In situ EELS study of dehydration of Al(OH)3 by electron beam irradiation

Nan Jiang, John Spence

Research output: Contribution to journalArticle

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Abstract

The dehydration of Al(OH)3 by an electron beam has been investigated using the time-dependent electron energy-loss spectroscopy (EELS) technique. Based on an analysis of low-loss EELS, Al L23 and O K-edge, it is found that the processes are initially induced by the loss of H, followed by sputtering of O, which induce local structural changes. Some of the octahedrally coordinated Al transfer to tetrahedrally coordinated Al. The time-dependent O K-edge shows that the pre-edge peak in the O K-edge of Al(OH)3 is induced by the formation of unpaired O, rather than an intrinsic feature of the OH bond.

Original languageEnglish (US)
Pages (from-to)860-864
Number of pages5
JournalUltramicroscopy
Volume111
Issue number7
DOIs
Publication statusPublished - Jun 2011

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Keywords

  • Al(OH)
  • Dehydration
  • EELS

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Instrumentation
  • Electronic, Optical and Magnetic Materials

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