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Well dispersed chitosangraphene oxide nanocomposites
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Supporting information:
Well-dispersed Chitosan/Graphene Oxide
Nanocomposites
Xiaoming Yang,1,3 Yingfeng Tu,1 Liang Li,2,3,* Songmin Shang, 3,* and Xiao-ming
Tao3
1
College of Chemistry, Chemical Engineering and Materials Sciences, Soochow
University, Suzhou 215123, China, 2 Key Laboratory for Green Chemical Process of
Ministry of Education, School of Materials Science and Engineering, Wuhan Institute
of Technology, Wuhan 430073, China, 3 Institute of Textiles and Clothing, The Hong
Kong Polytechnic University, Hong Kong, China
Address correspondence to: ;
(b) C-C
C-O
286.2eV
Intensity (a. u.)
284.6eV
280
C=O
287.8eV
O-C=O
289.1eV
(a)
284
288
292
Binding Energy (eV)
Figure S1. XPS C 1s core-level spectra of graphite (a) and GO (b).
Compared with the spectrum of graphite, that of GO indicates the presence of four types of
carbon bonds: C–C (284.6 eV), C–O (286.2 eV), C=O (287.8 eV) and O–C=O (289.1 eV), as
reported in Carbon 2009, 47, 493-499, J. Am. Chem. Soc. 2009, 131, 13490-13497, J. Phys. Chem.
B 2006, 110, 8535-8539, Chem. Commun. 2010, 46, 1112-1114. It is in agreement with the results
of XRD.
Figure S2 TEM image of thin section of composite.
Transmission electron microscopy (TEM) images of thin section of 1 wt% CS/GO film is
shown in Figure S2. The curly black lines represent the cross-sections of the GO. While GO
platelets are randomly distributed along the film thickness, they tend to align parallel to the film
surface, as reported in Chem. Mater. 2008, 20, 2066-2068, Small 2010, 6, 205-209.
