By Jijun Zhao, Lizhao Liu, Fen Li
This ebook supplies a finished evaluation of graphene oxides (GO) from atomic constructions and primary houses to technological functions. Atomic structural versions, digital houses, mechanical homes, optical houses, and functionalizing and compositing of cross are illustrated. furthermore, the wonderful actual and chemical homes provide cross promising purposes in digital nanodevices, chemical sensors and catalyst, power garage, and biotechnology, that are additionally provided during this booklet. accordingly, this booklet is of curiosity to researchers in physics, chemistry, fabrics technology, and nanoscience.
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Extra info for Graphene Oxide: Physics and Applications
Reprinted with permission from Ref. . 4 FT-IR FT-IR spectroscopy is recognized as an important tool to study different types of functional groups. From the FT-IR characterization, Lee et al.  found that there are four main peaks in the FT-IR spectra of GO, as described detailedly in the following. Firstly, the peak at 1,050 cm−1 arises from epoxide groups (C–O‒C). Secondly, the one centered at 1,680 cm−1 corresponds to the vibrational mode of the ketone groups (‒C=O). Another peak at 1,380 cm−1 is assigned to a C–O vibrational mode.
Copyright (2011) Elsevier Ltd. 1 Structural Modeling 39 different coverage and OH:O ratios. Then, employing the DFT calculations, these initially built structures were fully optimized. During optimization, dissociation of epoxide, formation and release of H2O molecules, breaking of carbon-rings on the basal plane, and other structural damages were observed in some of the random GO configurations, especially for those with relatively high coverage rates (R ≥ 30 %). 6a. In the ordered motifs, epoxide and hydroxyl groups distribute closely together, leading to formation of hydrogen bonds and lowering the total energy of the system, consistent with previous theoretical predictions [21–24].
In 2006, Schniepp et al.  investigated the thickness of GO using first-principles calculations. 2 Å above the carbon grid. 7 Å above the carbon grid for epoxide and hydroxyl functional groups, respectively. 8 Å. 2c). 2 The most stable configurations of GO with epoxide groups only (a), hydroxyl groups only (b), and both epoxide and hydroxyl groups (c). Carbon, oxygen, and hydrogen atoms are shown in green, blue, and violet, respectively. Reprinted with permission from Ref. . Copyright (2008) American Chemical Society.