Structure of V2O5·nH2O xerogel solved by the atomic pair distribution function technique

Valeri Petkov, Pantelis N. Trikalitis, Emil S. Bozin, Simon J.L. Billinge, Thomas Vogt, Mercouri G. Kanatzidis

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329 Citations (Scopus)

Abstract

A long-standing issue regarding the local and long-range structure of V2O5·nH2O xerogel has been successfully addressed. The full three-dimensional structure of the lamellar turbostratic V2O5·nH2O xerogel was determined by the atomic pair distribution function technique. We show that on the atomic scale the slabs of the xerogel can be described well as almost perfect pairs (i.e., bilayers) of single V2O5 layers made of square pyramidal VO5 units. These slabs are separated by water molecules and stack along the z-axis of a monoclinic unit cell (space group C2/m) with parameters a = 11.722(3) Å, b = 3.570(3) Å, c = 11.520(3) Å, and β = 88.65°. The stacking sequence shows signatures of turbostratic disorder and a structural coherence limited to 50 Å.

Original languageEnglish
Pages (from-to)10157-10162
Number of pages6
JournalJournal of the American Chemical Society
Volume124
Issue number34
DOIs
Publication statusPublished - Aug 28 2002

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ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

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