We firstly put the MTCS-treated NFC aerogels (ca. 0.05 g)
into a thin and lightweight nonwoven cloth bag
(6 cm 9 8 cm, 0.25–0.35 g). Then the bag was sealed and
dipped into methylbenzene (or ethyl alcohol) for 1 min.
The adsorbed methylbenzene (or ethyl alcohol) was separated
from the adsorbent by squeezing–vacuum drying (or
air drying). The adsorption–desorption process was repeated
five times. The weight of the bag was measured before
and after each period.