Acta Phys. -Chim. Sin. ›› 2011, Vol. 27 ›› Issue (03): 729-735.doi: 10.3866/PKU.WHXB20110321

• PHYSICAL CHEMISTRY OF MATERIALS • Previous Articles     Next Articles

Delicately Controlled Synthesis of Mesoporous Carbon Materials with Thin Pore Walls

WANG Yu, YU Gang, CAI Bin, ZHU Yue-Xiang, XIE You-Chang   

  1. Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
  • Received:2010-10-12 Revised:2010-12-21 Published:2011-03-03
  • Contact: ZHU Yue-Xiang E-mail:zhuyx@pku.edu.cn
  • Supported by:

    The project was supported by the National Natural Science Foundation of China (20773004) and National Key Basic Research Program of China (973) (2011CB808702).

Abstract:

Mesoporous carbon materials with a range of pore sizes were synthesized by a delicately controlled procedure using disordered γ-alumina as template and sucrose as carbon source. Under optimized conditions, the carbon materials had narrow pore size distribution, large surface area (>1000 m2·g-1), large pore volume (up to 3.82 cm3·g-1), high mesopore ratio (>99%), and thin pore walls with thickness of 1-2 graphene layers. In the present work, we employed three types of alumina, and investigated the correlation of their texture with that of the resultant carbon materials. A mechanism for the formation of the carbon materials was proposed and tested against experimental data. A carbon sample prepared by this method can approximately duplicate the pore structure of the template, if the carbon layer in the precursor carbon-covered alumina is complete and sufficiently robust. The mesopores of the carbons had two sources, one from the removal of the template particles and the other from the original pores of the template. Calculated pore volumes strongly support the proposed mechanism.

Key words: Mesoporous carbon, Thin pore wall, Controllable synthesis, Disordered template, Mechanism, Alumina

MSC2000: 

  • O646