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. 2017 Jun 27;5:e3498. doi: 10.7717/peerj.3498

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©2017 Satapathy et al.

This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, reproduction and adaptation in any medium and for any purpose provided that it is properly attributed. For attribution, the original author(s), title, publication source (PeerJ) and either DOI or URL of the article must be cited.

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(A) XRD patterns of natural graphite and as-produced GO. (B) Micro Raman spectra of natural graphite and as-produced GO. (C) C1s peak of GO in the HRXPS spectrum. C1s peak was deconvoluted to C–C, C–O, C=O, and COOH surface functionalities at 284.4, 286, 287, and 289 eV, respectively. (D) TEM image of GO.