Controlling the textural parameters of mesoporous carbon materials

A. Vinu, P. Srinivasu, M. Takahashi, T. Mori, V. V. Balasubramanian, K. Ariga

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115 Scopus citations

Abstract

The mesoporous carbon materials prepared by inorganic templating technique using mesoporous silica, SBA-15 as a template and sucrose as a carbon source, have been systematically investigated as a function of sucrose to mesoporous silica composition, with a special focus on controlling the mesoporous structure, surface morphology and the textural parameters such as specific surface area, specific pore volume and pore size distribution. All the materials have been unambiguously characterized by XRD, N2 adsorption-desorption isotherms, high-resolution transmission electron microscopy, high-resolution field emission scanning electron microscopy, and Raman spectroscopy. It has been found that the porous structure, morphology and the textural parameters of the mesoporous carbons materials, CMK-3-x where x represent the sucrose to silica weight ratio, can be easily controlled by the simple adjustment of concentration of sucrose molecules. It has also been found that the specific surface area of the mesoporous carbon materials systematically increases with decreasing the sucrose to silica weight ratio. Moreover, the specific pore volume of the materials increases from 0.57 to 1.31 cm3/g with decreasing the sucrose to silica weight ratio from 5 to 1.25 and then decreases to 1.23 cm3/g for CMK-3-0.8. HRTEM and HR-FESEM also show a highly ordered pore structure and better surface morphology for CMK-3-1.25 as compared to other materials prepared in this study. Thus, it can be concluded that the sucrose to silica weight ratio of 1.25 is the best condition to prepare well ordered mesoporous carbon materials with good textural parameters, pore structure and narrow pore size distribution.

Original languageEnglish (US)
Pages (from-to)20-26
Number of pages7
JournalMicroporous and Mesoporous Materials
Volume100
Issue number1-3
DOIs
StatePublished - Mar 23 2007
Externally publishedYes

Bibliographical note

Funding Information:
This work was partially financed by Special Coordination Funds for Promoting Science and Technology from the Ministry of Education, Culture, Sports, Science and Technology of the Japanese Government. One of the authors A.V thanks Ms. H. Gao for technical assistance.

Keywords

  • Adsorption
  • CMK-3
  • Mesoporous carbon
  • Molecular sieves
  • Surface properties

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