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