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. 2017 Apr 20;15(1 Suppl):1–6. doi: 10.5301/jabfm.5000341

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© 2017 The Authors

This article is distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 License (http://www.creativecommons.org/licenses/by-nc-nd/4.0/) which permits non-commercial use, reproduction and distribution of the work as published without adaptation or alteration, without further permission provided the original work is attributed as specified on the SAGE and Open Access page (https://us.sagepub.com/en-us/nam/open-access-at-sage).

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Fig. 4 — X-ray photoelectron spectroscopy (XPS) spectra of C1s for reduced graphene oxide (rGO) (A) and rGO/Fe₃O₄ nanoparticle (F-NPs) (B) (200 mg), and Fe2p (C) and O1s (D) for rGO/F-NPs (200 mg).