The corresponding author has requested retraction of this article [1] as they cannot verify the uniqueness of the images used in their paper as raised on PubPeer (https://pubpeer.com/publications/8E3D5FD11BF66A1F2131AC9B23FC49) namely;

Figure 4b is the same as Figure 4b in the article by Zhang et al [2].

Figure 3d has the same images used in Figure 3d by Wang et al [3]., figure 3b in Wang et al [4]., and figure 3d by Chen & Zhong [5].

Figure 3c has the same images used in figure 3c by Cheng & Zhong [5], figure 3c by Wang et al [3]., and figure 3c of Zhang et al [2].

Figure 2b has the same images used in figure 2b by Lin et al [6]. and figure 2b by [7].

Figure 4a has in part the same image as in figure 5a by Gao et al [8].

The article is retracted.

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