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. 2017 Jan 24;7:41253. doi: 10.1038/srep41253

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Copyright © 2017, The Author(s)

This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

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Schematic images showing the enhanced photocatalytic efficiency arising from the intermediate Au-loading for the TiO₂ nanoforests under the illumination of (a,c,e) UV and (b,d,f) visible light: (a,b) Branched-NW; (c,d) Branched-NW-Au; (e,f) Branched-Au-NW. For simplicity, the degradation route via photogenerated holes h⁺ and hydroxyl radicals OH• is not shown.