Sol-Gel Synthesis of Monolithic Molybdenum Oxide Aerogels and Xerogels

Abstract

Monolithic molybdenum trioxide aerogels and xerogels have been synthesized by the sol-gel method. A three-dimensional molybdenum oxide network is achieved by suppressing Mo=O bond formation through a ligand exchange process. Infrared spectroscopy is used to characterize the bond formations during gelation, aging, and drying of the gels. The as-prepared aerogels are low density (0.15-0.30 g/cc) amorphous materials with surface areas of 150- 180 sq m/g. Upon heating to 400 deg C, the amorphous solids crystallize to orthorhombic MoO3.

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Document Details

Document Type
Technical Report
Publication Date
Mar 18, 1998
Accession Number
ADA339909

Entities

People

  • Bruce Dunn
  • Winny Dong

Organizations

  • University of California, Los Angeles

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Amorphous Materials
  • Chemical Synthesis
  • Chemistry
  • Gelation
  • Heat Energy
  • Infrared Spectroscopy
  • Low Density
  • Materials
  • Materials Science
  • Measurement
  • Metals
  • Molybdenum
  • Phase Transformations
  • Physical Properties
  • Spectra
  • Spectroscopy
  • Three Dimensional

Fields of Study

  • Materials science

Readers

  • Surface Coatings Technology.
  • Thin Film Deposition Science.