Nanocomposite Based on Semiconductor Oxides SnO2/WO3

Abstract

Nanocrystalline SnO2 and WO3 and nanocomposite with Sn:W ratio 1:9, 1:1, 9:1 were prepared by co-precipitation of alpha-stannic and tungstic acids. Phase composition and average crystallite size were determined from XRD data. Presence of the second component results in the reduction of the crystallites growth rate, giving rise to the enhancement of thermal stability of nano-scaled system. TGA data allowed to estimate the concentration V(sub H2O) of water adsorbed on nanocomposite effective surface. Maximal V(sub H2O) value and the highest resistance were observed for nanocomposite with Sn:W = 1:1. The temperature dependence of resistance R reveals its activation character. The current-voltage curves are interpreted in terms of electrochemical capacitor recharge.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 2001
Accession Number
ADP012225

Entities

People

  • B. A. Akimov
  • D. A. Chareev
  • L. I. Ryabova
  • M. N. Boulova
  • M. N. Rumyntseva

Organizations

  • Moscow State University

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Annealing
  • Capacitors
  • Chemistry
  • Diffraction
  • Electrical Properties
  • Electrochemical Capacitors
  • Electronic Components
  • Grain Size
  • High Temperature
  • Low Temperature
  • Materials
  • Metal Oxides
  • Microstructure
  • Nanocomposites
  • Oxides
  • Semiconductors
  • Tungsten Oxides

Fields of Study

  • Materials science

Readers

  • Analytical Mechanics
  • Surface Engineering/Surface Coating Technology.
  • Thin Film Deposition Science.

Technology Areas

  • Microelectronics