Room Temperature Hydrogen Sensor Based on Pt/TiO2/MWCNT Composites

  • L. De Luca
  • A. Donato
  • G. Apa
  • S. Santangelo
  • G. Faggio
  • G. Messina
  • N. Donato
  • A. Bonavita
  • G. Neri
Conference paper
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 91)

Abstract

Pt-doped TiO2/MWCNT composites have been prepared by the sol–gel route and tested in resistive devices for the low temperature monitoring of hydrogen. A morphological and microstructural investigation by SEM, TEM, XRD and micro-Raman spectroscopy of the composites was carried out. Results indicated that, regardless the nominal C/Ti molar ratio, only the anatase phase of titania is formed. Thin films of the Pt-doped composites, deposited on interdigitated ceramic substrates, showed promising hydrogen sensing at low temperatures. On the basis of the results obtained, some hypotheses on the sensing mechanisms operating on these nanostructured hybrid materials have been formulated.

Keywords

Sensor Response Hydrogen Molecule Titanium Isopropoxide Ternary Composite Resistive Device 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

References

  1. 1.
    Aroutiounian VM (2005) Hydrogen detectors. ISJAEE 23:21–31Google Scholar
  2. 2.
    Hu Y, Tsai HL, Huang CL, (2003) Effect of brookite phase on the anatase-rutile transition in titania nanoparticles. J Eur Ceram Soc 23:691–696CrossRefGoogle Scholar
  3. 3.
    Varghese OK, Gong D, Paulose M, Ong KG, Grimes CA (2003) Hydrogen sensing using titania nanotubes. Sens Actuators B 93:338–344Google Scholar
  4. 4.
    Hossein-Babaei F, Keshmiri M, Kakavand M, Troczynski T (2005) A resistive gas sensor based on undoped p-type gas sensor. Sens Actuators B 110:28–35CrossRefGoogle Scholar
  5. 5.
    Guirado-Lopez RA, Sanchez M, Rincon ME (2007) Interaction of acetone molecules with carbon-nanotube-supported TiO2 nanoparticles: possible applications as room temperature molecular sensitive coatings. J Phys Chem C 111:57–65CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media B.V. 2011

Authors and Affiliations

  • L. De Luca
    • 1
  • A. Donato
    • 1
  • G. Apa
    • 1
  • S. Santangelo
    • 1
  • G. Faggio
    • 1
  • G. Messina
    • 1
  • N. Donato
    • 2
  • A. Bonavita
    • 3
  • G. Neri
    • 3
  1. 1.Department of Mechanics and MaterialsUniversity “Mediterranea” of Reggio CalabriaReggio CalabriaItaly
  2. 2.Department of Matter Physics and Electronic EngineeringUniversity of MessinaMessinaItaly
  3. 3.Department of Industrial Chemistry and Materials EngineeringUniversity of MessinaMessinaItaly

Personalised recommendations