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. 2016 Oct 18;16(10):1720. doi: 10.3390/s16101720

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© 2016 by the authors; licensee MDPI, Basel, Switzerland.

This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC-BY) license (http://creativecommons.org/licenses/by/4.0/).

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Characterization of carbon quantum dots loaded with copper oxide nanoparticles (CQDs/Cu₂O NPs): (A) X-ray powder diffraction (XRD) pattern; (B) transmission electron microscopy (TEM) image; (C) high-resolution TEM (HRTEM) image.