Preparation and characterization of nanosized titania sensing film

M. Ferroni*, M. C. Carotta, V. Guidi, G. Martinelli, F. Ronconi, M. Sacerdoti, Enrico Traversa

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

72 Scopus citations

Abstract

Thick films based on nanosized titania powders have been prepared and characterized. Addition of suitable dopant affected film evolution upon annealing as both anatase-rutile phase transition and grain growth are inhibited. Ta and Nb addition to the TiO2 powder proved effective for stabilization of the nanophase, as the average grain size was reduced from 110 to 35 and 45nm, respectively. Electrical measurements indicated selectivity enhancement towards CO and required film preparation to stabilize the film's grain size below 50nm.

Original languageEnglish (US)
Pages (from-to)163-166
Number of pages4
JournalSensors and Actuators, B: Chemical
Volume77
Issue number1-2
DOIs
StatePublished - Jun 15 2001

Keywords

  • Differential thermal analysis
  • Electron microscopy
  • Gas sensor
  • Thick film
  • TiO

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry

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