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. 2015 Oct 27;5:15576. doi: 10.1038/srep15576

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Copyright © 2015, Macmillan Publishers Limited

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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TEM images of flower-like NiO (A) and flower-like Ni-PTA catalyst (B). Image (C) is HRTEM image taken from the edge of flower-like NiO sheets and the corresponding SAED pattern. Image (D) is the detailed structures of flower-like Ni-PTA “petals”.