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. 2019 Jun 12;9:8530. doi: 10.1038/s41598-019-44961-2

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© The Author(s) 2019

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Proposed reaction modes of preparation and decolorization efficiency of the LPO modified silica NPs. Silica NPs were coupled with 3-aminopropyl triethoxysilane to produce the modified silica NPs which interact with LPO through formation of covalent (amide) bond to form the LPO modified silica NPs. The LPO modified silica NPs interact with water and/or H₂O₂ in media generating the activated O-species which consequently lead to the direct oxidation of the synthetic dyes. The oxidizing environment leads to complete decolorization and mineralization of the synthetic dyes.