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. 2020 Sep 3;12(9):2009. doi: 10.3390/polym12092009

Figure 1.

Figure 1

SEM images of (a) bare polyacrylonitrile (PAN), (bg) cGO–PAN composite nanofiber membranes as a function of cGO content, and (h) cetyltrimethylammonium chloride (CTAC)-modified graphene oxide (cGO).