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. 2017 Aug 17;7:8670. doi: 10.1038/s41598-017-09261-7

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© The Author(s) 2017

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 orexceeds 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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Photoluminescence signal emanated from Ag NPs regenerating layer. (a) Steady-state photoluminescence emanated from the complete system during photocatalysis. (b) Steady-state fluorescence profile of betanin in water (10 ppm AcOEt) at pH = 12. (c) Kinetic trace extracted at 515 nm with streak camera time-resolved fluorescence upon excitation at 390 nm of Bts-Ag NPs_pABA_TiO₂:Ru NPs in aqueous solution.