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. 2018 Jan 30;8:1894. doi: 10.1038/s41598-018-19972-0

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© The Author(s) 2018

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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Role of auxiliary light harvester in contaminant-activated photocatalysis. (a) Hypothetical mechanism of contaminant-activated visible light photocatalysis with auxiliary light harvester polyhydroxy fullerene. (b) Ground state absorption spectra for anatase (TiO₂), polyhydroxy fullerenes (PHF) on silica and anatase coating (PHF + TiO₂). (c) Pseudo first order rate coefficients for degradation of Mordant Orange dye on anatase (TiO₂) and anatase + 0.01 (w/w) PHF (TiO₂ + 0.01PHF) coatings. Dark control measures the ability of the photocatalytic coatings to degrade dye in the dark. N = 10.