| 초록 |
Highly nitrogen-enriched mesoporous carbon nitride materials with 2-dimensional (2-D) (2D-meso-CN) and 3-dimensional (3-D) mesostructures (3D-meso-CN) were synthesized using mesoporous silica as hard template and cyanamide as precursor via incipient wetness process without using of any solvent. The mesoporous carbon nitride replicas have graphitic-like stacking of carbon nitride sheets in the mesopore walls. And N/C ratio of the mesoporous carbon nitride replicas was 1.13 after carbonization at 550 oC for 3h. 2D-meso-CN and 3D-meso-CN have 361 m2g-1 and 343 m2g-1 in BET surface area, 0.50 cm3g-1 and 0.67 cm3g-1 in pore volume, and 27.8 (for 2D-meso-CN), 24.5 and 80.3 (for 3D-meso-CN) in pore diameter, respectively. We also investigate the hydrogen adsorption capacity of the synthesized product. 3D-meso-CN has higher hydrogen adsorption capacity with the value of 0.25 wt% than pure mesoporous carbon FDU-15 (0.16 wt%) at 50 bar under room temperature (298 K). |
