Journal
ADVANCED FUNCTIONAL MATERIALS
Volume 23, Issue 18, Pages 2322-2328Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.201202764
Keywords
mesoporous materials; synthesis; self-assembly; N-doping; supercapacitors
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Funding
- NSF of China [20890123, 20821140537, 21073040]
- State Key 973 Program of the PRC [2012CB224805]
- Shanghai Leading Academic Discipline Project [B108]
- Science & Technology Commission of Shanghai Municipality [08DZ2270500]
- Innovation Program of Shanghai Municipal Education Commission [13ZZ004]
- Shanghai Rising Star Project of STCSM [12QH1400300]
- Key Subjects Innovative Talents Training Program of Fudan University
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A controllable one-pot method to synthesize N-doped ordered mesoporous carbons (NMC) with a high N content by using dicyandiamide as a nitrogen source via an evaporation-induced self-assembly process is reported. In this synthesis, resol molecules can bridge the Pluronic F127 template and dicyandiamide via hydrogen bonding and electrostatic interactions. During thermosetting at 100 degrees C for formation of rigid phenolic resin and subsequent pyrolysis at 600 degrees C for carbonization, dicyandiamide provides closed N species while resol can form a stable framework, thus ensuring the successful synthesis of ordered N-doped mesoporous carbon. The obtained N-doped ordered mesoporous carbons possess tunable mesostructures (p6m and Im$ \bar 3 $m symmetry) and pore size (3.117.6 nm), high surface area (494586 m2 g1), and high N content (up to 13.1 wt%). Ascribed to the unique feature of large surface area and high N contents, NMC materials show high CO2 capture of 2.83.2 mmol g1 at 298 K and 1.0 bar, and exhibit good performance as the supercapacitor electrode with specific capacitances of 262 F g1 (in 1 M H2SO4) and 227 F g1 (in 6 M KOH) at a current density of 0.2 A g1.
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