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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 (https://creativecommons.org/licenses/by/4.0/).
Analysis using Origin software: import the data from results of ImageJ (A), delete wrong values of linked particles (B), calculate the diameter using the diameter-square equation (C), and obtain the histogram of the precise size distribution of silica nanoparticles (D–F).