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Figure 2. Morphology images of (A) SPPOF-4F and (B) SPPOF-8F obtained by SEM; EDS analysis curves for (C) SPPOF-4F and (D) SPPOF-8F. SEM: Scanning electron microscopy; EDS: energy dispersive spectroscopy.
Figure 2. Morphology images of (A) SPPOF-4F and (B) SPPOF-8F obtained by SEM; EDS analysis curves for (C) SPPOF-4F and (D) SPPOF-8F. SEM: Scanning electron microscopy; EDS: energy dispersive spectroscopy.
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