This article (ref. [1]) has been retracted at the request of the authors, as Figure 1A is similar with Figure 1B of the article published by Sun et al. in 2015 [2]. Moreover, a section of Figure 1B in (ref. [1]) is similar with a section of Figure 1B of the article published by Sun et al. in 2015 [3].
The decision to retract has been taken in agreement with the authors and approved by the Editor-in-Chief.
The Nanomaterials Editorial Office and authors apologize to the readers of Nanomaterials for any inconvenience caused. To ensure the addition of only high-quality scientific work to the field of scholarly publication, this paper (ref. [1]) is retracted and shall be marked accordingly. MDPI is a member of the Committee on Publication Ethics (COPE) and takes the responsibility to enforce strict ethical policies and standards very seriously.
Conflicts of Interest
The authors declare no conflicts of interest.
References
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