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The active carbon materials (ACs) derived from fallen leaves (FLs) are prepared by the activations of mixed KOH and K2CO3. Characterizations reveal that the use of single activator KOH creates the most of micropores in three dimensional and K2CO3 produces the mesopores/macropores mostly in shallow. When combining KOH with K2CO3, the pore size of ACs is enlarged. The surface areas and hierarchical...
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