Issue 26, 2009

Covalent functionalization of chemically converted graphene sheets viasilane and its reinforcement

Abstract

Polydisperse, functionalized, chemically converted graphene (f-CCG) nanosheets, which can be homogeneously distributed into water, ethanol, DMF, DMSO and 3-aminopropyltriethoxysilane (APTS), were obtained via facile covalent functionalization with APTS. The resulting f-CCG nanosheets were characterized by FTIR, XPS, TGA, EDX, AFM, SEM, and TEM. Furthermore, the f-CCG nanosheets as reinforcing components were extended into silica monoliths. Compressive tests revealed that the compressive failure strength and the toughness of f-CCG-reinforced APTS monoliths at 0.1 wt% functionalized, chemically converted graphene sheets compared with the neat APTS monolith were greatly improved by 19.9% and 92%, respectively.

Graphical abstract: Covalent functionalization of chemically converted graphene sheets via silane and its reinforcement

Article information

Article type
Paper
Submitted
22 Jan 2009
Accepted
06 Apr 2009
First published
18 May 2009

J. Mater. Chem., 2009,19, 4632-4638

Covalent functionalization of chemically converted graphene sheets via silane and its reinforcement

H. Yang, F. Li, C. Shan, D. Han, Q. Zhang, L. Niu and A. Ivaska, J. Mater. Chem., 2009, 19, 4632 DOI: 10.1039/B901421G

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