
Physics
Reduction
Specific materials
Surface Properties
Surfaces and interfaces
thin films and whiskers (structure and nonelectronic properties)
Synthesis
Thermogravimetric analysis
X-rays
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Summary:An eco-friendly, facile and scalable hydrothermal approach, in which the reduction and functionalization of graphite oxide (GO) are completed in one pot, is proposed for the synthesis of monolayer 3-aminopropyltriethoxysilane (APTES)-functionalized graphenes (A-FGs). Atomic force microscopy, transmission electron microscopy and x-ray diffraction analyses indicate that the as-synthesized A-FGs consist of only one or a few layered graphenes, while x-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy and thermogravimetric analysis reveal that APTES is bonded to graphene by the dehydration reaction between the Si-OH (produced by APTES hydration) and the -OH on the GO surface. As a result, free amino groups are left on the A-FGs. Moreover, A-FGs are highly dispersible in dimethylsulfoxide, APTES and ethylene glycol, and their solubilities are up to 0.89, 4.03 and 0.90 mg ml−1, respectively.
ISSN:0957-4484
1361-6528
DOI:10.1088/0957-4484/24/4/045609