Small-angle X-ray scattering experiments and computer simulations to characterise anisotropy of activated carbons prepared from wood

András Wacha, Z. Varga, Ulla Vainio, Armin Hoell, A. Bóta

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Small-angle scattering was measured from activated carbon monoliths prepared from three different wood species (European beech, Pedunculate oak and Norwegian spruce). Substantial differences were found in the scattering images of axial and tangential slices, attributed to their characteristic phytogenic structures. The decrease in anisotropy in the nanostructured carbon matrix due to the activation process is also different among the three investigated types of wood. For quantitative characterization of the anisotropy and its decrease, the degree of alignment was calculated from the azimuthal scattering curves. A simple numeric model was constructed on the basis of direct information obtained by atomic force microscopy. Scattering patterns calculated from the model were compared with the experimental ones to explain the possible structural changes in the carbon skeleton.

Original languageEnglish
Pages (from-to)3958-3971
Number of pages14
JournalCarbon
Volume49
Issue number12
DOIs
Publication statusPublished - Oct 2011

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X ray scattering
Activated carbon
Wood
Anisotropy
Scattering
Computer simulation
Carbon
Experiments
Atomic force microscopy
Chemical activation

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

Small-angle X-ray scattering experiments and computer simulations to characterise anisotropy of activated carbons prepared from wood. / Wacha, András; Varga, Z.; Vainio, Ulla; Hoell, Armin; Bóta, A.

In: Carbon, Vol. 49, No. 12, 10.2011, p. 3958-3971.

Research output: Contribution to journalArticle

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