Microscopic and mesoscopic structural features of an activated carbon sample, prepared from sorghum via activation by phosphoric acid

László Temleitner, László Pusztai, Manuel F. Rubio-Arroyo, Sergio Aguilar-López, Tatiana Klimova, Orest Pizio

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

An acidic chemical activation procedure has been used for preparing activated carbon with a surface area exceeding 1000 m2/g from sorghum. In order to reveal structural features, synchrotron X-ray diffraction measurements have been performed. The structure of the material has been characterized by the total scattering structure factor and the radial distribution function describing short-range arrangement of atoms at distances of the order of a few atomic diameters as well as correlations at a longer scale, of the order of nanometers. The atomic arrangement has been found to be consistent with that of amorphous graphite-like carbon. As far as the mesoscopic structure is concerned, the presence of a characteristic distance is suggested on the basis of the clear nanometer scale oscillations of the radial distribution function, which distance may be assigned as the mesopore size in the material. It is suggested that the approach devized here may later be applied routinely for other activated carbon samples, too, for characterizing atomic and nanoscale order simultaneously.

Original languageEnglish
Pages (from-to)4409-4413
Number of pages5
JournalMaterials Research Bulletin
Volume47
Issue number12
DOIs
Publication statusPublished - Dec 1 2012

Keywords

  • A. Amorphous materials
  • A. Microporous materials
  • B. Chemical synthesis
  • B. X-ray diffraction
  • D. Microstructure

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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