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Open AccessArticle

Composition, Structure and Morphology Evolution of Octadecylamine (ODA)–Reduced Graphene Oxide and Its Dispersion Stability under Different Reaction Conditions

1
Beijing Institute of Aeronautical Materials, Beijing 100095, China
2
Department of Materials Science and Engineering, Beihang University, Beijing 100191, China
*
Authors to whom correspondence should be addressed.
Materials 2018, 11(9), 1710; https://doi.org/10.3390/ma11091710
Received: 17 July 2018 / Revised: 14 August 2018 / Accepted: 10 September 2018 / Published: 13 September 2018
(This article belongs to the Special Issue Advanced Functional Nanomaterials and Their Applications)
Octadecylamine (ODA) can solve the aggregation problem of graphene sheets in the chemical exfoliation method. However, no attempts have been made to investigate the evolution of ODA–reduced graphene oxide (ORGO) with reaction conditions and the modification mechanism, which is the core problem to realize the controllable production and practical application of graphene. In this study, we treated graphene oxide (GO) with ODA under different reaction conditions to prepare ORGO. Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy, atomic force microscopy, Raman spectroscopy, thermogravimetric analysis (TGA), and UV–vis spectrophotometry were employed to analyze the composition, structure, morphology and characteristics of the as–prepared graphene sheets. The results showed that the reduction reaction could occur under mild conditions, but the edge grafting reaction could only be activated by a higher temperature. Moreover, the ORGO created at 80 °C for 5 h and 120 °C for 0.5 h exhibited the optimized properties, both excellent dispersing stability and high heat resisting property, since they had more edge grafting chains and a suitable reduction degree. View Full-Text
Keywords: Octadecylamine (ODA); ODA–reduced graphene oxide; dispersity; reduction Octadecylamine (ODA); ODA–reduced graphene oxide; dispersity; reduction
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MDPI and ACS Style

Bao, T.; Wang, Z.; Zhao, Y.; Wang, Y.; Yi, X. Composition, Structure and Morphology Evolution of Octadecylamine (ODA)–Reduced Graphene Oxide and Its Dispersion Stability under Different Reaction Conditions. Materials 2018, 11, 1710.

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