Synthesis and characterization of nitrogen-functionalized graphene oxide in high-temperature and high-pressure ammonia
College
Gokongwei College of Engineering
Department/Unit
Chemical Engineering
Document Type
Article
Source Title
RSC Advances
Volume
6
Issue
115
First Page
113924
Last Page
113932
Publication Date
1-1-2016
Abstract
A novel and efficient approach to the synthesis of nitrogen-functionalized graphene oxide (GO) using aqueous ammonia, NH3 (aq.), under high-temperature and high-pressure conditions was investigated. Nitrogen groups (N-groups) were incorporated in GO in different ways; by replacing the carbon (C) atoms and reacting with the oxygenated functionalities present in GO. Reaction mechanisms were proposed, showing how N-groups were attached to GO. Functionalization was confirmed using Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), nuclear magnetic resonance (NMR) spectroscopy and elemental analysis (EA). Raman spectroscopy, X-ray diffraction spectroscopy (XRD), and scanning electron microscopy (SEM) were employed to further characterize GO modification. Functionalization was carried out to increase GO adaptability to a wide range of applications, including carbon dioxide (CO2) capture and electrochemical oxygen reduction as reported. © The Royal Society of Chemistry.
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Digitial Object Identifier (DOI)
10.1039/C6RA22885B
Recommended Citation
Baldovino, F. B., Quitain, A. T., Dugos, N. P., Roces, S. A., Koinuma, M., Yuasa, M., & Kida, T. (2016). Synthesis and characterization of nitrogen-functionalized graphene oxide in high-temperature and high-pressure ammonia. RSC Advances, 6 (115), 113924-113932. https://doi.org/10.1039/C6RA22885B
Disciplines
Chemical Engineering
Keywords
Graphene; Ammonia; Nuclear magnetic resonance
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