Vanadium and tantalum-doped titanium oxide (TiTaV): A novel material for gas sensing

Maria Cristina Carotta*, Vincenzo Guidi, Cesare Malagù, Beatrice Vendemiati, Alex Zanni, Giuliano Martinelli, Michele Sacerdoti, Silvia Licoccia, Maria Luisa Di Vona, Enrico Traversa

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

19 Scopus citations

Abstract

A new material based on titanium dioxide modified by tantalum and vanadium has been synthesized. The prepared powders have been deposited to produce gas sensors in the form of thick films through screen-printing technology. The crystalline phase and morphology were examined by XRD and SEM analyses. The results showed that Ta addition inhibited the anatase-to-rutile phase transformation and hindered grain growth during heating, whilst vanadium did the opposite. The sensors have been tested with different gases showing good selectivity; in particular, the samples with greatest content of Ta showed good response to benzene, only slightly influenced by presence of carbon monoxide.

Original languageEnglish (US)
Pages (from-to)89-96
Number of pages8
JournalSensors and Actuators, B: Chemical
Volume108
Issue number1-2 SPEC. ISS.
DOIs
StatePublished - Jul 22 2005

Keywords

  • Environmental monitoring
  • Gas sensors
  • Semiconductor oxides
  • Thick films
  • TiO

ASJC Scopus subject areas

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

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