For example, C-1000 sample fouled with ethanol was burned for recycle use, and no structural
damage was found on C-1000 (the inset in Fig. 10 and Movie S5). After five absorption-combustion cycles, the standard deviation of absorption capacity maintained almost
5.5 wt% for all organic liquids, and less than 1 wt% of residual
weight remained in C-1000 sample after each cycle, indicating
a relatively stable recyclable performance of as-made carbon
monolith. The slightly change of the absorption capacity for
each cycle may be ascribed to the residual weight of organic
liquid remained in C-1000 sample during incomplete combustion
process. The results clearly suggest the excellent recyclability
of the carbon monolith when used as a sorbent for oil–
water separation. Table S1 shows the comparison of macro/
mesoporous carbon monolith with several typical carbonbased
sorbents reported before. Although the absorption
capacity of the resultant macro/mesoporous carbon monolith
is still lower than those of graphene sponge, carbon