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. 2019 Apr 21;10(4):268. doi: 10.3390/mi10040268

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© 2019 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 mSiO₂ NPs and Ag-mSiO₂ NPs. (A) UV-vis-NIR absorption spectrum. (B) Wide-angle XRD patterns. (C) High-resolution transmission electron microscopy (HRTEM) of mSiO₂ NPs. (D) HRTEM of Ag-mSiO₂ NPs.