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TiO2: Cr nanopowders for hydrogen sensing

Lyson, B. and Gwizdz, P. and Czapla, A. and Lubecka, M. and Zakrzewska, K. and Biernacka, K. and Radecka, M. and Michalow-Mauke, K. and Graule, T. and Balogh, A. G. and Lauterbach, S. and Kleebe, H.-J. :
TiO2: Cr nanopowders for hydrogen sensing.
[Online-Edition: http://www.sciencedirect.com/science/article/pii/S1877705811...]
In: Procedia Engineering, 25 pp. 749-752.
[Article] , (2011)

Official URL: http://www.sciencedirect.com/science/article/pii/S1877705811...

Abstract

The aim of this research was to use nanocrystalline TiO2 and TiO2: Cr (0.1–10 at. % Cr) obtained by Flame Spray Synthesis, FSS, for hydrogen sensing. Morphological properties of nanopowders were investigated by Brunauer–Emmett–Teller, BET, adsorption isotherms, X-ray Diffraction, XRD, Scanning Electron Microscopy, SEM, and Transmission Electron Microscopy, TEM. Nanosensors were prepared in a form of circular tablets by pressing the nanopowder at the pressure of 25 MPa and heating up to 400oC. Dynamic changes in the electrical resistance ΔR/Ro upon hydrogen exposure were detected over low-to- medium concentration range of 50-3000 ppm at 200-400oC. The influence of particle size and Cr content on the sensor response was studied.

Item Type: Article
Erschienen: 2011
Creators: Lyson, B. and Gwizdz, P. and Czapla, A. and Lubecka, M. and Zakrzewska, K. and Biernacka, K. and Radecka, M. and Michalow-Mauke, K. and Graule, T. and Balogh, A. G. and Lauterbach, S. and Kleebe, H.-J.
Title: TiO2: Cr nanopowders for hydrogen sensing
Language: English
Abstract:

The aim of this research was to use nanocrystalline TiO2 and TiO2: Cr (0.1–10 at. % Cr) obtained by Flame Spray Synthesis, FSS, for hydrogen sensing. Morphological properties of nanopowders were investigated by Brunauer–Emmett–Teller, BET, adsorption isotherms, X-ray Diffraction, XRD, Scanning Electron Microscopy, SEM, and Transmission Electron Microscopy, TEM. Nanosensors were prepared in a form of circular tablets by pressing the nanopowder at the pressure of 25 MPa and heating up to 400oC. Dynamic changes in the electrical resistance ΔR/Ro upon hydrogen exposure were detected over low-to- medium concentration range of 50-3000 ppm at 200-400oC. The influence of particle size and Cr content on the sensor response was studied.

Journal or Publication Title: Procedia Engineering
Volume: 25
Uncontrolled Keywords: Cr dopant, Flame Spray Synthesis, gas sensors, hydrogen detection, TiO2 nanopowders
Divisions: 11 Department of Materials and Earth Sciences > Earth Science > Geo-Material-Science
11 Department of Materials and Earth Sciences > Material Science > Material Analytics
11 Department of Materials and Earth Sciences > Earth Science
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences
Date Deposited: 19 Jan 2012 13:16
Official URL: http://www.sciencedirect.com/science/article/pii/S1877705811...
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