Journal
PHYSICA B-CONDENSED MATTER
Volume 406, Issue 3, Pages 498-502Publisher
ELSEVIER
DOI: 10.1016/j.physb.2010.11.022
Keywords
Nanostructures; Graphene oxide; Reduction; Fourier transform infrared spectroscopy
Categories
Funding
- Program for New Century Excellent Talents in University [NCET-07-0626]
- Shanghai Science and Technology Committee [08160706900, 09JC1414400]
- National High Technology Research and Development Program of China [2009AA05Z419]
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In this paper, we focus on the reducibility of graphene oxide by hydrazine hydrate. The main emphasis is placed on the problem of the dosage of hydrazine hydrate and the reaction time on the reduction of chemical groups. This paper describes a system for the analysis of FT-IR. A model is developed for the FT-IR analysis using exponential decay function (Y = Y(0)e(-RX)). The height of the peaks in FT-IR spectra of the chemical groups was fitted with exponential decay function. Decay constant R is given the name of Reducibility Factor R. Emphasis is placed on the decay constant R in the fitting functions by which the reducibility of the chemical groups on graphene oxide is evaluated. It is found that R is different for different chemical groups. The sequence is R-OH > R-C=O > RC-O-C. This means that C-O-C is the most difficult one to be reduced. OH is the most easy, and C=O is between C-O-C and OH. The experimental results reveal a basis for the research of the application of graphene oxide. (C) 2010 Elsevier B.V. All rights reserved.
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