Preparation of sol-gel nano-composites containing copper oxide and their gas sensing properties

A. Dutta, D. Das, M. L. Grilli, E. Di Bartolomeo*, Enrico Traversa, D. Chakravorty

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

31 Scopus citations

Abstract

Sol-gel derived composite materials were prepared with nano-sized copper particles in silica matrix. Nano-sized oxide coatings were grown on the nano-particles of copper by subjecting the composites to a controlled oxidation treatment at different temperatures. The current response of samples with oxide layers of different thickness were studied at fixed temperatures in the range 350-450°C in the presence of different concentrations of CO and NO2. The nano-composites were sensitive to both the gases. The operating temperature and the oxide thickness were found to have significant effect on the sensing properties.

Original languageEnglish (US)
Pages (from-to)1085-1089
Number of pages5
JournalJournal of Sol-Gel Science and Technology
Volume26
Issue number1-3
DOIs
StatePublished - Jan 1 2003

Keywords

  • Copper oxide
  • Gas sensor
  • Nano-composite

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Chemistry(all)
  • Biomaterials
  • Condensed Matter Physics
  • Materials Chemistry

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