Figure 1c shows the morphology of NFC aerogels formed
by the self-assemble of abundant NFCs. The cross-linked
3D network can be identified. Moreover, the inset of
Fig. 1c confirms that the nanoscale NFCs were successfully
separated. We drew the frequency distribution histogram
of NFCs diameters (see Fig. S1 in the Supporting Information), and the plot exhibits a Gaussian-like distribution.