Simultaneous Activation-Exfoliation-Reassembly to Form Layered Carbon with Hierarchical Pores

摘要

Currently, the production of hierarchical 2D layered carbon is mostly limited by low yields, laborious processing, and the high tendency for reaggregation. Hence, it is still a challenge to attain stable porous carbon structures with a well-preserved layered structure and hierarchical pores. Here, we demonstrate a facile and simultaneous activation-exfoliation-reassembly technique to perform structural modification and pore tailoring of carbonaceous matrices conveniently. Various pore creations can be realized concurrently from in-plane micro-/mesopores by chemical activation, expansion of intersheet mesopores, and interconnectivity of the layered structure to form 3D macropores. Finally, a proof-of-concept demonstration of the combination of hierarchical macro-/micro-/mesoporous layered carbon structure and TiO2 nanosheets shows promising adsorption and catalytic properties.